The Nature of Procrastination Running head: PROCRASTINATION The Nature of Procrastination Piers Steel University of Calgary Piers Steel, Human Resources and Organizational Development, University of Calgary. Correspondence concerning this article should be addressed to Piers Steel, 444 Skurfield Hall, 2500 University Drive N.W., University of Calgary, Calgary, Alberta, Canada T2N 1N4, or Piers.Steel@Haskayne.UCalgary.ca, or Fax: 403-282-0095 I would like to sincerely thank Henri Schouwenburg for his enthusiasm in this endeavor as well as his willingness to share and translate his considerable research on procrastination. 1 The Nature of Procrastination 2 Abstract Procrastination is prevalent and pernicious but not entirely understood, motivating this empirical and theoretical review. Though several definitions exist, integrating them indicates procrastination is an intended action that is voluntarily delayed, despite expectations that this delay will fail to maximize one’s utility. A meta-analysis of procrastination’s causes and effects reveals several consistent findings regarding task effects, individual differences, and procrastination’s intrinsic aspects. To explain these findings, expectancy and hyperbolic discounting theory are summarized and evaluated, revealing that only a combination of these theories is consistent with procrastination’s strongest and most reliable findings. Continued research into the prediction and treatment of procrastination should not be delayed, especially since its prevalence appears to be growing. Keywords: Procrastination, picoeconomics, irrational delay, meta-analysis The Nature of Procrastination 3 THE NATURE OF PROCRASTINATION Procrastination is clearly prevalent. Though virtually all of us have at least dallied with dallying, some have made it a way of life. Estimates indicate that 95% of college students engage in procrastination (Ellis & Knaus, 1977), approximately 75% consider themselves procrastinators (Potts, 1987), and almost one-half do it consistently and problematically (Day, Mensink, & O’Sullivan, 2000; Haycock, 1993; Micek, 1982; Onwuegbuzie, 2000a; Solomon & Rothblum, 1984). Even for the average student, procrastination is considerable, representing over one third of their reported daily activities (Pychyl, Lee, Thibodeau, & Blunt, 2000). Furthermore, these percentages appear to be on the rise (Kachgal, Hansen, & Nutter, 2001). Aside from being endemic during college, procrastination is also widespread in the general population, chronically affecting some 15-20% of adults (Harriott & Ferrari, 1996). Procrastination also appears to be a troubling phenomenon. People most strongly characterize it as being bad, harmful, and foolish (Briody, 1979). Justifying this viewpoint, several studies have linked it to individual performance, with the procrastinator performing more poorly overall (Beswick, Rothblum, & Mann, 1988; Steel, Brothen, & Wambach, 2001; Wesley, 1994), and to individual well-being, with the procrastinator being more miserable in the longterm (Knaus, 1973; Lay & Schouwenburg, 1993; Tice & Baumeister, 1997). At larger levels of analysis, procrastination has been linked to several organizational and societal issues. Gersick (1988) describes how teams consistently delay the bulk of their work until deadlines approach. The economists Akerlof (1991) and O’Donoghue and Rabin (1999) consider the relative lack of retirement savings behavior as a form of procrastination, where many start preparing for their later years far too late. In the political arena, procrastination has been used to describe Presidential decisions (Farnham, 1997; Kegley, 1989) and the banking practices of nations The Nature of Procrastination 4 (Holland, 2001), both where important decisions are disastrously delayed. Similarly, The Economist discusses how procrastination shapes events internationally (e.g., “The Uruguay round’s next deadline,” 1992; “The politics of procrastination,” 1999), such as France’s decision to delay giving its Pacific territory of New Caledonia independence. Unfortunately for such an extensive affliction, little is decisively known about its causes or its effects. The nature of procrastination has proven elusive with conflicting theories and findings. To counter this disarray, this paper endeavors to review and synthesize the conceptual and empirical work completed thus far. To begin with, the definition and history of procrastination is considered. From there, this exploration of procrastination seeks to summarize findings meta-analytically as well as to incorporate exploratory and experimental work. Using these meta-analytic findings, two competing theories of motivation often used to explain procrastination are evaluated. Finally, several promising topics for future research efforts are identified. What is Procrastination? Like many common-language terms drafted into scientific study, definitions for procrastination tend to be almost as plentiful as there are people researching this topic (see Ferrari, Johnson, & McCown, 1995). Initially, such definitional variation may seem to obscure procrastination’s nature, but it may also serve to partially illuminate it. Different attempts to refine our understanding can be complementary rather than contradictory. In addition, any common theme likely reveals a core or essential element. It is evident that all conceptualizations of procrastination recognize that there must be a postponing, delaying, or putting off a task or a decision, in keeping with its Latin origins of “pro,” meaning “forward, forth, or in favor of,” and “crastinus,” meaning “of tomorrow” (Klein, 1971). The Nature of Procrastination 5 Building on this base, we procrastinate when we delay beginning or completing an intended course of action (Beswick & Mann, 1994; Ferrari, 1993a; Lay & Schouwenburg, 1993; Lay & Silverman, 1996; Milgram, 1991; Sabini & Silver, 1982). This is a useful distinction as there are thousands of potential tasks that we could be doing at any time, and it becomes cumbersome to think we are putting them all off. It also separates procrastination from simple decision avoidance (Anderson, 2003), where people’s original intention is to delay. Also, procrastination is most often considered to be the irrational delay of behavior (Akerlof, 1991; Briody, 1980; Burka & Yuen, 1983; Ellis & Knaus, 1977; Lay & Schouwenburg, 1993; Sabini & Silver, 1982; Sanders, 1994), and this reflects the dictionary definition: “defer action, especially without good reason” (OED, 1996). Being irrational entails choosing a course of action despite expecting that it will not maximize your utilities, that is your interests, preferences, or goals of both a material (e.g., money) and a psychological (e.g., happiness) nature (Read, 2001). Combining these elements suggest that procrastination is: “To voluntarily delay an intended course of action despite expecting to be worse-off for the delay.” Historical references indicate that the prevalence and problems of procrastination have been reasonably constant over the ages.1 Starting with the Industrial Revolution, Samuel Johnson (1751) wrote about procrastination indicating, “it is one of the general weaknesses, which, in spite of the instruction of moralists, and the remonstrances of reason, prevail to a greater or less degree in every mind.” A contemporary of Johnson, Phillip Stanhope (1749), the Earl of Chesterfield, stated, “no idleness, no laziness, no procrastination; never put off till tomorrow what you can do today.” 1 Interested readers might also seek a book by Ringenback (1971) on the history of procrastination, cited by Knaus (1979; 2000). This search is not recommended. Aitken’s (1982) investigation reveals that the work was never actually written. Her correspondence with Paul Ringenbach and the publisher reveals it was actually an elaborate The Nature of Procrastination 6 Clearly preceding the Industrial Revolution was a sermon written by a Reverend Walker in the 17th century (Pychyl, 1999). There he makes it quite clear that procrastination is extremely sinful, that he and other ministers have rallied their congregations against it repeatedly, and that there are other texts available that speak similarly. This sermon can be further predated by John Lyly, an English novelist patronized by Queen Elizabeth I. Lyly made himself famous through a 1579 work Eupheus, a book that relies highly on proverbs for content. Within he writes, “Nothing so perilous as procrastination” (1579/1995). Earlier research into the nature of procrastination is obtainable through the Perseus Project (Crane, 1999), an extensive electronic collection of classical texts. Searching this database, there are several illuminating references. Focusing on the more notable sources, we find in 44 B.C. Marcus Cicero spoke upon this subject. Cicero was the consul of Rome, its highest political office, and an infamous orator who spoke against several political opponents such as Catiline, who Cicero had killed, and Mark Anthony, who had Cicero killed. In a series of speeches denouncing Mark Anthony, he states, “in the conduct of almost every affair slowness and procrastination are hateful”(Philippics, 6.7). Roughly 400 years earlier were the musings of Thucydides, an Athenian general who wrote extensively on the war with the Spartans, including various aspects of personalities and strategies. He mentions that procrastination is the most criticized of character traits, useful only in delaying the commencement of war, so as to allow preparations that speed its conclusion (Histoires, 1.84.1).2 Finally, there is Hesiod who wrote joke (i.e., a book on procrastination that was never completed). See also Kaplan (1998) for another well-conducted academic article/prank. 2 As this reference indicates, procrastination is occasionally used in a positive sense, as in functional delay or avoiding rush (e.g., Bernstein, 1994; Ferrari, 1993b; Subotnik, Steiner, & Chakraborty, 1999). For example, “Once we act, we forfeit the option of waiting until new information comes along. As a result, no-acting has value. The more uncertain the outcome, the greater may be the value of procrastination [italics added]” (Bernstein, 1998; p. 15). The focus of this paper, however, is on the primary, negative form of procrastination. The Nature of Procrastination 7 near 800 BC. Hesiod is one of the first recorded poets of Greek literature, and thus provides one of the first citations possible. His words are worth repeating in full (Works and Days, l. 413): Do not put your work off till to-morrow and the day after; for a sluggish worker does not fill his barn, nor one who puts off his work: industry makes work go well, but a man who puts off work is always at hand-grips with ruin. As an additional Eastern reference, there is the Bhagavad Gita. Written approximately 500 BC, it is considered to be the most widely read and influential spiritual text of Hinduism (De, 1996). Within it, Krishna maintains: “Undisciplined, vulgar, stubborn, wicked, malicious, lazy, depressed, and procrastinating; such an agent is called a Taamasika agent” (18.28). Of special note, Taamasika people are considered so lowly that mortal rebirth is denied to them. Rather, they go to hell. Given this constancy of opinion, from today to the beginning of recorded history, procrastination must be considered an almost archetypal human failing. It also makes it rather unsurprising that we did not address it sooner. Method Meta-Analytic Method The summary of the results primarily followed the Hunter and Schmidt (1990) psychometric meta-analytic procedure. It is designed for estimating the mean effect size and the amount of residual variance in observed scores after considering artifacts, usually sampling error and unreliability. Mean effects sizes are expressed as correlations, consequently requiring the conversion of t-scores, d-scores, and F-scores where necessary and possible. Corrections were employed for dichotomizing a continuous variable, uneven splits, range restriction as well as range enhancement, similar to range restriction but where one selects only extreme scores. When The Nature of Procrastination 8 a study used multiple measures of procrastination or of another target variable, these were averaged so only one, independent correlation was included in the analysis. Of note, the confidence interval refers to the precision with which the expected mean effect is measured, and consistent with the random effects model, the heterogeneous form is employed here (Whitener, 1990). The credibility interval refers to the limits within which an observed effect will likely be in any particular population, that is the degree of generalizability. It is based on the residual variance after accounting for sampling error and, in this study, unreliability. To avoid negative residual variance (i.e., when expected sampling error is greater than observed variance), this study employs the Iterative Homogeneity of Variance Index (IHVI; Steel & Kammeyer-Mulller, 2003). For the entire range of possible true population variances, the IHVI iteratively calculates the probability that they may have given rise to the observed variance. Averaging the sum of these probabilities creates an improved unbiased estimate of observed variance that prevents negative residual variance. In addition, the IHVI technique can provide confidence intervals around the residual variance itself, indicating its likely minimum and maximum amount. This method, instead of the traditional Q statistic, is employed, indicating the percentage of variance likely unexplainable by sampling error and reliability. Aside from the Iterative Homogeneity of Variance Index, the meta-analytic method used here does differ from Hunter and Schmidt (1990) in one other respect. Their equation for estimating ˆ 2 (i.e., moderator effect, between-studies variance) tends to underestimate as the number of studies decreases (Hall & Brannick, 2002; Steel & Kammeyer-Mueller, 2002; Cornwell & Ladd, 1993). The reason for this bias is primarily due to using the sample-size weighted mean correlation in place of true , which if could be obtained would give a less biased finding. Brannick (2001) offers a simple fix to this problem and it is consistent with the random The Nature of Procrastination 9 effects model and other variance estimates (e.g., the standard deviation); multiply the obtained figure by K/(K-1) and this correction is employed. Finally, for estimating the effects of unreliability, Hunter and Schmidt (1990) suggest that the reliability of scales may be obtained from studies other than those used in any specific analysis. Consequently, the reliability of each measure for each study was based upon the sample-size weighted average of all studies using that scale within this meta-analysis. When no study provided the needed reliability, the sample-size weighted average of similar measures was employed. This allowed the reliability correction to be conducted on an individual study level rather than through artifact distribution. As typical, refers to the reliability corrected, samplesize weighted, mean effect size. Literature Review Explorations into procrastination have cut across a variety of fields, including psychology, sociology, political science, and economics, requiring a broad search to gather the appropriate publications. As an initial resource, the Procrastination Research Group (2002) has attempted to maintain a list of articles, chapters, books, and dissertations on procrastination and a copy of it is maintained on-line. Though admirably extensive, this list is incomplete, especially with regards to articles from the fields further from psychology.3 To supplement this list, the following steps were taken. First, several databases were searched. For all available years to present, the computer databases of ABI/INFORM, EconLit, ERIC, MEDLINE, PsychINFO, Proquest Digital Dissertations, and the Academy of Management Online Article Retrieval System were explored, primarily using the keywords of: procrastination, dynamic inconsistency, temporal discounting, 3 Of note, the list is updated periodically and this comment is likely inaccurate after a recent revision. The Nature of Procrastination 10 hyperbolic discounting, and irrational exuberance. Second, the Social Sciences Citation Index (i.e., Web of Science) was searched for all publications that cited an article regarding procrastination assessment (e.g., the PASS; Solomon & Rothblum, 1984). Third, if an author was found to publish more than one article on procrastination, they were contacted where possible. This was done to better uncover individual research programs on procrastination (i.e., “file drawer” problem). Fourth, once procrastination-focused references were obtained, each publication’s own reference list was also examined for other publications. Masters and doctoral dissertations were included in this review as well as unpublished works, when the requisite author was reachable and responsive. Foreign-language articles were also included. In total, 438 sources were initially identified for review. After excluding those that mentioned procrastination peripherally or failed to provide data (e.g., counseling case studies of procrastination), this review considers 166 separate works: 7 book chapters, 5 conference proceedings, 2 unpublished papers, 2 electronic sources, 112 journal articles, and 38 theses. In total, 678 correlations were summarized. All studies were double-coded and discrepancies resolved to ensure accuracy. Moderator Search Though it is unlikely that all the variance in results can be accounted, it can be substantially reduced through a moderator search. At a minimum, Wortman (1994) recommends investigating differences in methodology. On this point, there is little variance, with most studies using a correlational design based on self-reports. This leads to the possibility of system-wide mono-method bias, though the extent of this as a problem has been addressed in specific studies (e.g., Steel et al., 2001; Scher & Osterman, 2002). Still, several methodological variables can be considered. As typical in psychological research, most of the studies employed young, university students. To address whether this is a limitation to the generalizability of the findings, a The Nature of Procrastination 11 moderator search based on age of participant was conducted. In addition, the studies were coded according to whether the samples represented student, general, or adolescent/child populations. Second, it is also possible that some studies were conducted more carefully than others. The difficult of estimating study quality is extreme (Wortman, 1994), though as mentioned, most of the results are based on a relatively straightforward correlational design and thus quality is not expected to have a substantial impact. Still, studies were coded as being from journals and nonjournals, with the expectation that journal articles on-average are better quality. Also, extreme correlations were examined to determine if they represented outliers, as per Huffcutt and Arthur (1995). Studies over four standard deviations from the mean were typically excluded from the analysis, though at times it was possible to check and correct such extreme scores with the lead author. By this way, two typographically errors were detected as the sign of the correlation was reversed in print. Ultimately, the impact of methodological differences was minimal. Neither age, journal status, nor group significantly moderated any relationships. There proved to be only one detectable source of variance: the measures employed. Similar though not identical indices were grouped together to provide sufficient K for meta-analysis. When theory indicates that different scales or tests used may have a significant effect, a moderator search was conducted. There are a variety of techniques for detecting these possible moderators during metaanalysis, though recent work by Steel and Kammeyer-Mueller (2002) unambiguously indicated that weighted least squares (WLS) regression provides the most accurate results. Consequently, WLS is employed here, with categorical variables dummy coded. As recommended (Tabachnick & Fidell, 1989), analysis is limited to when there is at least five cases (K) per moderator variable. Results are reported where statistically significant (p<.01). The Nature of Procrastination 12 Categories of Research The results are classified into five broad or super-ordinate groups. The first summarizes the convergence within and among procrastination measures. The second group is a cluster of studies that connect procrastination to the nature of the task itself. The third is the largest of four, dealing with individual differences associated with procrastination. The fourth includes studies that address intrinsic aspects of procrastination. Finally, demographic predictors of procrastination are examined. For all but the first group, the review of the research is presented in a set format. The topic is first introduced, then defined, and then related to other constructs. In addition, the ways that a topic might create procrastination are briefly considered followed by a summary of the results. After this summary, the research upon which this conclusion is based is examined, usually in two or more subsections. Regarding the interpretation of the correlations, a weak effect is considered around .20, a moderate effect is around .30, and a strong effect is .40 or greater. RESULTS AND DISCUSSION Convergence Within & Among Procrastination Measures Ideally, we would like different measures of procrastination to correlate fairly highly. It indicates widespread convergent validity, where all the indices are assessing procrastination to a substantive extent. Initial research indicated that circumstances were less than ideal, with Ferrari et al. (1995) noting, “it is possible that the use of an inappropriate measure [of procrastination] would result in erroneous conclusions, either wrongly supporting or rejecting one’s hypothesis” (p. 70). Fortunately, more recent findings indicate fairly good agreement among measures. The reliability, convergence, and validity of procrastination measures are covered in the following The Nature of Procrastination 13 four sections: Internal Reliability, Scale Convergence, Divergent Validity, Convergent Validity, and Domains of Procrastination. Internal Reliability. Determining the internal reliability is often the initial step of evaluating any scale. At a minimum, we would like each measure to at least agree with itself. In total, 124 samples were located that contained reliability data regarding a procrastination scale that was administered more than once and that reported the appropriate statistics. Results are summarized in Table 1. All coefficients are expressed as Cronbach’s alpha, requiring conversion of split-half reliabilities where necessary. However, additional commentary for two scales is provided below. The Procrastination Assessment Scale-Students (PASS; Solomon & Rothblum, 1984) has two relevant scales, degree of frequency and degree of problem, which are at times separately administered. For both scales in conjunction, it has an internal reliability of .83 (K=3), which reduces to .74 (K=8) for the frequency scale and .73 (K=4) for the problem scale. Both scales correlate together at .89 (Beswick et al., 1988; Smith, 1994). Of particular note, Ferrari (1989a) indicates the PASS’s reliability to be much lower, as low as .34, and this is often what is reported (e.g., Corcoran & Fischer, 2000). However, in subsequent publication (Ferrari et al., 1998), he cites his original work but gives much higher figures. These later figures are considered the more accurate. Also, the Decisional Procrastination Questionnaires (DPQI, Mann, 1982; DPQII, Mann, Burnett, Radford, & Ford, 1997) are examined together as the only difference is that the earlier version has the item “I don’t make decisions unless I really have to,” while the latter uses “When I have to make a decision I wait a long time before starting to think about it.” For these five-item The Nature of Procrastination 14 measures, the internal reliability is .79 (K=22). Of note, the DPQ is specific to delaying decisions while the other questionnaires deal with behaviors. Scale Convergence. There have been a limited number of times different measures of procrastination have been simultaneously administered and relationships reported. Total results, including means and standard deviations for each measure, are displayed in Table 2. Of these, findings are almost exclusively confined to the Adult Inventory of Procrastination (AIP), the Decisional Procrastination Questionnaire (DPQ), and the General Procrastination Scale (GPS) and these are discussed here in greater detail. Overall results are quite good, especially after correcting for attenuation. The lowest average correlation is .46 or .57 corrected for attenuation, found between the AIP and the DPQ, based on a K of 14 and an N of 2,288. It can be expected that this correlation would be the smallest given the conceptual differences between behavioral and decisional procrastination. However, the average correlation between the DPQ and another behavioral procrastination measure, the GPS, is much higher, .66 or .79 corrected for attenuation, based on a K of 9 and an N of 1,400. Finally, the average correlation between the AIP and the GPS is .57 or .68 corrected for attenuation, based on a K of 10 and an N of 1,058. This is unusual given that it is lower than the correlation between the DPQ and the GPS despite both being behavioral measures of procrastination. There has been one notable but ultimately unsuccessful attempt to explain this discrepancy. Ferrari (1992b) suggests that the difference was due to the GPS assessing arousal procrastination, putting off to seek thrills, while the AIP assessing avoidance procrastination, putting off to protect self-esteem. This original finding has often been repeated (e.g., Ferrari, The Nature of Procrastination 15 1993a; Ferrari et al., 1995) and others have based their research upon it (e.g., Blunt & Pychyl, 1998; Flett, Hewitt, & Martin, 1995). However, Ferrari’s results should be stronger, being based on an exploratory factor analysis that has failed to replicate (Ferrari, 2000). Furthermore, as reflected in the meta-analytic work conducted here, GPS’s correlation with self-esteem is -.286 (K=9, N=1,091), while AIP’s correlation is -.235 (K=4, N=645). Not only are these two correlations not significantly different (p>.05), but it appears that GPS actually may have the stronger self-esteem association. Alternatively, if we take Ferrari’s (1992a, 1992b) initial results (r=.07, K=3, N=326) to be outliers, and they do appear to be so (p<.00001), no other explanation is needed. By eliminating them, the average correlation between the AIP and the GPS rises to .78 or .93 corrected for attenuation, with no significant heterogeneity in results. Divergent Validity In absence of established theory, it is difficult to determine what procrastination should be unrelated to. At a minimum, though, it should prove essentially orthogonal to defensiveness, that is social-desirability, response distortion, and lie scales. This independence may be difficult to achieve since procrastination does have negative connotations and people may wish to conceal it. As Table 3 reveals, there is a significant correlation between defensiveness and procrastination, but fortunately it is also quite weak, r = -.18 (K=11). Convergent Validity Though high correlations among procrastination measures is desirable, forms of validation other than self-report is also needed. To this end, two other types of data have been gathered, the correlation between self-report with other-report as well as with observed behavior. Regarding observed behavior, the number of (in)actions that can represent procrastination is immense, though are organized here into four major groups: Delay Starting Tasks, Lack of Task The Nature of Procrastination 16 Progress, Delay Finishing Tasks, and Missing Deadlines. Results are summarized in Table 3 and strongly support the validity of procrastination measures. To begin with, six studies have been conducted examining the relationship between self and other ratings of procrastination. The average correlation proved to be .33 (N = 986) or .38 corrected for attenuation. Though these results are reasonable, future research may uncover still higher correlations. The majority of these results are based on teacher’s observation of children and adolescents using novel rating scales with uncertain reliability. For the remaining observed measures of procrastination, researchers have been prolific in developing ways of observing procrastination. Efforts range from Christmas shopping to Ph.D. completion. Unfortunately, they typically represent “immediate” criteria (Thorndike, 1949), easily obtainable but only distally related to the construct of interest. This may be an inherent research limitation to this area. Uncontestable eyewitness testimony to procrastination is rare. Though delaying is fairly evident, several other components of procrastination are very subjective and whose existence can only be inferred from actions. For example, it can be hard to unequivocally state that a task was intended or that delaying it decreased a person’s utility. Within trait or disposition research, this is a common problem as objective, shared reality (“alpha press”) may differ substantially from one’s personal interpretation (“beta press”; Murray, 1938). Despite these limitations, the correlation between observed and self-reported procrastination is quite good. As Table 4 indicates, the typically correlation exceeds .30, above what the .20-.30 range that Michel (1968) estimates for “personality coefficients.” However, future efforts should continue improving the use of observed measures, for as Tellegen (1991) sensibly notes that “the behaviors in question must be inherently recognizable as…expressing a The Nature of Procrastination 17 particular disposition” (p. 19). Looking at the upper range of the credibility intervals, it may be possible for to find behaviors that correlate with procrastination as high as .60 or .70. Domains of Procrastination Of note, most constructs of interest have both a general trait and a domain-specific expression, with typical measures capturing both (Smith, 1976). Procrastination is no exception, though here the terms are typically described as chronic and situational (e.g., Blatt & Quinn, 1967; Ellis & Knaus, 1977). In other words, though people tend to consistently procrastinate across different situations, they are still susceptible to the influences of individual domains. The degree to which procrastination scales are generalizable is dependent on the impact of situational specificity. Investigating this, researchers have looked at the factor structure of individual scales as well as comparing domain specific measures of procrastination. Regarding the factor structure of procrastination, some measures, such as the TPS and the DPQ, were specifically developed to load on a single factor. Others show less unity, with Somers (1992) indicating that the GPS loaded on five factors. More recently, Vestervelt (2000) conducted an exploratory factor analysis on several procrastination measures simultaneously, extracting the two dimensions of general trait procrastination and punctuality regarding routine personal tasks. Exclusively in the academic realm, Han (1993) closely examined several areas measured by the PASS. He found that some academic tasks (i.e., reading assignments, writing term papers, and studying for exams) were closely linked, generating an average r of .72, but generated substantially lower associations with others areas (i.e., administrative tasks, making appointments), r of .35. Finally, Froelich (1987) had respondents indicate whether they procrastinate for a wide range of household, financial, personal, social, work, and school tasks. The Nature of Procrastination 18 Incidence rates went from 86% (school work) to 2% (balancing checkbook). Domain-specific effects clearly exist. What creates domain-specific effects has been closely examined by Milgram and his colleagues in a series of studies. Comparing life-routine and academic procrastination, they found the average correlation to be .53 (K=4, N=286; excluding one early and extreme outlier of r=.06). However, in Milgram, Mey-Tal, and Levison’s (1998) study, they found the correlation to be .65 despite using a diversity of academic (i.e., class presentations, final exams, and lengthy papers) and routine tasks (e.g., dental visits, dishwashing, and paying tuition). These high correlations may be due to Milgram et al.’s item selection as they mostly represent behaviors that are typically unpleasant. Accordingly, Milgram et al. interpret these findings as consistent with an appraisal-anxiety-avoidance model for procrastination. We tend to avoid tasks that we find aversive. This suggests that tasks can be selected across a wide range of domains as long as people tend to uniformly like or dislike them. That task aversiveness is a key feature in determining the appearance of procrastination is discussed more fully in the following section Task Nature & Procrastination. Task Nature & Procrastination Procrastination involves voluntary choosing one behavior or task over that of other options despite expecting to be eventually worse off for the choice. Consequently, we cannot irrationally delay all our tasks, but simply favor some over others. Unless we procrastinate randomly, the nature of the task itself must then have some effect upon our decisions. True to this conclusion, about 50% of people respond that their procrastination was due to some task characteristic (Briody, 1980). Two predictable effects have been observed: I) Timing of Rewards & Punishments, and II) Task Aversiveness. First, we tend to favor tasks that are more pleasant in The Nature of Procrastination 19 the short-term even if they are detrimental to ourselves in the long-term. Second, the more intrinsically unpleasant is a task, the more likely we are to avoid doing it. These outcomes are intuitively obvious and, in fact, they are so dependably replicated that they can be considered “laws” of behavior. Timing of Rewards & Punishments It has long been observed that the further away an event is temporally, the less impact it has upon our decisions (e.g., Lewin, 1935). Ainslie (1975) gives a historical account of this phenomenon from a predominantly psychological perspective under the rubric of impulsiveness, while Lowenstein (1992) traces its roots from a predominantly economic standpoint in terms of temporal discounting. Support for this effect is bountiful, with sufficient research to formally place it as one of the psychological laws of learning (Schwartz, 1989) or the dominant economic model of intertemporal choice or discounted utility (Lowenstein & Elster, 1992). Unfortunately, the research on temporal effects specific to procrastination has not been correlational, and thus is not summarized meta-analytically. Still, there are some useful examples. In his essay on procrastination, Samuel Johnson (1751) posits temporal proximity as a cause in that it is natural “to be most solicitous for that which is by its nearness enabled to make the strongest impressions.” More recently, this preference for the present has been resurrected as an explanation. Essentially, the rational choice for any course of action is to maximize our overall utility. However, we tend to favor our present utility far, far more than the well-being of our future selves. Mazur (1996, 1998) investigated this from a psychological paradigm, finding that pigeons will indeed put off a small amount of work now for a delayed reward in favor of having to do much more work later for the same result. Similarly, O’Donoghue and Rabin (1999) used the economic discounted utility model to describe various forms of human procrastination The Nature of Procrastination 20 such as our tendency to inadequately save for retirement. Also, self-report methodology indicates the importance of temporal proximity. When students were asked how much they would procrastinate under various conditions, they indicated it would diminish as the task nears completion or as a deadline approaches (Strongman & Burt, 2000; Schouwenburg & Groenewoud, 2001). Task Aversiveness Task aversiveness is almost a self-explanatory term. Also known as dysphoric affect (Milgram, Sroloff, & Rosenbaum, 1988) or task appeal (Harris & Sutton, 1983), it refers to actions that we find unpleasant. Its relationship is predictable. By definition, we seek to avoid aversive stimuli, and consequently, the more aversive the situation, the more likely we are to avoid it (e.g., procrastinate). Though there may be a variety of reasons we dislike a task, if we do find it unpleasant, research indicates we are indeed more likely to put it off. Of note, the hedonic nature of the task can only account for procrastination in combination with that regarding temporal placement. By itself, it primarily predicts only task avoidance, not task delay. One way of assessing why people procrastinate is to directly ask them. To this end, several researchers administered the Procrastination Assessment Scale-Students. Part of it asks respondents to indicate why, out of 26 possible reasons, they might procrastinate writing a term paper. Factor analysis of responses consistently generates a dimension best described as “Aversiveness of Task,” with its most popular item, “Really dislike writing term papers,” endorsed by 45% of the respondents (Kachgal et al., 2001; Peterson, 1987; Rawlins, 1995; Solomon & Rothblum, 1984). Using a comparable format, Briody (1980), Froelich (1987), and Haycock (1993) found that two top-rated reasons for procrastinating a task were that it was either The Nature of Procrastination 21 unpleasant or boring and uninteresting. Using an open-ended format, Ferrari (1993a) elicited a similar reason why people Christmas shopped late. They disliked shopping. In addition, aversiveness has been investigated for several different types of tasks, including personal projects, daily tasks, academic tasks (such as publication), and job search behaviors. This research has employed a variety of methodologies, including the more rigorous formats of time sampling and daily logs (Ferrari & Scher, 2000; Pychyl et al., 2000). Consistently and strongly, the more people dislike a task, the more they consider it effortful or anxiety producing, the more they procrastinate (ρ=.46, K=8). Interestingly, two moderators of this effect are reported. First, aversiveness effects intensify if the projects are short-term (Lay, 1987, 1990). Second, this relationship between procrastination behavior and task aversiveness was moderated by conscientiousness, with low conscientiousness apparently increasing the effect of task pleasantness on procrastination (Lay & Brokenshire, 1997; see also Somers, 1992). Also, the correlation between trait procrastination and finding tasks aversive in general is also strong and stable (ρ=.46, K=10). This indicates that one reason why some people procrastinate more is simply because they find more of life’s chores and duties aversive.4 Finally, several researchers have considered what type of task adversity is best correlated with procrastination. Jobs characterized by lower autonomy, task significance, and feedback were likely to increase decisional procrastination (Lonergan & Maher, 2000), though less related to behavioral procrastination (Coote-Weymann, 1988; Galué, 1990). Instead, behavioral procrastination was most strongly associated with the aversive task components of frustration, resentment, and particularly boredom (Blunt & Pychyl, 2000; Briody, 1980; Haycock, 1993; Strongman & Burt, 2000). Similar results were found using experimental methodology (Senécal, Ottens (1982) makes this observation early on, noting that “procrastinators perceive task situations in such ways so as to exacerbate their aversiveness” (p. 371). 4 The Nature of Procrastination 22 Lavoie, & Koestner, 1997; Sigall, Kruglanski, & Fyock, 2000). The more boring and difficult a task was made, the more likely people delayed doing it. Individual Differences & Procrastination There is some evidence that there may be a biological or genetic component to procrastination. A recent unpublished study by Arvey, Rotundo, Johnson, and McGue (2002) asked 118 identical and 93 fraternal male twins reared in the same family to indicate the degree to which they were a “procrastinator” on a 7-point Likert scale (1=Never, 7=Always).5 The intraclass correlations for this item for identical twins was .24 and for the fraternal twins it was .13; suggesting that approximately 22% of the variance on this item was associated with genetic factors. Also, eight short-term studies (N = 715) were located that had test-retest reliability data. After an average delay of 33.6 days, the average correlation was .75. In addition, Elliot (2002) managed to obtain long-term test-retest data for 281 participants who took the Adult Inventory of Procrastination. With a hiatus of 10 years, the correlation was .77, a further indication that procrastination is sufficiently stable to be a trait. Individual differences do appear to matter. Attempts to specify the relationship between procrastination and individual differences have been prolific. These studies conducted on procrastination are primarily correlational. Researchers typically administer multiple self-report personality measures including one that assesses procrastination, and then explore the relationships. This reflects researchers’ basic interest in “trait” procrastination, a variable that precludes experimental manipulation. Despite the prevalence of the five-factor model, the field of personality lacks definitive terminology at the facet level (John & Sanjay, 1999), and many constructs are similar to one another. To reduce redundancy and illuminate potential patterns, comparable constructs are grouped for discussion. The Nature of Procrastination 23 Facets are considered comparable if they can be grouped under a common trait and if they also share a similar theoretical association with procrastination. By eliminating the repetition of etiologies, these groups should be helpful, though they should not be considered definitive. For example, self-handicapping is strongly related to low self-esteem but also may be treated as a form of emotional self-regulation. This is a common clustering problem and somewhat unavoidable (Hair, Anderson, Tatham, & Black, 1992). Continuing, results are clustered into eight sub-groups, with the first four being neuroticism or its aspects: I) Neuroticism: Trait Anxiety & Negative Affect, II) Irrational Beliefs: Fear of Failure, Perfectionism, Self-Consciousness, & Evaluation Anxiety, III) Low SelfEfficacy, Low Self-Esteem, & Self-Handicapping, IV) Depression, Energy, Learned Helplessness, & Pessimism, V) Extraversion: Positive Affect, Impulsiveness, Distractibility, & Sensation-Seeking, VI) Disagreeableness: Rebelliousness & Hostility, VII) Openness to Experience: Intelligence/Aptitude, and VII) Conscientiousness: Self-Control, Organization, Achievement Motivation, & Self-Regulation Finally, Tables 4 through 6 meta-analytically summarizes all these findings. Neuroticism: Trait Anxiety & Negative Affect Following up on task aversiveness, some researchers have also explored trait anxiety as a source of procrastination. Trait anxiety is extremely similar to worrying, neuroticism, or negative affect. As depicted by the neuropsychologist Gray (1987) and other researchers (Carver & White, 1994; Tellegen, 1985), they likely all describe manifestations of the behavioral inhibition system, a brain function that alerts people to danger or punishment. Typically, researchers argue that if people procrastinate on tasks because they are aversive or stressful, then those who are more susceptible to experiencing stress should procrastinate more. Consequently, the highly 5 This one-item on procrastination was suggested for inclusion in the study by the present author. The Nature of Procrastination 24 anxious, who can find cataclysmic interpretations in benign events, should be irrationally putting off much of life’s large and little duties. However, others argue that this is too simple a depiction. As McCown, Petzel and Rupert (1987) discuss, it is equally plausible that neurotics would be extremely prompt so as to remove the dreaded task as quickly as possible. Also, the consequences of facing a deadline unprepared may be so terrible that anxious people work exceedingly hard to avoid ever confronting such circumstances. Empirically, results indicate that neither rendition is completely correct. Trait anxiety, on balance, has a weak connection to procrastination. One may contrast this conclusion with what is typically declared in several articles and clinical books in this area, that procrastinators are stress-prone (e.g., Brown, 1991; Burka & Yuen, 1983; Ellis & Knaus, 1977). Neuroticism & trait anxiety. Results do not support anxiety as a source of procrastination. Studies that directly assess trait anxiety or chronic worrying have found a weak correlation (r=.24, K=28), the same as with neuroticism (r=.24, K=17).6 Furthermore, neuroticism’s connection to procrastination appears to be primarily due to impulsiveness, not anxiety. Results analyzed at the facet level indicated that neuroticism’s connection to procrastination was “largely a matter of impulsiveness” (Schouwenburg & Lay, 1995, p. 488; also, Johnson & Bloom, 1995), and it added little unique variance over conscientiousness. Support for this conclusion can be found by segmenting the results by measure: the EPQ (Eysenck & Eysenck, 1976), the BPP (Harary & Donahue, 1994), and the BFI (John, Donahue, & Kentle, 1991) do not nest impulsiveness with neuroticism to the same extent as the NEO (Costa & McCrae, 1992) or the EPI (Eysenck & Eysenck, 1975). 6 This analysis excludes the recent work by Hess, Sherman, and Goodman (2000), who found a correlation of .51 with neuroticism. Unfortunately, the measure they used was unusual in that it included specific reasons for procrastination (e.g., fear of failure) scores along with behavioral procrastination scores. Naturally, those who indicate they procrastinate for neurotic reasons are more likely to be neurotic. The Nature of Procrastination 25 Examining the studies that used the EPQ, BPP, and BFI alone suggests a mean correlation of just .11 while those that used the NEO and EPI suggests a mean correlation of .31. Separating results into these two groups accounts for 50% of the variance (F(1,14)=13.95, p<.01). Finally, there are two other anxiety related issues. First, McCown et al. (1987) reported a curvilinear relationship between neuroticism and procrastination that explained approximately 61% of the variance. This is an extremely strong finding, but not equally robust. Unfortunately, no supporting result has been reported in any subsequent work (Johnson & Bloom, 1995; Schouwenburg & Lay, 1995; Steel et al., 2001), and McCown et al.’s original work could be considered anomalous. Second, Blatt and Quinn (1967) argued that procrastination was due to a form of anxiety, specifically death. Testing this, Donovan (1995) found a correlation of .28 between procrastination and the Death Anxiety Scale, which is not significantly different from the results obtained for general anxiety. Negative affect. Regarding negative affect as a trait (as a state is covered later under the heading Mood), research indicates a moderate correlation with self-report procrastination. Meta-analytic review indicates its average correlation is .29 (K=7). However, it appears to be essentially unrelated to observed procrastination (Steel et al., 2001). Such a dichotomy suggests that those who are more anxious or have more negative affect may be harsher judges of their own behavior, but are not necessarily poorer performers. Research in other areas supports such an interpretation (Carver & Scheier, 1990; Ellis, 1989; Sarason, Sarason, & Pierce, 1990). Irrational beliefs: Fear of Failure, Perfectionism, Self-Consciousness, & Evaluation Anxiety Irrational belief, cognition, or thought is a broad term that includes several dysfunctional or anxiety-provoking worldviews. Ellis (1973) characterizes them as: (1) almost certainly The Nature of Procrastination 26 hindering the pursuit of happiness and fulfillment of desires, and (2) almost completely arbitrary and unprovable. Since these beliefs create anxiety, they may foment procrastination in a similar manner as thought for neuroticism; they make certain tasks increasingly unpleasant. In the words of Aitken (1982), “The higher the possibility of rejection (real or imagined), the more likely it is that the individual will experience anxiety as he approaches the task. Since even thinking about the project evokes feeling of anxiety, the procrastinator starts an alternate task or distraction” (p. 32). Of all possible irrational beliefs, Knaus (1973) argues that only two are closely related to procrastination, that is believing oneself to be inadequate and believing the world is too difficult and demanding. Researchers have followed in Ellis and Knaus’ footsteps by investigating among procrastinators the prevalence of irrational beliefs as well as three specific manifestations. Particularly close attention has been paid to fear of failure, perfectionism, and evaluation anxiety, all reasons related to being worried about receiving harsh appraisal. Though clinical work stresses that irrational beliefs are a major source of procrastination (Burka & Yuen, 1984; Ellis & Knaus, 1977), empirical surveys fail to unequivocally support this assertion. Results are irregular and often weak, though a socially prescribed form of perfectionism generates more consistent findings. Irrational beliefs. To begin with, researchers have administered a wide range of irrational beliefs or selfcritical cognitions inventories along with a measure of procrastination. Meta-analytic review indicates its average correlation is .27 (K=14). Stronger results have been obtained with the problem avoidance subscale, but this is a trivial finding as it is almost synonymous with procrastination as typically measured. The Nature of Procrastination 27 Fear of failure. Regarding fear of failure, it reflects concern that our efforts will not be up to the accepted standard. Meta-analytic review indicates its average correlation is .14 (K=13). Other research indicates that it does appear to be the source of at least some procrastination. Solomon and Rothblum (1984) extracted a fear of failure dimension from a factor analysis of 26 procrastination reasons, a finding repeatedly replicated (Brownlow & Reasinger, 2000; Clark & Hill, 1994; Onwuegbuzie, 2000b; Peterson, 1987; Rawlins, 1995; Schouwenburg, 1992). The dimension consists of evaluation anxiety, low self-confidence, and perfectionism. Its most popular item was endorsed by approximately 17% of respondents (Kachgal et al., 2001; Solomon & Rothblum 1984), and a typical item is “Were concerned you wouldn’t meet your own expectations.” Generating a similar finding, though using an open-ended questionnaire, Briody (1980) and Haycock (1993) found 16% and 7% of people gave fear of failure as a reason, respectively. This discrepancy between correlational and frequency data likely indicates a form of counterbalancing; people may also cite fear of failure as a reason for not procrastinating. Perfectionism. Empirically and conceptually, perfectionism is closely related to fear of failure (Flett, Hewitt, Blankstein, & Mosher, 1991; Knaus, 1973). As standards become higher and more important, so increases the likelihood and devastation of failure. Research has typically explored three forms of perfectionism: (1) self perfectionism, where we set our own standards, (2) other perfectionism, where we set standards for significant others, and (3) socially prescribed perfectionism, where we believe significant others have set standards for us. Results indicate that only socially prescribed perfectionism is related to procrastination. As the meta-analytic review in Table 4 indicates, the average correlation for self-perfectionism it is -.03 (K=18), for other- The Nature of Procrastination 28 perfectionism it is .02 (K=11), and for socially-prescribed perfectionism is .20 (K=11). According to Haycock (1993), only 7% of people report perfectionism as contributing to their procrastination. In addition, the Almost Perfect Scale (Slaney, Ashby, & Trippi, 1995) of perfectionism has four items related to procrastination. As reviewed by Enns and Cox (2002) and Slaney, Rice, and Ashby (2002), perfectionists generally scored the same or lower on procrastination than nonperfectionists, the exception being when the perfectionists were also seeking clinical counseling. Self-Consciousness Self-consciousness is similar to perfectionism, though tends to load on a different dimension when factor-analyzed (Ferrari, 1992b). Self-consciousness refers to concerns about norms, and like perfectionism, it has a public and private form. People high in public selfconsciousness can be described as other-directed self-monitors, always attempting to make a good impression (Schlenker & Weigold, 1990). Alternatively, those privately self-conscious also self-monitor but do so in their attempt to maintain authenticity with their internal values. The hypothesized relationship of self-consciousness to procrastination is similar to that of perfectionism. By attending to norms, the emotional impact of failing to meet them should increase (Beck, Koons, & Milgram, 2000). Unlike perfectionism, the public/social form of selfconsciousness does not generate a substantially higher correlation (r=.20, K=15) than the private/self form (r=.19, K=9). Evaluation anxiety. Finally, researchers have investigated evaluation anxiety or test anxiety with a wide range of measures. Meta-analytic results indicate its relationship is almost identical to that of trait anxiety; it has a weak but reliable connection with procrastination with an average correlation of The Nature of Procrastination 29 .21 (K=17). Using an experimental design, Senécal et al. (1997) found further support. Procrastinators are more likely to put off difficult and boring tasks when they expect to be evaluated. Low Self-Efficacy, Low Self-Esteem, & Self-Handicapping As fear of failure was associated with neuroticism, so it is connected with both low selfefficacy and low self-esteem (Ellis & Knaus, 1977). Specifically, people suffering from irrational beliefs may doubt their ability to do well (i.e., low self-efficacy) and believe that any failure to perform to standard suggests inadequacy as a person (i.e., low self-esteem). Independent of fear of failure, self-efficacy and self-esteem have also been argued to have direct links to procrastination and performance (Bandura, 1986; Burka & Yuen, 1983; Judge & Bono, 2001). Procrastinators might not feel that their actions will change their situation, and thus they concentrate on managing their emotional reactions to the situation instead. Consequently, to cope, they tend to use an emotion-oriented rather than a task-oriented style (Berzonsky, 1992; Flett, Blankstein, & Martin, 1995). A particularly well-researched form of this emotion-focused, dysfunctional self-regulation is self-handicapping, that is when people place obstacles that hinder their own good performance. The motivation for self-handicapping is often to protect self-esteem by giving people an external reason, an “out,” if they fail to do well (Jones & Berglas, 1978; Smith, Snyder, & Handelsman, 1982). The research conducted does indicate that procrastination has a weak to moderate but reliable relationship with self-esteem and strong and reliable relationships with self-efficacy and self-handicapping. It is likely that low self-efficacy and self-esteem may decrease the desirability of a given task, which in turn creates procrastination. Empirically, it also seems that at least some The Nature of Procrastination 30 procrastination is self-handicapping done to protect self-esteem in the face of a difficult task and low self-efficacy. Self-efficacy. Essentially, efficacy is another word for competence. Consequently, self-efficacy reflects beliefs about our own ability to successfully achieve a desired outcome. Bandura (1986) argues that when our self-efficacy is weak, it reduces expectancy about success, damages motivation, and ultimately hinders task initiation and persistence (i.e., it causes procrastination). Metaanalytic review indicates its average correlation is -.45 (K=22). Also, two other studies support of the importance of self-efficacy. Briody (1980) did find 8% of respondents stating that low self-confidence was a cause of procrastination. Micek (1982) found that procrastinators were more likely to give up on their efforts when encountering an obstacle (r=.40). Self-esteem. Low self-esteem is associated with diminished self-confidence and increased anxiety (Burka & Yuen, 1983). It may cause procrastination in a manner similar to low self-efficacy. People feel that tasks are beyond their capabilities and to engage in them would merely confirm their own lack of worth. Consequently, those with low self-esteem may avoid difficult tasks altogether or handicap themselves to prevent any easy inferences about ability. To do otherwise is to risk an aversive impact upon their self-concept. As meta-analytic review indicates, the average correlation for self-esteem is -.26 (K=33). However, past research indicates that selfesteem can be divided into global, which consists of general self-efficacy and self-liking (Tafarodi & Swann, 2001), and social, which refers to feelings of adequacy within social groups (Van Tuinen & Ramaniah, 1979). Dividing findings into these two categories reduced The Nature of Procrastination 31 heterogeneity by approximately 10% and indicates that global self-esteem is primarily connected to procrastination (F(1,30)=3.14, p=.09). Self-handicapping. Self-handicapping is a collection of behaviors related to low self-efficacy and low selfesteem. They hinder performance and are often used to cloud conclusions regarding one’s ability. It is also associated with a diffuse/avoidant identity style (Berzonsky, 1992), a personality type that seeks to avoid relevant information about oneself. The relationship between procrastination and self-handicapping or diffuse/avoidant identity style is strong, with an average correlation of .45 (K=16). Though moderator analysis does not indicate that self-handicapping and diffuse/avoidant identity style are noticeably different (R2=.02, F(1,16)=.40, p=.54), they are reported separately given their conceptual differences. As additional evidence, procrastinators tend to spend more time on projects if they are likely to fail, while the opposite relationship is seen for non-procrastinators (Lay, 1990). Similarly, procrastinators voluntarily entered into conditions or engaged in activities that selfhandicapped their performance on evaluative tests (Ferrari, 1991c; Ferrari & Tice, 2000). However, it is debatable whether self-handicapping should strictly be considered a form of procrastination. Empirically, Clay, Knish, and Zanatta (1992) found several divergent relationships between self-handicappers and procrastinators. Conceptually, there also appears to be differences. As Brown and Marshall (2001) discuss, an honest attempt at the task for people with low self-efficacy and self-esteem promises the gain of a little pride if they succeed, though at the risk of significant shame and humiliation if they fail. Given their “bounded” worldview, albeit perhaps faulty, it is to their benefit not to make an unambiguous bid at succeeding. Their “procrastination” is then done purposefully, to maximize their overall utility. Regardless of one’s The Nature of Procrastination 32 opinion on this matter, procrastination and self-handicapping appear to be at least empirically related. Depression, Energy, Learned Helplessness, & Pessimism. Depression, energy, learned helplessness, and pessimism are closely related to each other and to neuroticism, irrational beliefs, and low self-efficacy or self-esteem. Beck (1993), for example, describes depression as being due to irrational beliefs that result in pessimism and selfdislike. Similarly, several studies have shown that neuroticism greatly increases susceptibility to depression (Ruiz-Caballero & Bermudez, 1995; Saklofske, Kelly, & Jansen, 1995), and Costa and McCrae (1992) go so far as to include depression as a facet of neuroticism in their personality scale. Regarding learned helplessness and pessimism, several researchers argue that they are strongly connected to depression, both theoretically and empirically (Abramson, Metalsky, & Alloy, 1989; Abramson, Seligman, & Teasdale, 1978; Peterson, Colvin, & Lin, 1992). In addition, McCown, Johnson, and Petzel (1989) conducted a principal components analysis on several psychological inventories administered to a group of procrastinators. They found that depressed affect, neuroticism, and diminished feelings of control over the situation tended to load together, indicating that collectively they could represent at least one of the causes of procrastination. Like other traits, it is expected that depression, learned helplessness, and pessimism may create procrastination by increasing the aversiveness of some tasks, perhaps by reducing motivation or energy. They may also help foster procrastination by decreasing expectancies regarding successful completion, or in other words, by exacerbating the belief that any effort to complete the task would be wasted. Empirically, results are in the same scope as with its sister traits of irrational beliefs, neuroticism, and the like. Correlations tend to be The Nature of Procrastination 33 moderate for depression and energy but weak or non-significant for learned helplessness and pessimism. Depression. Clinical depression has several characteristics that make it a likely suspect for causing procrastination. Depressed people are often unable to take pleasure in life’s activities, they tend to lack energy, and have problems concentrating (DSM-IV, 1994), all symptoms that make task completion difficult. In fact, the Beck Depression Inventory (Beck & Beck, 1972) even includes an item reminiscent of procrastination itself: “I put off making decisions more than I used to.” As summarized, depression is associated with procrastination but moderately, with an average correlation of .28 (K=27). Energy. Aside from depression in general, several studies have focused on one of its symptoms, lethargy or lack of energy. Sensibly enough, Burka and Yuen (1983) discuss how it is harder to initiate tasks when we are tired. Empirical work suggests that they are correct; the average correlation between procrastination and energy level is -.30 (K=10). In addition, tiredness is one of the top three reasons students given for putting off work (Strongman & Burt, 2000), and approximately 28% of students indicated, “Didn’t have enough energy to begin the task” as a source of procrastination (Kachgal et al., 2001; Peterson, 1987; Solomon & Rothblum, 1984). Notably, this item was also associated with others indicating task aversiveness. As our energy wanes, working apparently becomes painful or more difficult (see also Baumeister, Heatherton, & Tice, 1994). Learned helplessness & pessimism. The Nature of Procrastination 34 Learned helplessness and pessimism are in many ways the same phenomenon, reflecting a belief about the nature of the world and ourselves. Essentially, people who have these qualities tend to believe that their successes are not due to their actions and consequently their efforts are somewhat irrelevant. The connection to procrastination is consequently obvious. People who lack motivation to act are also less likely to initiate action (i.e., to procrastinate). To confirm this empirically, two tactics have been favored, though each have failed to generate clear results. The first and most popular method has been to define pessimism in terms of attributional style; the tendency to attribute one’s successes to causes that are outside of oneself (i.e., external attribution) and relatively permanent (i.e., stable attribution) indicates pessimism and learned helplessness. Unfortunately, research has focused almost exclusively on just the locus of control dimension, which alone has an uncertain connection with pessimism. Quite easily, people may believe that their accomplishments are due largely to external causes but still have a high expectancy of success (e.g., “they feel lucky”). Still, findings indicate that procrastinators likely do make more external causal attributions for their achievements. The average correlation is .27 (K=10). A second method for assessing pessimism or learned helplessness has been to directly ask respondents if they agree with a series of statements about “generalized outcome expectancies,” typically using the Life Orientation Test (Scheier & Carver, 1985). It asks questions such as, “If things can go wrong, they will” (i.e., pessimism) or “I expect things to turn out for the best” (i.e., optimism). As Table 5 summarizes, results indicate an average correlation of .14 (K=12). Other research indicates that the relationship between procrastination and pessimism or optimism may be too complex to be described in a general linear fashion. For example, Senécal and Guay (2000) conducted an intriguing study where they compare job-hunting measures of The Nature of Procrastination 35 procrastination and hopelessness, finding a correlation of .29 between the two. Also, Sigall et al.’s (2000) experimental investigation indicates it is possible to be too optimistic. They found that extremely optimistic participants were more likely to procrastinate in initiating an aversive task. An examination of their expectations indicates that they thought they could delay and still finish before the deadline. This finding is similar to Day et al.’s (2000) description of the socially active optimistic who are confident in their ability to successfully delay their work until later. The correlation of this optimistic type with procrastination is .37. Extraversion, Impulsiveness, Distractibility, & Sensation-Seeking Extraversion is one of the more interesting, possible causes of procrastination, but also one of the more complicated. As Carl Jung (1966) describes them, extraverts focus their psychic energy outwards, becoming enthralled with the world around them. Similarly, Eysenck (1975) characterizes them as seekers of external engaging experiences, mostly to compensate for being under stimulated. Consequently, extraverts are usually described as sociable, optimistic, outgoing, energetic, expressive, exciting, and impulsive (Brand, 1997; Guilford, 1977). It is important to note that the exact definition of impulsiveness and its structure wanders somewhat as well as with which personality trait it best represents (Revelle, 1997). Typically, it indicates spontaneity and a tendency to act upon whims and inclinations. Some aspects of extraversion have already been discussed. Optimism (i.e., pessimism) and energy level are also aspects of depression, and impulsiveness has been studied as part of neuroticism. These preliminary findings demonstrate some of the complexities of extraversion as procrastination’s relationship with these facets conflict. Both lethargy and impulsiveness predict procrastination, but the first indicates a lack of extraversion while the second suggests an abundance of the trait. To better address this discrepancy, extraversion, impulsiveness, The Nature of Procrastination 36 distractibility, and sensation-seeking will be discussed individually. Despite this separation, the findings for extraversion are very mixed, though results are more consistent for the remaining traits. Extraversion. Paradoxically, extraversion has been argued as both preventing and causing procrastination. In terms of prevention, low energy should make many tasks more aversive, and thus procrastination more likely. Since extraverts tend to be more energetic, they should procrastinate less. In terms of causation, extraverts are more outgoing by definition and this should result in being increasingly involved in activities. Consequently, extraverts may overextend themselves by taking on new tasks prematurely, forcing the delay and the finish of other responsibilities. In keeping with this paradox, there are results that support both sides. Initially, evidence suggests that extraversion is irrelevant to procrastination. As Table 5 indicates, its average correlation is -.05 (K=14). On the other hand, results are significantly different (R2=.827, F(1,11)=52.75, p<.001) if we analyze the EPQ (Eysenck & Eysenck, 1975) separately. Impulsiveness is strongly associated with the EPQ’s extraversion (Pearson, 1990), more strongly than with other extraversion measures (Watson & Clark, 1997). With the EPQ, the average correlation is .43 while for the remaining measures it is -.10. Consequently, it does appear that the EPQ is emphasizing the impulsivity and sociability aspects of extraversion, while the remaining measures underscore its energy component. Also of note, McCown et al. (1989), using principal components analysis, describe a type of procrastinator as extraverted and outgoing. Similarly, Briody (1980), Froelich (1987), Haycock (1993), and Strongman and Burt (2000) all indicate that a common distraction that facilitates procrastination is social activities with friends. The Nature of Procrastination 37 Positive Affect. Positive affect should be negatively associated with procrastination. Those high on it tend to have less negative affect and more energy, two mutually supporting relationships. Consequently, positive affect is a more unified construct than extraversion and should give more consistent results. Accordingly, the observed mean correlation is -.22 (K=9) and the credibility intervals do not pass through zero. Impulsiveness. Where trait anxiety is perceived as representing the “behavioral inhibition system” or BIS, impulsiveness is primarily seen as representing the “behavioral activation system” or BAS (Pickering, Corr, Powell, Kumari, Thorton, & Gray, 1997). The BAS acts to motivate people in their pursuit of rewarding experiences and is a necessary cognitive component for proper functioning. However, an overactive BAS should result in characteristics such as rapid decisionmaking and shorter attention spans, which in turn may increase procrastination. Impulsive people may be more likely to procrastinate as they are likely beset with desires of the moment and focus their attention upon them (Blatt & Quinn, 1967). Given that thoughts of the future do not weigh heavily in their decisions, they often end up pursuing immediate gratification, neglecting or ignoring longer-term responsibilities. Evidence suggests that it does play a role. As reviewed in Table 5, the average correlation between procrastination and impulsiveness is .38 (K=16). Other research using related criteria is supportive. Procrastinators tend not to have a future temporal orientation (Lasane & Jones, 2000; Specter & Ferrari, 2000), and tend to dislike structure or routine (Somers, 1992). Also, they tend not to be stimulus-screeners (Lay, 1987). Non-screeners are more sensitive to pleasantness of tasks, and thus more likely to be impulsive. The Nature of Procrastination 38 Qualitative analysis of procrastination also indicates that typically the decision to procrastinate is impulsive and unplanned (Quarton, 1992). Distractibility. It has long been noted that attention is critical to self-control. Sigmund Freud (1923/1961) and William James (1890) speak to it and other more recent prominent researchers such as Austin and Klein (1996), Simon (1994), and Kuhl (2000) maintain this view. By way of an explanation, Klinger (1996, 1999) indicates that changes in flow of thought are preceded by an emotionally arousing cue. Consequently, management of distracting cues could facilitate procrastination prevention so that one either fails to encode these cues or limits their processing so that they are not fully valued. Results firmly support the importance of distractibility. Its average correlation is extremely strong and consistent at .47 (K=12). Also, Haycock (1993) identified the availability of distractions as one of the top reasons contributing to procrastination. Sensation-seeking. Sensation seeking, like impulsiveness, is also interpreted as the result of an overactive BAS. People high in this trait are easily bored and long for excitement, and thus they may intentionally put off work to feel the tension of working close to a deadline. However, their delays may be more purposefully planned than the purely impulsive and thus the rationality of this strategy, and consequently whether it should be considered procrastination, is debatable. Feasibly, this tactic could actually add significant pleasure and increase performance (Sommer, 1990; Revelle, 1997), and without it, work could become tedious and slogging. However, Ainslie (1992) argues that this habit may also become addictive, resulting in ever-increasing delays as we begin to relish ever-increasing risks. Ultimately, sensation-seekers may find that their pleasure has been bought with substantially diminished performance and long-term regret. The Nature of Procrastination 39 Evidence suggests that some procrastination is motivated by sensation-seeking, but not very much. As Table 5 summarizes, the average correlation with procrastination is .18 (K=9). An additional finding suggesting sensation-seeking’s marginal importance is from Kachgal et al. (2000) and Solomon and Rothblum (1984). They extracted a risk-taking dimension by examining the reasons for procrastinating. It was not well endorsed with only 6.4% of students responding positively to its most popular item, “Looked forward to the excitement of doing this task at the last minute.” Likewise, Froehlich (1987) found that one of the lowest rated reasons for procrastinating was, “I like the excitement and challenge of doing things at the last minute.” Disagreeableness: Rebelliousness and Hostility According to the clinical literature (Burka & Yuen, 1983; Knaus, 1979), rebelliousness, hostility, and disagreeableness are thought to be major motivations for procrastination. For those with these personality traits, externally imposed schedules are more likely experienced as aversive, and thus avoided. Also, by delaying work and starting it on one’s own schedule, autonomy is reasserted. The possibility of this etiology has led to the development of paradoxical treatments, where people are directed to procrastinate and by rebelling against this directive, start work early (e.g., Mulry, Fleming, & Gottschalk, 1994; Shoham-Salomon, Avner, & Neeman, 1989). Empirically though, results are significant but extremely weak. Kachgal et al. (2000) and Solomon and Rothblum (1984) did extract a dimension titled “Rebellion against Control” when examining reasons for procrastinating. However, its most popular item “You resented people setting deadlines for you,” was endorsed by under 5% of respondents.7 Meta-analytically, the 7 Of note, Rawlins (1995) found that this was a more popular reason for very young adolescents, with 26% highly endorsing this item. Also, Galué (1990) and Aldarando (1993) extracted procrastination dimensions similar to rebellion, that is “Autonomy” and “Passive-Aggressive” respectively. The Nature of Procrastination 40 average correlation is below .16 (see Table 6). Given the diversity of the measures, they are reported separately despite not being significantly different (F(2,26)=2.51, p=.10). Openness to Experience: Intelligence/Aptitude Openness to experience is sometimes referred to culture, intellect, or need for cognition. As McCrae (1996) describes it, “Openness is a broad and general dimension, seen in vivid fantasy, artistic sensitivity, depth of feeling, behavioral flexibility, intellectual curiosity, and unconventional attitudes” (p. 323). Also, of the big-five personality traits, it shows the strongest relationship with intelligence and scholastic aptitude (Beier & Ackerman, 2001), which are consequently summarized here. There have yet to be any direct hypotheses between openness or intelligence and procrastination and accordingly, results do not suggest there is any. Openness to experience shows a scant correlation of .06 (K=10) while for intelligence/aptitude, it is even lower at .02 (K=12). Conscientiousness: Self-Control, Organization, Achievement Motivation, & Self-Regulation The connection between conscientiousness and procrastination is very strong. Ones and Viswesvaran (1996) summarize much of work done on conscientiousness, noting that people high in this trait are described as planful, organized, industriousness, persistent, goal-directed, and self-controlled. Consequently, conscientiousness has links to procrastination similar to that of extraversion and positive affect, due to the commonality between healthy levels of energy and industriousness as well as between impulsiveness and self-control. However, conscientiousness’ connection to procrastination goes well beyond this, partly because the two constructs show considerable overlap. At a descriptive level, it is difficult to see procrastinatory behavior as anything but low conscientiousness. For example, Costa and McCrae (1992) describe those high The Nature of Procrastination 41 in this trait as “sensible and rational in making decisions” (p. 25), while those low in it as “more lackadaisical in working towards their goals” (p. 16). In addition, Ones and Viswesvaran’s (1996) general theory of conscientiousness suggest that conscientiousness is associated with several process mechanisms that should lessen procrastination. First, the conscientious should spend more time on the tasks, meaning that less delay must necessarily be more likely. Second, they persist in pursuing their goals, meaning that they are again less likely to put off tasks when faced with temptations or obstacles. Third, they avoid counterproductive behaviors, which procrastination should represent at times. Conscientiousness. Considerable research has been conducted connecting conscientiousness to procrastination. Since this trait, out of all those examined, has provided the most consistent results and the largest correlations with procrastination, it warrants a close examination. Several studies have shown that there was some connection between procrastination and competitiveness or super-ego strength (Effert & Ferrari, 1989; Wessman, 1973). However, only relatively recently has this been done explicitly with researchers administering both self-report measures of procrastination and detailed assessments of conscientiousness from the five-factor model of personality. As Table 6 indicates, the average correlation is -.64 (K=15). Of note, Scher and Osterman (2002) found a virtually identical relationship when using other- instead of selfreports. In addition, once conscientiousness had been partialled out of the correlations between procrastination and the other four trait factors, virtually none of them reached either practical or statistical significance (Johnson & Bloom, 1995; Schouwenburg & Lay, 1995). Also, Schouwenburg (1995) factor analyzed several measures related to procrastination, The Nature of Procrastination 42 conscientiousness, and neuroticism. The procrastination and conscientiousness variables loaded together, while those related to neuroticism loaded on a separate dimension. Self-control/Self-discipline. Focusing on self-control/discipline, it primarily reflects organization and energy and does indeed seem to be the deciding component of procrastination. By definition, self-discipline is closely related. As Milgram and Naaman (1996) state in a scholarly fashion: “The ability to regulate one’s behavior in the service of one’s professed goals and in the face of cues that elicit competing dilatory responses is an asset, and the antithesis of the maladaptive coping patterns associated with chronic procrastination” (p. 682). More simply, the Costa and McCrae’s (1992) self-discipline scale contains several items strongly reminiscent of procrastination itself (e.g., “I waste a lot of time before settling down to work”). Researchers have studied self-discipline using a wide variety of self-control, organization, and planning scales. Results, as reported in Table 6, indicate an average correlation of -.53 (K=15). However, some measures seem to be more strongly connected to procrastination than others. Focusing on those that specifically indicate self-discipline, which is very central to the self-control construct, we find results are stronger, showing an average correlation of -.66 (K=8), though not significantly so (F(1,13)=2.03, p=.18). Other supporting research includes Schouwenburg’s (1995) factor analysis, which suggests that self-discipline may be equivalent to trait procrastination or that it is at least a proximal cause of procrastination behavior. Similarly, procrastinators tend to choose short-term benefits over long-term gains, reflecting a core component of poor self-regulation (Tice & Baumeister, 1997). Finally, one can also add much of the previously mentioned research The Nature of Procrastination 43 pertaining to impulsiveness. Impulsiveness is often considered to be the opposite pole of the selfdiscipline facet (Ones & Viswevaran, 1996). Organization. Organization refers to a collection of scales that deal with ordering, structuring, and planning one’s life. It can reduce procrastination in several ways, such as by assisting goal setting (Locke & Latham, 1990), gap reflection (Oettingen, 1996) or automatic habits that preclude the decision to do otherwise (Bargh & Barndollar, 1996). As expected, results do indicate that organization is antithetical to procrastination, with an average correlation of -.40 (K=16). Achievement motivation. Another aspect of conscientiousness that is strongly related to procrastination is achievement motivation. Those high in achievement motivation set more difficult goals for themselves and often enjoy performance for its own sake (Costa & McCrae, 1992; Spence & Helmreich, 1983). One way it may affect procrastination is by allowing work to be intrinsically engaging and thus necessarily less aversive. Accordingly, one of the first findings in the field of procrastination is that procrastinators tend to have lower achievement drives (Lum, 1960). Also supportive are the results already obtained regarding locus of control, a broad indicator of intrinsic motivation (Deci & Ryan, 1985). As meta-analytically summarized, need for achievement or intrinsic motivation has an average correlation of -.40 (K=27). Results dealing specifically with need for achievement suggest an even higher correlation of -.47 (K=14). In addition, Lay’s (1987) efforts in typology extracted a type of procrastinator that he termed the “underachiever.” Self-Regulation. The Nature of Procrastination 44 Self-regulation refers a collection of skills that deal with better managing one’s own behavior. They have a quasi-trait status, being learnable but also strongly related to the personality trait of self-control (Rachlin, 2000). Several general measures of self-regulation have been administered, and though they do not reveal which specific mechanisms might best reduce procrastination, they do support that it is controllable. The average correlation is -.54 (K=7). Aspects of Procrastination As defined, procrastination is composed of several elements, especially the following three sub-groups: I) Intention-Action Gap, II) Mood, and III) Performance. The intention-action gap refers to whether procrastinators are less likely to follow-up on their work plans. Procrastinators naturally should have a larger discrepancy between what they plan to do and their actual behavior. Mood and performance assesses both subjective and objective utility respectively. Procrastinators should, in the long-term, have a tendency to feel more discomfort and/or to perform more poorly. With the exception of mood, all these findings are summarized meta-analytically in Table 7. Intention-Action Gap In procrastinating, some researchers suppose that delaying is not only irrational, but also unintentional. They believe procrastinators do not purposefully put off their chores, but do so to the contrary of their original intent – an “is” vs. “ought” scenario. If this is true, it is of some importance as it confirms the basic nature of procrastination: it deals with intended tasks. Procrastination does appear to be often involuntary, with procrastinators typically agreeing with the statement, “No matter how much I try, I still put things off” (r=.64; Stainton, 1993). Other research supports this assertion. The Nature of Procrastination 45 To begin with, several studies have compared procrastination with self-reported work intentions over several time periods. The two variables are almost completely independent, and thus procrastinators usually intend to work as hard as anyone else or harder (r=.06, K=6). Given this typical lack of difference, researchers have focused on how consistently procrastinators act upon these intentions. One way this has been assessed is by administering procrastination measures in conjunction with a self-report intention-action discrepancy measure, such as Kuhl’s (1994) state-oriented hesitation scale or Schouwenburg’s (1992) dilatory behavior scale. As Table 7 indicates, dilatory behavior correlates on average .50 with procrastination (K=14). In addition, several researchers investigated this topic by collecting information on both intended and actual work habits. Once both self-report and observed measures have been gathered, it is relatively straightforward to calculate an intention-action gap and observe its relationship with procrastination. As Table 7 indicates, the average correlation was .29 (K=6). Of note, the size of this gap is highly contingent on the time separating intention and action. It increases the further ahead procrastinators plan their actions (i.e., one week versus two; Steel, 2002b). On the other hand, the gap decreases and even reverses as the deadline begins to loom (Steel et al., 2001). In the final hour, it is the procrastinator who is doing more work than intended. Mood It has long been suggested that procrastination impacts mood, especially state anxiety. Since its psychological beginnings, procrastination has been viewed as a way of temporarily evading anxiety that unfortunately becomes compounded when later faced (Mayers, 1946; Solomon & Rothblum, 1984). In this way, procrastination may initially improve mood though later it may worsen it. The empirical evidence concerning mood is less than definitive though. The Nature of Procrastination 46 Since mood changes, procrastinators may feasibly feel remorse for their inactions at any time, perhaps even after the experimental session or academic semester has ended. Consequently, if we just tested more frequently or possibly over longer time periods, a previously undetected mood difference could easily appear. On the other hand, moods have the potential to show a relationship with procrastination where none may exist. Specifically, those in poorer moods are often more likely to indicate they procrastinate regardless of their actual behavior (Carver & Scheier, 1990; Sarason et al., 1990; Stainton et al., 2000; Steel et al., 2001). Perhaps because of these research complications, the evidence regarding the relationship between procrastination and mood is very mixed and meta-analytic summary does not appear to be advisable. Supporting the importance of mood, Tice reports that procrastination could be motivated by mood repair (Tice & Bratslavsky, 2000; Tice, Bratslavsky, & Baumeister, 2001). Students who were experimentally manipulated into an unhappy mood were more likely to try lifting their spirits before practicing for an informal math test. However, the long-term success of this strategy seems doubtful, with Pychyl (1995) finding a correlation of .46 between project guilt and project procrastination. More support for the importance of mood comes from researchers who have used repeated measures of state anxiety or mood over the duration of an academic course. Student procrastinators tend to be more anxious across the entire semester (Rothblum, Solomon, & Murakami, 1986),8 and tend to experience less stress early on but more stress later on, and more stress overall (Tice & Baumeister, 1997). This last finding has been replicated in part, where the relationship between procrastination and state agitation (i.e., anxiety) was observed, but only as an increase at the course end (Lay & Schouwenburg, 1993). Similarly, employee procrastinators The Nature of Procrastination 47 tend to continue worrying about their work after leaving the office (r=.31; Van Eerde, 1998). Finally, Froelich (1987) and Haycock (1993) asked students retrospectively how they felt after procrastinating, with over 80% of the responses categorized as negative. Other researchers, though, indicate no significant relationship between mood and procrastination. When the state anxiety of students was examined just before and then during exams, no relationship between it and procrastination was detected (Lay, Edwards, Parker, & Endler, 1989; Lay & Silverman, 1996). Also, student procrastinators did not become more agitated or dejected after recollecting their study habits, indicating that their relative lack of work was not particularly stressful to them (Lay, 1994). Similarly, a study using experience-sampling methodology over a five-day period, did not find any significant relationship between procrastination and negative mood (Pychyl et al., 2000), despite a strong guilt relationship (r=.42). Finally, countering Lay and Schouwenburg’s (1993) results, Somers (1992) found no significant association between mood and procrastination on the final day of class. Performance Most people would intuitively guess that procrastination impacts performance. People who leave things closer to the final hour simply should have less time to prepare. In addition, given that procrastination is closely related to conscientiousness and that conscientiousness is a consistent predictor of performance (Barrick & Mount, 1991), we would expect procrastination to demonstrate similar properties. Alternatively, some people report using procrastination as performance enhancing strategy, that it helps marshal one’s resources to cope with an oncoming deadline (Chissom & Iran-Nejad, 1992; Tice & Baumeister, 1997). In the words of Sommer (1990): “The students mobilize their full intellectual and physical prowess. With nonstop 8 Unfortunately, this study is less than decisive as they operationalized procrastination as delay in conjunction with negative affect, and thus virtually guaranteeing this effect. On the other hand, Beswick et al. (1988) report that the The Nature of Procrastination 48 perspicuity they swoop down on the material, mold it, master it, and deposit it in the nick of time” (p. 6). Results, as summarized in Table 7, indicate a weak but negative relationship between GPA and procrastination. The average correlation was -.14 (K=15). As the credibility interval indicates, procrastination is usually harmful, sometimes harmless, but never helpful. Other performance criteria confirm the dangers of procrastination. Consistently, it shows negative correlations with course GPA, final exam scores, and assignment grades (see Table 7). Moving away from academic indicators, Elliot (2002) investigated the self-reported impact of procrastination on people’s health and financial well-being. The negative impact of delays on health and trait procrastination was -.22, while for finances it was -.42, both statistically significant. Similarly, Mehabrian (2000) found a significant correlation of -.26 between career/financial success and procrastination. Notably, evaluation of success was based on peernot self-report. Demographics It is unlikely that any personality trait is evenly distributed throughout a population. Fortunately, researchers have consistently provided the information needed to evaluate four possible demographic moderators of procrastination: age, sex, year, and nation. Results are based on aggregating individual level correlations but also include an examination at a group level. Means levels of procrastination were reported for 121 samples, of which 9 where based on unique scales. The remaining 112 used a form of the AIP, API, DPQ, GPS, PASS, and the TPS (see Table 1) and the analyses are confined to this subset. These procrastination measures were converted into a common five-point metric, dummy coded, and then entered first into a WLS (weighted least squares) multiple regression analysis. The subsequent step was to enter the variable of interest (e.g., age). Of note, though individual-level data tends to replicate at the “problem” versus “anxiety” versions of their inventory correlated at .89. The Nature of Procrastination 49 group-level (Steel & Ones, 2002), this is not a necessary outcome (Ostroff, 1993; Van Raaji, 1984). Meta-analytic results are summarized in Table 7. Age People should procrastinate less as they age and learn. As O’Donoghue and Rabin (1999b) conclude, “many people procrastinate only moderately do so not because of intrinsic self-control, but because they have developed schemes to overcome procrastination” (p. 807). It is evident that we can learn how to avoid procrastination. Ainslie (1992) as well as Baumeister et al. (1994) review considerable research showing people tend to procrastinate less with repeated practice. Initial, uncorrected results are reported in Table 7, showing that indeed procrastination appears to decrease with age (r=-.15, K=14). However, these results suffer from extreme range restriction. Correcting with a standard deviation based on those of age 12 and up (i.e., σ = 19.5 years; US Census Bureau, 2000)9, the findings become extremely strong. Those in their final years, perhaps because of a universal and unavoidable deadline, are putting off very little. The effect of age on procrastination was also analyzed on a group level. The results, however, were not significant, (R2 = .02, F(1,105) = 2.14, p = .12). This failure to replicate may be because range restriction was still intense at the group level, where the average mean age was 22.3 and the standard deviation was 4.38. Sex The expected influence of sex on procrastination is difficult to predict. Previous investigation into gender differences and the related construct of impulsiveness have found mixed results (Feingold, 1994). Men may score higher, lower, or the same as women depending on the measure. After correcting for uneven splits, men do appear to procrastinate only slightly 9 This standard deviation differed trivially from that of three other countries considered: Canada, Netherlands, and Israel. The Nature of Procrastination 50 more than women (r=-.09, K=35). At a group level, there were 101 samples that reported the percentage of men that comprise the group. Like age, though, the results were not significant at this higher level of analysis (R2 = .02, F(1,94) = 1.62, p = .21). Year As mentioned at the start of this paper, Kachgal et al. (2001) believe procrastination is on the rise. Since cohort effects in personality do appear to exist (e.g., Twenge, 2000) and since procrastination is susceptible to environmental influences (e.g., task aversiveness), this is a definite possibility. Publication year for the reported samples spanned almost 25 years, from 1978 to 2002. Using publication year to indicate sample year, two analyses were conducted. First, after controlling for the procrastination measure, year of publication still has a significant effect (R2 = .03, F(1,94) = 3.96, p < .05). Second, if age and sex are also controlled, the effect of year intensifies (R2 = .06, F(1,92) = 7.29, p < .01). As suspected, people are reporting more procrastination. Nation That nations differ in mean personality traits has been well established (Steel & Ones, 2002). Though proper cross-cultural comparison requires a considerable foundation to ensure measurement equivalence, a preliminary investigation is possible. Approximately 88% of all procrastination studies have taken place in two very comparable countries (i.e., minimal translation concerns): Canada and the United States. Both nations’ procrastination are indistinguishable (R2 = .00, F(1,91) = .17, p = .69). Summary Efforts to understand procrastination have been intensive, with hundred of studies covering a wide range of situations and variables. As the credibility intervals in Table 3 through The Nature of Procrastination 51 7 indicate, many of these findings generalize, a surprisingly strong result given the potential conceptual variability in the tests used to assess procrastination. Of these results, task nature, self-efficacy, impulsiveness and distractibility, conscientiousness and its facets, and the intention-action gap demonstrate the strongest, clearest, and most steady relationships. On the other hand, several characteristics that were thought to give rise to procrastination, in particular trait anxiety and sensation seeking, demonstrate weak relationships. Also, self-handicapping, despite its strong empirical relationship, is conceptually at odds with procrastination. Though people may self-handicap by delaying, the delay is initiated purposefully and thus cannot be easily considered irrational. It is uncertain if self-handicappers truly expect to be worse off. A Theory of Procrastination Procrastination should be explainable by motivational theories. Classically, Kanfer (1990) subdivides motivational research into: direction of behavior (i.e., what a person does), intensity of action (i.e., how hard a person works), and persistence (i.e., how long a person works). Alternatively, Campbell (1999) uses the analogous and thus equally appropriate descriptors of: choice to perform, choice of effort level, and choice of duration of effort. Procrastination is a motivational problem in that it represents choosing to perform a task that is less than optimal, that leads to inferior well-being or performance. To determine what motivational theory explains procrastination best, meta-analysis fortunately can provide an excellent foundation (Miller & Pollock, 1994). Specifically, theory validation typically proceeds by corroborating expected effects with that observed (Watkins, 1997). As uncovered here, there are several strong and unambiguous findings regarding procrastination. It increases with the aversiveness and the temporal distance of the task. It is strongly related to the personality traits of self-efficacy, impulsiveness, and distractibility as well The Nature of Procrastination 52 as to conscientiousness’ facets of self-control and need for achievement. Finally, it appears to be due to people failing to act upon their intentions (i.e., dilatory behavior) rather than not intending to act at all. There are two theories of procrastination that speak to these effects: expectancy and hyperbolic discounting. However, neither of them alone can fully explain these observations, suggesting that a hybrid of them may be appropriate. Expectancy Theory Expectancy theory or Expectancy x Value (E x V) theory represents an extensive family of individual formulations. Vroom (1964) first introduced the notion to industrial organizational psychology, but it has an earlier history in the cognitive field (e.g., Rotter, 1954) that in turn can be predated by economic investigations under the rubric of subjective expected utility (Bernouli, 1738 as cited in Savage, 1972/1990). In essence, E x V theories believe that a process akin to rational gambling determines choices among courses of action. For each of your options, you make two considerations: i) what is the probability that this outcome would be achieved, and ii) how much do you value the expected outcome. You multiply these two components together and the action that is appraised as largest is the one you likely pursue. Specifically: Utilityi Ei Vi (1) These two components, E and V, should relate to procrastination in a conventional manner. When either of them diminishes, the likelihood of pathological delay should increase. Results corroborate this prediction. Expectancy can often be interpreted as self-efficacy, that is one’s judgment about one’s own competence (Bandura, 1997; Locke & Latham, 1990). Value, in turn, is intimately related to need for achievement (Atkinson, 1964; McClelland, 1985; Ronen, 1994). As expected, both self-efficacy and need for achievement show strong negative correlations with procrastination. Also, this motivational model is consistent with the observation The Nature of Procrastination 53 that procrastination increases with the aversiveness of tasks, and that it is more strongly connected to global self-esteem (i.e., self-competency linked) than social self-esteem. In addition, expectancy theory indicates that need for achievement’s relationship with procrastination should decrease when other motivational needs start to rise in strength. Of note, this is also consistent with Kuhl’s (1994) theory of action control. As discussed by Blunt and Pychyl (1998), they conclude that procrastination may be when a given intention fails to successfully compete against other impulses (i.e., “action tendencies”). Empirically, Schneider and Green (1977) review considerable literature indicating that this is likely the case. Also, Cantor and Blanton (1996) review work that indicates “a person who is high in many needs may be more prone to immobilization, because of the heightened likelihood that competing cues will be of equal strength” (p. 346). However, a major limitation to E x V models is that they are episodic, and thus it is more difficult for them to account for behavior over time and events (Kanfer, 1990). More directly, Luce (1990) notes that “quite clearly any empirical realization of a decision tree has a strong temporal aspect…” and the failure to include time “…is a clear failing of the modeling” (p. 228). In particular, it is difficult for E x V models to differentiate task avoidance from task delay. This limitation may partially explain Van Eerde and Thierry (1996) meta-analytic finding that they predict behavior (i.e., performance) over time often rather weakly and significantly less well than one’s intention to perform. Hyperbolic Discounting An alternative theory of motivation is picoeconomics or hyperbolic discounting, and it has been used very effectively to describe and to explain procrastination (e.g., Ainslie, 1975, 1992; Ainslie & Haslam, 1992; Lay & Schouwenburg, 1993; Mazur, 1996, 1998; O’Donoghue The Nature of Procrastination 54 & Rabin, 1999; Pychl et al., 2000). Curiously, its acceptance is more widespread in economics, being almost entirely ignored or overlooked in the general field of motivation (e.g., Franken, 1994; Kanfer, 1990; Kleinbeck, Quast, Thierry, Häcker, 1990; Mitchell, 1997). The essentials of this theory will first be outlined, followed by considering its consistency with the empirical results summarized here. Ainslie (1992), under the title of Picoeconomics, and Ainslie and Haslam (1992), under the title of Hyperbolic Discounting, discuss a theory that helps to account for choice of behavior over time. The theory draws support from a variety of research literatures, including sociology, social psychology, psychodynamic psychology, and in particular, behaviorist psychology as well as economics. In its basic form, the theory is simple. Essentially, people are beset with choosing among a variety of possible rewarding activities. In choosing among them, there is an innate tendency to inordinately undervalue future events. Procrastination becomes likely, as we tend to put off tasks leading to distant but valuable goals in favor of ones with more immediate but lesser rewards. Inevitably though, time marches forward and as the once future events loom ever closer, we see their value more clearly. Eventually, we experience regret if we have irrationally put-off pursuing more valuable goals to the extent that they can no longer be realistically achieved. Going beyond this qualitative description, hyperbolic discounting tries to mathematically express the effects of temporal discounting. Summarizing the efforts from the behaviorist and the economic perspectives, Ainslie (1992) notes several attempts to provide an accurate equation. The simplest and most widespread version of the matching law is likely Mazur’s (1987) equation10: 10 Several other attempts have been made at further refining this equation, but with no established successes. For example, explorations into using other mathematical expression (e.g., Logue, Rodriguez, Pena- The Nature of Procrastination 55 Utilityi Vi Z i D (2) V represents value, essentially identical to E x V models. D indicates delay, how long we must wait to receive the payout. Since delay is in the denominator of the equation, the longer the delay, the less valued the course of action is perceived. refers to the person’s sensitivity to delay. The larger becomes, the greater is the sensitivity. Z is a constant derived when rewards are immediate, often set at 1. It prevents the equation rocketing towards infinity under periods of small delay and thus, in Shizgal’s (1999) terminology, can be considered the determinant of “instantaneous utility.” In addition, the reciprocal of this equation can be used to predict preferences among punishers instead of rewards (Mazur, 1998); people prefer distant punishers to those of a more instant nature. Since hyperbolic discounting, like expectancy theory, maintains a Value term, it is also consistent with findings regarding task aversiveness and need for achievement. However, its addition of a delay term permits it to be consonant with procrastination’s temporally based findings as well as the intention-action gap. To begin with, the timing of tasks is captured directly through hyperbolic discounting’s delay term. As expected, we are more likely to pursue tasks that offer speedy rewards than those with more distal resolution. The individual difference variables of distractibility and impulsiveness or self-control are all associated with , a person’s sensitivity to delay (Ainslie, 1975; Ostaszewski, 1996, 1997). As increases, so does the impact of any perceived delay. Consequently, impulsive people should be more likely to be motivated Correal, & Maruo, 1984), particularly exponential functions, but they tend not to be as accurate (Green, Myerson, & McFadden, 1997; Kirby & Marakovic, 1995), though are still favored in economic circles due to their close resemblance to a purely rational discount model. There, in economics, this phenomenon is studied under the rubric of time preference or implicit interest rate (Antonides, 1991). The Nature of Procrastination 56 by immediate repercussions rather than distal ones and thus should procrastinate more by pursing a strategy of short-term hedonism. In addition, hyperbolic discounting explicitly predicts the observed intention-action gap (e.g., Lowenstein & Elster, 1992; Read, 2001). When choices are made regarding distal courses of action, the effect of delay is minimal. Our decisions, consequently, tend to be more rational, reflecting just the magnitude of reward. As time progresses, however, delays shorten and their effects become more pronounced. Because of this, our original intentions can suddenly change and we find ourselves pursuing smaller but more readily realizable rewards. Also, Green, Fry, and Myerson (1994) found that temporal discounting tends to decrease with age, just as procrastination does. However, hyperbolic discounting does not easily account for the strong relationship that self-efficacy demonstrates with procrastination. This shortcoming could be rectified, though, if hyperbolic discounting could be integrated with expectancy theory. Integration Combining expectancy with hyperbolic discounting should improve both theories. As mentioned, a major limitation to expectancy theory is the inability to consider changes over time (Kanfer, 1990; Luce, 1990), while for hyperbolic discounting, it is the failure to incorporate expectancy itself. Other researchers have already proposed various integrations of expectancy theory with some hyperbolic time-discounting (Lowenstein & Prelec, 1992; Rachlin, 1990; Schowenburg & Groenewoud, 1997). However, virtually no empirical or formal work has followed up these theoretical suggestions. Fortunately, there is a strong precedent justifying a straightforward combination. Consider the original matching law, upon which the present hyperbolic discounting is now based: The Nature of Procrastination 57 Utility Rate Amount Delay (3) These terms reflect the original behaviorist understanding of motivation. Later, when this equation was translated into cognitivist terms and subjective evaluation was emphasized, Amount was described as Value, but Rate was dropped since it can partially be expressed in terms of delay alone (i.e., over repeated trials, rate indicates average delay). Rate refers to the frequency that actions lead to rewards or, alternatively, the probability of acquiring the expected outcome. By returning Rate to the equation and also expressing it in terms of subjective evaluation, that is expectancy, hyperbolic discounting and expectancy theory can be efficiently partnered. The final equation should be: Utilityi Ei Vi Z i D (4) Of course, other modifications can be argued. From expectancy theory, for example, Vroom (1964) broke down expectancy into two components: expectancy and instrumentality. Expectancy, in this case, refers to whether you can successfully complete the intended course of action. Instrumentality refers to whether rewards would be forthcoming, given you were successful. Research indicates that this modification is actually detrimental to predicting behavior rather than helpful (Van Eerde & Thierry, 1996). Still, other possibly fruitful refinements have been proposed, including terms that account for resource allocation (e.g., Kanfer & Ackerman, 1989; Naylor, Pritchard, & Ilgen, 1980), future orientation (e.g., Raynor & Entin, 1982), and losses versus gains (e.g., Tversky & Kahneman, 1992). Regardless of the individual formulation, E x V is the core aspect. An Example of Procrastination The Nature of Procrastination 58 To understand how expectancy and hyperbolic discounting impact procrastination, it helps to stress that tasks are implicitly in competition with one another for expression. When there is but a single option, it will always have the highest utility by default and thus will always be pursued. However, when there are multiple prospects, then Expectancy and Value become critical. A goal or task that is extremely high on these elements should maintain a high utility, even if it is significantly delayed and discounted. Consequently, procrastination is unlikely as it should be motivationally dominant. Alternatively, tasks with lackluster qualities are more easily superceded and thus more susceptible to procrastination. Regarding discounting, its effects are relatively clear. Procrastination is more likely to occur when the target task’s rewards rather than costs are delayed. To illustrate these characteristics, the following prototypical example is put forth – the college student’s essay paper. Though the written assignment is given at the beginning of a semester, often it is ignored until the last few weeks or even scant days. This is unsurprising given that we pursue whatever course of action that has the highest present level of utility. For many students, writing an essay paper may often be an activity that is neither tackled with confidence (i.e., low Expectancy) nor intrinsically rewarding (i.e., low Value). Rather, the only recompense experienced is that of achievement, not felt until the end of the semester or perhaps even later when grades are posted. Compounding the matter, social activities are available that are intrinsically and likely enjoyable; there is no substantive delay in their pursuit and their rewards. Consider a college student who has been assigned an essay on September 15th, the start of a semester, due on December 15th, the course end. This student likes to socialize but he likes to get good grades even more. Figure 1 maps the changes in expected utility for him over the course The Nature of Procrastination 59 of the semester regarding his two choices, studying vs. socializing. Since socializing’s positive component is perpetually in the present, it maintains a uniformly high utility evaluation. For writing, its reward is temporally distant initially, diminishing its utility. Only towards the deadline does the effects of discounting decrease and writing becomes increasingly likely. In this example, the switch in motivational rank occurs on December 3rd, leaving just 12 days for concentrated effort. During the final hour, it is quite likely that earnest but empty promises (i.e., intentions) are made to start working earlier next time (see Lay et al., 1989; Stainton, 1993). Summary Integrating expectancy and hyperbolic discounting theories provides a coherent explanation of procrastination that reflects the consistent and strong results found here. Consequently, we would likely procrastinate an important task when we excessively discount its distant rewards but not its imminent punishers. In addition, procrastination can be exacerbated when we are surrounded by easily realizable temptations, options with smaller but more quickly obtainable benefits. Some researchers have already interpreted procrastination in terms akin to this (e.g., Ainslie, 1992; Lay & Schouwenburg, 1993; O’Donoghue & Rabin, 1999). Other researchers, though not explicitly using temporal discounting, have still described procrastination similarly. Ferrari and Emmons (1995) emphasize procrastinators’ need for immediate pleasure and, later, Ferrari and Beck (1998) suggest that “although an effective coping strategy in the short-term, may be an emotionally expensive and maladaptive strategy in the long-term” (p. 536). Also, Knaus (1973) refers to procrastinators as short-range hedonists, while Tice and Baumeister (1997) characterize it as “a self-defeating behavior pattern marked by short-term benefits and long-term costs” (p. 454). Future Research The Nature of Procrastination 60 The topics of research available to fully explore procrastination and its underpinnings are still extensive. The motivational literature has tended not to incorporate the notion of temporal discounting, evidently key to understanding procrastination, and thus can only offer limited contributions. Consequently, there is much interesting work to be done in the scientific fundamentals of description and control. Regarding description, several individual difference variables that were thought to give rise to procrastination proved to have low or practically non-significant correlations. However, clinical practice and self-reports do indicate some may still remain as contributors to procrastination. Likely, these variables represent one of several avenues by which tasks are made aversive. For example, those who fear failure abhor evaluative events that lack the certainty of success, while those who are rebellious despise externally imposed deadlines. Whether these traits translate into chronic procrastination depends on a host of external variables, including: people’s innate impulsiveness and need for achievement, the availability of temptations, and the frequency of encountering these tasks they particularly dread. Future research, then, should not immediately dismiss these traits, but rather determine if they are more distally related. They should be important, but only for a subset of the population and only when their lives are confined to specific situations. Given that the reasons underlying why people procrastinate may be multifaceted, we need a diagnostic procedure that identifies the most promising and pliable junctures in order to lay the foundation for treatment. As theory indicates, there are a variety of reasons why people might irrationally delay a task. As mentioned, they may be surrounded by easily available temptations. They may be excessively impulsive. The task itself may be seen as excessively risky The Nature of Procrastination 61 or aversive. Each of these possibilities demands a very different response, and until we can fully assess people’s procrastination etiology, our efforts at helping must necessarily be haphazard. Of particular relevance to diagnosis, there appears to be a connection between brain functioning and procrastination. In a recent review by Skolyes and Sagan (2002), they note: Something in our brains has to give the inner cues that start us doing things, keep us going, and, if need be, change what we are doing. Usually that executive function belongs to our prefrontal cortex. When it is injured, people tend to lose initiative. They may be able to do things, but they don’t get around to it. (p. 45) So far the only investigation of this as a source of procrastination has been a doctorate thesis by Stone (1999), who failed to find a significant effect. Still closer examination is warranted, including that of other promising brain areas. For example, the anterior cingulate has a pivotal role in preventing impulsive behavior and maintaining attention to the task at hand. Regarding control, our traditional treatments for procrastination should be more extensive. Within an industrial-organizational context, it is primarily limited to goal setting and to stress coping (Karoly, 1993; Terry, Tonge, & Callan, 1995). However, there are many other methods of regulation that are largely overlooked or their efficacy only vaguely understood. As an initial example, Galué (1990) and Weymann’s (1988) workplace investigations indicate that the most control over procrastination could be achieved by exploiting environmental contributors. Consequently, we should be able to more easily reduce procrastination by simply adjusting situational aspects, specifically the proximity to temptation and prevalence of stimulus cues. For example, email is definitely a popular avenue of procrastination, with over 90% of college computer users reporting that they use it to irrationally delay (Brackin, Ferguson, Skelly, & Chambliss, 2000). Since its icon is perpetually within the field of view and its access borders The Nature of Procrastination 62 on instantaneous, simply making it less visible or delaying access to it should decrease procrastination. As a form of precommitment, a software option could be available that requires users to reiterate their desire to read their mail before access is given. Any modest delay should be effective by decreasing the utility of trivial emailing and providing additional opportunities for willpower to exert itself. Finally, researchers may choose to apply this expectancy-hyperbolic discounting hybrid to venues other than procrastination. As a general theory of motivation, it should have relevance to a broad range of activities, including addiction, consumer behavior, and aggression. For example, Glomb, Steel, and Arvey (2002) indicate that aggressive behavior can be largely understood in terms of Value and the discounting function of , specifically as the interplay of trait anger and trait impulsiveness. Also, Berkowitz (1997) discusses how the certainty (i.e., Expectancy) as well as the severity of punishment (i.e., Value) inhibits aggression. Similarly, he relates violence to Delay in that, “the strength of the tendency to perform a goal-oriented response (in this case, to inflict an injury) and to avoid performing the action (that is, to inhibit one’s aggression because of the possibility of punishment) increased the closer the organism came to the goal” (p. 202). Conclusion References to procrastination can be found in some of the earliest records available, stretching back at least 3000 years. Looking towards tomorrow, procrastination does not appear to be leaving us anytime soon. On the contrary, it and other problems due to temporal discounting appear to becoming more frequent. In the workplace, problems due to procrastination and lack of self-control appear to be on the rise as jobs are expected to become increasingly unstructured or at least self-structured The Nature of Procrastination 63 (Cascio, 1995; Hunt, 1995). This absence of imposed direction means that the competent worker must create order out of the imminent chaos – he or she must self-manage or self-regulate (Kanfer & Heggestad, 1997). As structure continues to decrease, the opportunity to procrastinate will concomitantly increase. Consumer behavior appears no less susceptible. Examination of credit card purchases revealed about five times as much last-minute Christmas shopping in 1999 as was done in 1991 (“Many Shoppers,” 1999). Furthermore, the virulence and prevalence of distracting temptations, an enabler of procrastination, also appears to be escalating. As a review by Ainslie (1992) indicates, technological advances are speeding the delivery mechanisms for many of our needs. Unfortunately, these mechanisms tend to favor substandard experiences that satisfy these needs only weakly. Due to temporal discounting, more satisfying ventures are put aside in favor of these shallow but more immediate options. For example, there is a tendency to passively engage in vicarious entertainment to the exclusion of almost all other life endeavors. By constantly surrounding ourselves with easily available but inferior options, we have done ourselves a disservice. With Clark (1997) ominously extrapolating that this trend could lead to a dystopia, convenient access to poorer choices is decidedly inconvenient. Unfortunately, this future may be difficult to avoid given the basic nature of procrastination, evidently an outcome of a fundamental feature of our motivational landscape. To combat procrastination and our inherent irrationality, we will often need to implement in advance self-control mechanisms to limit our choices. Though we do have the capacity to use self-correction and can prepare for our inevitable fallibility, the benefits of these self-control mechanisms are necessarily delayed and thus discounted. Ironically, the more susceptible we become to procrastination, the less likely we will execute a cure. The Nature of Procrastination 64 References References marked with an asterisk indicates studies included in the meta-analysis. Abramson, L. Y., Metalsky, G. I., & Alloy, L. B. (1989). Hopelessness depression: A theorybased subtype of depression. Psychological Review, 96, 358-372. Abramson, L. Y., Seligman, M. E. P., & Teasdale, J. D. (1978). Learned helplessness in humans: Critique and reformulation. Journal of Abnormal Psychology, 87, 49-74. Abry, D. A. (1999). A structural model of self-regulatory behavior and college student achievement. (Doctoral dissertation, Florida State University, 1990). Dissertation Abstracts International, 59, 7-A. Ainslie, G. (1975). Specious reward: A behavioral theory of impulsiveness and impulse control. Psychological Bulletin, 82, 463-496. Ainslie, G. (1992). Picoeconomics: The strategic interaction of successive motivational states within the person. New York: Cambridge University Press. Ainslie, G., & Haslam, N. (1992). Hyperbolic discounting. In G. Loewenstein & J. Elster (Eds.), Choice over time (pp. 57-92). New York: Russell Sage Foundation. Aitken, M. E. (1982). A personality profile of the college student procrastinator. (Doctoral dissertation, University of Pittsburgh, 1982). Dissertation Abstracts International, 43 722. Akerlof, G. A. (1991). Procrastination and obedience. American Economic Review, 81(2), 1-19. Aldarondo, F. (1993). A preliminary investigation of a two-motive theory of procrastination. (Master’s dissertation, Mississippi State University, 1993). Masters Abstracts International, 32, 1221. American Psychiatric Association. (1994). Diagnostic and statistical manual of mental disorders (4th ed.). Washington, DC: Author. Anderson, C. J. (2003). The psychology of doing nothing: Forms of decision avoidance result from reason and emotion. Psychological Bulletin, 129, 139-167. Antonides, G. (1991). Psychology in economics and business. Dordecht, The Netherlands: Kluwer Academic Publishers. Arvey, R. D., Rotundo, M., Johnson, W., & McGue, M. (2002). The determinants of leadership: The role of genetics and personality. Unpublished manuscript. Atkinson, J. W. (1964). An introduction to motivation. New York: Van Nostrand. Austin, J. T., & Klein, H. J. (1996). Work motivation and goal striving. In K. Murphy (Ed.), Individual differences and behavior in organizations (pp. 209-257). San Francisco: JosseyBass. Bandura, A. (1986). Social foundations of thought and action: A social cognitive theory. Englewood Cliffs, NJ: Prentice Hall. Bandura, A. (1997). Self-efficacy: The exercise of control. New York: W. H. Freeman & Co, Publishers. Bargh, J. A., & Barndollar, K. (1996). Automaticity in action: The unconscious as repository of chronic goals and motives. In P. M. Gollwitzer & J. A. Bargh (Eds.), The psychology of action: Linking cognition and motivation to behavior (pp. 457-481). New York: The Guilford Press. Barrick, M. R., & Mount, M. K. (1991). The Big Five personality dimensions and job performance: A meta-analysis. Personnel Psychology, 44, 1-26. The Nature of Procrastination 65 Baumeister, R. F., Heatherton, T. F., & Tice, D. M. (1994). Losing control: How and why people fail at self-regulation. San Diego, CA: Academic Press, Inc. Beck, A. T. (1993). Cognitive approaches to stress. In R. Woolfold & P. Lehrer (Eds.), Principles and practice of stress management (2nd ed., pp. 333-372). New York: Guilford. Beck, A. T., & Beck, R. W. (1972). Screening depressed patients in family practice: A rapid technique. Postgraduate Medicine, 52, 81-85. Beier, M. E., & Ackerman, P. (2001). Current-events knowledge in adults: An investigation of age, intelligence, and nonability determinants. Psychology and Aging, 16, 615-628. Berkowitz, L. (1997). On the determinants and regulation of impulsive aggression. In S. Feshbach & J. Zagrodzka (Eds.), Aggression: Biological, developmental, and social perspectives (pp. 187-211). New York: Plenum Press. Bernouli, D. (1738). Specimen theoriae novae de mensura sortis, Commentarii academiae scientiarum imperialis Petropolitanae (pp. 175-192). Bernstein, P. (1994). Procrastination - a value or a cost. Journal of Portfolio Management, 20, 1. Bernstein, P. (1998). Against the gods. Toronto: John Wiley & Sons, Inc. Berzonsky, M. D. (1992). Identity style and coping strategies. Journal of Personality, 60, 771-788. Berzonsky, M. D., & Ferrari, J. R. (1996). Identity orientation and decisional strategies. Personality and Individual Differences, 20, 597-606. Beswick, G., & Mann, L. (1994). State orientation and procrastination. In J. Kuhl & J. Beckmann (Eds.), Volition and personality: Action versus state orientation (pp. 391-396). Gottingen, Germany: Hogrefe & Huber Publishers. Beswick, G., Rothblum, E. D., & Mann, L. (1988). Psychological antecedents of student procrastination. Australian Psychologist, 23, 207-217. Blatt, S. J., & Quinn, P. (1967). Punctual and procrastinating students: A study of temporal parameters. Journal of Consulting Psychology, 31, 169-174. Blunt, A. K., & Pychyl, T. A. (2000). Task aversiveness and procrastination: A multidimensional approach to task aversiveness across stages of personal projects. Personality & Individual Differences, 28, 153-167. Blunt, A., & Pychyl, T. A. (1998). Volitional action and inaction in the lives of undergraduate students: State orientation, procrastination and proneness to boredom. Personality & Individual Differences, 24, 837-846. Borsato, G. N. (2001). Time perspective, academic motivation, and procrastination. (Master’s dissertation, San Jose State University, 2001). Masters Abstracts International, 40, 239. Brackin, T., Ferguson, E., Skelly, B., & Chambliss, C. (2000). College students' use of electronic communication technology: Introverts versus extraverts: Ursinus College. Brand, C. R. (1997). Hans Eysenck's personality dimensions: Their number and nature. In H. Nyborg (Ed.), The scientific study of human nature: Tribute to Hans J. Eysenck at eighty (pp. 17-35). Oxford, UK: Pergamon/Elsevier Science Inc. Brannick, M. T. (2001, April). Reducing bias in the Schmidt-Hunter meta-analysis. Poster presented at the annual conference of the Society for Industrial and Organizational Psychology, San Diego. Bridges, K. R., & Roig, M. (1997). Academic procrastination and irrational thinking: A reexamination with context controlled. Personality & Individual Differences, 22, 941-944. Briody, R. (1980). An exploratory study of procrastination. (Doctoral dissertation, Brandeis University, 1980). Dissertation Abstracts International, 41, 590. The Nature of Procrastination 66 Brown, J. D., & Marshall, M. A. (2001). Great expectations: Optimism and pessimism in achievement settings. In E. C. Chang (Ed.), Optimism & pessimism: Implications for theory, research, and practice (pp. 239-255). Washington, DC: American Psychological Association Brown, R. T. (1991). Helping students confront and deal with stress and procrastination. Journal of College Student Psychotherapy, 6, 87-102. Brownlow, S., & Reasinger, R. D. (2000). Putting off until tomorrow what is better done today: Academic procrastination as a function of motivation toward college work. Journal of Social Behavior and Personality, 15, 15-34. Burka, J. B., & Yuen, L. M. (1983). Procrastination: Why you do it, what to do about it. Reading, MA: Addison-Wesley. Burns, L. R., Dittmann, K., Nguyen, N.-L., & Mitchelson, J. K. (2000). Academic procrastination, perfectionism, and control: Associations with vigilant and avoidant coping. Journal of Social Behavior and Personality, 15, 35-46. Busko, D. A. (1998). Causes and consequences of perfectionism and procrastination: A structural equation model. Unpublished master’s thesis, University of Guelph, Guelph, Ontario, Canada. Campbell, J. P. (1999). The definition and measurement of performance in the new age. In D. R. Ilgen & E. D. Pulakos (Eds.), The changing nature of performance: Implications for staffing, motivation, and development (pp. 399-429). San Francisco: Josey-Bass Publishers. Cantor, N., & Blanton, H. (1996). Effortful pursuit of personal goals in daily life. In P. M. Gollwitzer & J. A. Bargh (Eds.), The psychology of action: Linking cognition and motivation to behavior (pp. 338-359). New York: The Guilford Press. Carver, C. S., & Scheier, M. F. (1990). Principles of self-regulation: Action and emotion. In E. T. Higgins, & R. M. Sorrentino, (Eds.), Handbook of motivation and cognition: Foundations of social behavior (Vol. 2, pp. 3-52). New York: Guilford Press. Carver, C. S., & White, T. L. (1994). Behavioral inhibition, behavioral activation, and affective responses to impending reward and punishment: The BIS/BAS Scales. Journal of Personality and Social Psychology, 67, 319-333. Cascio, W.F. (1995). Whither industrial and organizational psychology in a changing world of work? American Psychologist, 50, 928-939. Cassady, J. C., & Johnson, R. E. (2002). Cognitive test anxiety and academic performance. Contemporary Educational Psychology, 27, 270-295. Chissom, B., & Iran-Nejad, A. (1992). Development of an instrument to assess learning strategies. Psychological Reports, 71, 1001-1002. Clark, J. L., & Hill, O. W. (1994). Academic procrastination among African-American college students. Psychological Reports, 75, 931-936. Clark, J. M. (1997). Cybernautical perspective on impulsivity and addiction. In C. D. Webster & M. A. Jackson (Eds.), Impulsivity: Theory, assessment, and treatment (pp. 82-91). New York: The Guilford Press. Clehouse, R. E. (2000). Determining persistence indicators of students enrolled in for-profit postsecondary institutions. Unpublished EdD, Northern Illinois University. Conti, R. (1996). Procrastination: a social psychological perspective. (Doctoral dissertation, Brandeis University, 1996). Dissertation Abstracts International, 57, 760. The Nature of Procrastination 67 Coote-Weymann, E. (1988). Procrastination in the workplace: Dispositional and situational Determinants of Delay Behavior at Work. Paper presented at the Academy of Management Proceedings. Corcoran, K., & Fischer., J. (2000). Measures for clinical practice: A sourcebook (2nd ed.). New York: Free Press. Cornwell, J. M., Ladd, R. T. (1993). Power and accuracy of the Schmidt and Hunter metaanalytic procedures. Educational & Psychological Measurement, 53, 877-895. Costa, P. T. Jr., & McCrae, R. R. (1992). The NEO personality inventory-revised. Odessa, FL: Psychological Assessment Resources. Crane, G. R. (1999) The Perseus project. Retrieved December 15, 2001, from http://www.perseus.tufts.edu Davis, J. K. (1999). The effects of culture on high school academic procrastination. Unpublished doctoral dissertation, University of Southern California, California. Davis, R. A., Flett, G. L., & Besser, A. (2002). Validation of a new scale for measuring problematic Internet use: Implications for pre-employment screening. Cyberpsychology & Behavior, 5, 331-345. Day, V., Mensink, D., & O'Sullivan, M. (2000). Patterns of academic procrastination. Journal of College Reading and Learning, 30, 120-134. De, S. (1996). The historical context of The Bhagavad Gita and its relation to Indian religious doctrines. Retrieved January 31, 2002, from http://eawc.evansville.edu/essays/de.htm Deci, E. L., & Ryan, R. M. (1985). Intrinsic motivation and self-determination in human behavior. New York: Plenum. Dewitte, S., & Lens, W. (2000a). Exploring volitional problems in academic procrastinators. International Journal of Educational Research, 33, 733-750. Dewitte, S., & Lens, W. (2000b). Procrastinators lack a broad action perspective. European Journal of Personality, 14, 121-140. Dewitte, S., & Schouwenburg, H. (in press). Procrastination, temptations, and incentives. European Journal of Personality. Donovan, J. M. (1995). Relating psychological measures to anthropological observations: Procrastination as a field proxy for death anxiety? Journal of Social Behavior & Personality, 10, 465-472. Dunn, G. (2000). Procrastination, stress, and coping: An investigation of the relationship between procrastination and hardiness. Unpublished Honours Bachelor of Arts, Carleton University, Ottawa. Durden, C. A. (1997). Life satisfaction as related to procrastination and delay of gratification. Unpublished master’s dissertation, Angelo State University, Texas. Effert, B. R., & Ferrari, J. R. (1989). Decisional procrastination: Examining personality correlates. Journal of Social Behavior & Personality, 4, 151-161. Elliot, R. (2002). A ten-year study of procrastination stability. Unpublished Masters, University of Louisana, Monroe. Ellis, A. (1973). Humanistic psychotherapy. New York: McGraw-Hill. Ellis, A. (1989). Comments on my critics. In M. E. Bernard & R. DiGiuseppe (Eds.), Inside rational-emotive therapy: A critical appraisal of the theory and therapy of Albert Ellis. San Diego: Academic Press. Ellis, A., & Knaus, W. J. (1977). Overcoming procrastination. New York: Signet Books. The Nature of Procrastination 68 Enns, M. W., & Cox, B. J. (1995). The nature and assessment of perfectionism: A critical analysis. In G. L. Flett & P. L. Hewitt (Eds.), Perfectionism: Theory, research, and treatment (pp. 33-62). Washington, DC: American Psychological Association. Eysenck, H. J. (1975). The inequality of man. San Diego, CA: EdITS/Educational & Industrial Testing Service. Eysenck, H. J., & Eysenck, S. B. G. (1975). Manual of the Eysenck Personality Questionnaire. London: Hodder & Stoughton. Eysenck, H., & Eysenck, S. (1976). Psychoticism as a dimension of personality. London: Hodder and Stoughton. Farnham, B. R. (1997). Roosevelt and the Munich crisis: A study of political decision-making. Princeton, NJ: Princeton University Press. Fee, R. L., & Tangney, J. P. (2000). Procrastination: A means of avoiding shame or guilt? Journal of Social Behavior and Personality, 15, 167-184. Feingold, A. (1994). Gender differences in personality: A meta-analysis. Psychological Bulletin, 116, 429-526. Ferrari, J. R. (1989a). Reliability of academic and dispositional measures of procrastination. Psychological Reports, 64, 1057-1058. Ferrari, J. R. (1989b). Self-handicapping by procrastinators: Effects of performance privacy and task importance. (Doctoral dissertation, Adelphi University, 1989). Dissertation Abstracts International, 50, 5377. Ferrari, J. R. (1991a). Compulsive procrastination: Some self-reported characteristics. Psychological Reports, 68, 455-458. Ferrari, J. R. (1991b). Procrastination and project creation: Choosing easy, nondiagnostic items to avoid self-relevant information. Journal of Social Behavior & Personality, 6, 619-628. Ferrari, J. R. (1991c). Self-handicapping by procrastinators: Protecting self-esteem, socialesteem, or both? Journal of Research in Personality, 25, 245-261. Ferrari, J. R. (1992a). Psychometric validation of two procrastination inventories for adults: Arousal and avoidance measures. Journal of Psychopathology & Behavioral Assessment, 14, 97-110. Ferrari, J. R. (1992b). Procrastinators and perfect behavior: An exploratory factor analysis of self-presentation, self-awareness, and self-handicapping components. Journal of Research in Personality, 26, 75-84. Ferrari, J. R. (1993a). Christmas and procrastination: Explaining lack of diligence at a “realworld” task deadline. Personality & Individual Differences, 14, 25-33. Ferrari, J. R. (1993b). Procrastination and impulsiveness: Two sides of a coin? In W. G. McCown, J. L. Johnson & M. B. Shure (Eds.), The impulsive client: Theory, research, and treatment (pp. 265-276). Washington: American Psychological Association. Ferrari, J. R. (1994). Dysfunctional procrastination and its relationship with self-esteem, interpersonal dependency, and self-defeating behaviors. Personality & Individual Differences, 17, 673-679. Ferrari, J. R. (1995). Perfectionism cognitions with nonclinical and clinical samples. Journal of Social Behavior and Personality, 10, 143-156. Ferrari, J. R. (2000). Procrastination and attention: Factor analysis of attention deficit, boredomness, intelligence, self-esteem, and task delay frequencies. Journal of Social Behavior and Personality, 15, 185-196. The Nature of Procrastination 69 Ferrari, J. R. (2001). Procrastination as self-regulation failure of performance: Effects of cognitive load, self-awareness, and time limits on 'Working Best Under Pressure'. European Journal of Personality, 15, 391-406. Ferrari, J. R., & Dovidio, J. F. (2000). Examining behavioral proceses in indecision: Decisional procrastination and decision-making style. Journal of Research in Personality, 34, 127137. Ferrari, J. R., & Dovidio, J. F. (2001). Behavioral information search by indecisives. Personality and Individual Differences, 30, 1113-1123. Ferrari, J. R., & Emmons, R. A. (1994). Procrastination as revenge: Do people report using delays as a strategy for vengeance? Personality & Individual Differences, 17, 539-544. Ferrari, J. R., & Emmons, R. A. (1995). Methods of procrastination and their relation to selfcontrol and self-reinforcement: An exploratory study. Journal of Social Behavior & Personality, 10, 135-142. Ferrari, J. R., & McCown, W. (1994). Procrastination tendencies among obsessivecompulsives and their relatives. Journal of Clinical Psychology, 50, 162-167. Ferrari, J. R., & Olivette, M. J. (1994). Parental authority and the development of female dysfunctional procrastination. Journal of Research in Personality, 28, 87-100. Ferrari, J. R., & Scher, S. J. (2000). Toward an understanding of academic and nonacademic tasks procrastinated by students: The use of daily logs. Psychology in the Schools, 37, 359-366. Ferrari, J. R., & Tice, D. M. (2000). Procrastination as a self-handicap for men and women: A task-avoidance strategy in a laboratory setting. Journal of Research in Personality, 34, 73-83. Ferrari, J. R., Harriott, J. S., & Zimmerman, M. (1999). The social support networks of procrastinators: Friends or family in times of trouble? Personality & Individual Differences, 26, 321-331. Ferrari, J. R., Harriott, J. S., Evans, L., Lecik-Michna, D. M., & Wenger, J. M. (1997). Exploring the time preferences of procrastinators: Night or day, which is the one? European Journal of Personality, 11, 187-196. Ferrari, J. R., Johnson, J. L., & McCown, W. G. (1995). Procrastination and task avoidance: Theory, research, and treatment. New York: Plenum Press. Ferrari, J. R., Keane, S. M., Wolfe, R. N., & Beck, B. L. (1998). The antecedents and consequences of academic excuse-making: Examining individual differences in procrastination. Research in Higher Education, 39, 199-215. Ferrari, J. R., Parker, J. T., & Ware, C. B. (1992). Academic procrastination: Personality correlates with Myers-Briggs types, self-efficacy, and academic locus of control. Journal of Social Behavior & Personality, 7, 495-502. Ferrari, J. R., Wolfe, R. N., Wesley, J. C., Schoff, L. A., & Beck, B., L. (1995). Ego-identity and academic procrastination among university students. Journal of College Student Development, 36, 361-367. Ferrari, J., & Beck, B. (1998). Affective responses before and after fraudulent excuses by academic procrastinators. Education, 118, 529-537. Flett, G. L., Blankstein, K. R., & Martin, T. R. (1995). Procrastination, negative selfevaluation, and stress in depression and anxiety: A review and preliminary model. In J. R. Ferrari & J. L. Johnson (Eds.), Procrastination and task avoidance: Theory, research, The Nature of Procrastination 70 and treatment. The Plenum series in social/clinical psychology (pp. 137-167). New York: Plenum Press. Flett, G. L., Blankstein, K. R., Hewitt, P. L., & Koledin, S. (1992). Components of perfectionism and procrastination in college students. Social Behavior & Personality, 20, 85-94. Flett, G. L., Hewitt, P. L., & Martin, T. R. (1995). Dimensions of perfectionism and procrastination. In J. R. Ferrari & J. L. Johnson (Eds.), Procrastination and task avoidance: Theory, research, and treatment. The Plenum series in social/clinical psychology (pp. 113-136). New York: Plenum Press. Flett, G. L., Hewitt, P. L., Blankstein, K. R., & Mosher, S. W. (1991). Perfectionism, selfactualization, and personal adjustment. Journal of Social Behavior and Personality, 6, 147-160. Franken, R. E. (1994) Human motivation (3rd ed.). Pacific Grove, CA: Brooks/Cole Publishing Co. Freud, S. (1961). The ego and the id. In J. Strachey (Ed. and trans.), The standard edition of the complete psychological works of Sigmund Freud (Vol. 19, pp. 12-66). London: Hogarth Press. (Original work published in 1923). Froehlich, R. A. (1987). A descriptive study of general procrastination in a group-oriented treatment setting. (Doctoral dissertation, United States International University, 1987). Dissertation Abstracts International, 48, 1151. Frost, R. O., Marten, P., Lahart, C., & Rosenblate, R. (1990). The Dimensions of Perfectionism. Cognitive Therapy and Research, 14, 449-468. Gersick, C. J. G. (1988). Time and transition in work teams: Toward a new model of group development. Academy of Management Journal, 31, 9-41. Glomb, T., Steel, P., & Arvey, R. (2002). Aggression and workplace violence. In R. Lord, R. Klimoski, & R. Kanfer (Eds.). Frontiers of industrial and organizational psychology: Emotions and work. San Francisco, CA: Jossey-Bass Inc. Gray, J. A. (1987). Perspectives on anxiety and impulsivity: A commentary. Journal of Research in Personality, 21, 493-509. Greatrix, J. (1999). Subjective vs objective measures of stress: Do procrastinators actually benefit. Unpublished Honours Bachelor of Science, Carleton University, Ottawa. Grecco, P. R. (1984). A cognitive-behavioral assessment of problematic academic procrastination: development of a procrastination self- statement inventory. (Doctoral dissertation, California School of Professional Psychology - Fresno, 1984). Dissertation Abstracts International, 46, 640. Green, L., Myerson, J., & McFadden, E. (1997). Rate of temporal discounting decreases with amount of reward. Memory & Cognition, 25, 715-723. Guilford, J. P. (1977). Will the real factor of extraversion-introversion please stand up? A reply to Eysenck. Psychological Bulletin, 84, 412-416. Guilfoyle, E. C. (1986). The effects of psychological reactance and paradoxical and selfdirective forms of brief psychotherapy on procrastination. (Doctoral dissertation, Texas A&M University, 1986). Dissertation Abstracts International, 47, 4327. Hall, S. M., & Brannick, M. T. (2002). Comparison of two random-effects method of metaanalysis. Journal of Applied Psychology, 87,377-389. Hair, J. F. Jr., Anderson, R. E., Tatham, R. L., & Black, W. C. (1992). Multivariate data analysis with readings (3rd ed.). New York: Macmillan Publishing Company. The Nature of Procrastination 71 Han, S. (1993). A multivariate study of procrastination: cognitive, affective, and behavioral factors in prediction. (Doctoral dissertation, State University of New York at Albany 1993). Dissertation Abstracts International, 54, 2512. Harary, K., & Donahue, E. (1994). Who do you think you are? Explore your many-sided self with Berkeley Personality Profile. San Francisco: Harper. Harriott, J. S., Ferrari, J. R., & Dovidio, J. F. (1996). Distractability, daydreaming, and selfcritical cognitions as determinants of indecision. Journal of Social Behavior and Personality, 11, 337-344. Harriott, J., & Ferrari, J. R. (1996). Prevalence of procrastination among samples of adults. Psychological Reports, 78, 611-616. Harriott, K. (1999). A correlational pilot study examining affect and procrastination on the internet. Unpublished manuscript, Ottawa, Carleton University. Harris, N. N., & Sutton, R. I. (1983). Task procrastination in organizations: A framework for research. Human Relations, 36, 987-995. Havel, A. (1993). Differential effectiveness of selected treatment approaches to procrastination. Unpublished doctoral dissertation, McGill University, Quebec, Canada. Haycock, L. A. (1993). The cognitive mediation of procrastination: an investigation of the relationship between procrastination and self-efficacy beliefs. (Doctoral dissertation, University of Minnesota, 1993). Dissertation Abstracts International, 54, 2261. Haycock, L. A., McCarthy, P., & Skay, C. L. (1998). Procrastination in college students: The role of self-efficacy and anxiety. Journal of Counseling & Development, 76, 317-324. Hess, B., Sherman, M. F., & Goodman, M. (2000). Eveningness predicts academic procrastination: The mediating role of neuroticism. Journal of Social Behavior and Personality, 15, 61-74. Holland, T. (2001). The perils of procrastination. Far Eastern Economic Review, 164, 66-72. Holmes, R. A. (2000). The effect of task structure and task order on subjective distress and dilatory behavior in academic procrastinators. Unpublished PhD, Hofstra University. Huang, J. C.-H. (1999). The attributional processes and emotional consequences of procrastination. (Doctoral dissertation, California School of Professional Psychology, 1999). Dissertation Abstracts International, 60, 367. Huffcutt, A. I., & Arthur, W., Jr. (1995). Development of a new outlier statistic for meta-analytic data. Journal of Applied Psychology, 80, 327-334. Hunt, E. B. (1995). Will we be smart enough?: A cognitive analysis of the coming workforce. New York: Russell Sage Foundation. Hunter, J. E., & Schmidt, F. L. (1990). Methods of meta-analysis: Correcting for error and bias in research findings across studies. Beverly Hills, CA: Sage. Jackson, T., Weiss, K. E., & Lundquist, J. J. (2000). Does procrastination mediate the relationship between optimism and subsequent stress? Journal of Social Behavior and Personality, 15, 203-212. James, W. (1890). Principles of psychology (Vols. 1-2). New York: Holt. John, O. P., & Sanjay, S. (1999). The Big Five trait taxonomy: History, measurement, and theoretical perspectives. In L. A. Pervin & O. P. John (Eds.), Handbook of personality (pp. 102-138). New York: The Guilford Press. John, O. P., Donahue, E. M., & Kentle, R. L. (1991). The Big Five Inventory – Versions 4a and 54. Berkeley, CA: University of California, Berkeley, Institute of Personality and Social Research. The Nature of Procrastination 72 Johnson, J. L., & Bloom, A. M. (1995). An analysis of the contribution of the five factors of personality to variance in academic procrastination. Personality & Individual Differences, 18, 127-133. Johnson, J., & McCown, W. (1989, May). Validation of an adult inventory of procrastination. Paper presented at the Midwestern Psychological Association. Johnson, S. (1751/2001). [On-line]. Available: http://charon.sfsu.edu/Johnson/Johnson.html. (Reprinted from Rambler No. 134). Jones, C. H., Slate, J. R., Bell, S., & Saddler, C. D. (1991). Helping high school students improve their academic skills: A necessary role for teachers. High School Journal, 74, 198-202. Jones, E. E., & Berglas, S. (1978). Control of attributions about the self through selfhandicapping strategies: The appeal of alcohol and the role of underachievement. Personality & Social Psychology Bulletin, 4, 200-206. Jung, C. G. (1966). Two essays on analytical psychology. Princeton: Princeton University Press. Kachgal, M. M., Hansen, L. S., & Nutter, K. J. (2001). Academic procrastination prevention/intervention: Strategies and recommendations. Journal of Developmental Education, 25, 14-24. Kalechstein, P., Hocevar, D., Zimmer, J. W., & Kalechstein, M. (1989). Procrastination over test preparation and test anxiety. In R. Schwarzer, H. M. van der Ploeg & G. D. Spielberger (Eds.), Advances in test anxiety research (Vol. 6, pp. 63-76). Lisse, The Netherlands: Swets & Zeitlinger. Kammeyer-Muelller, J., & Steel, P. (under review). Siphoning the bathwater away from the baby: Controlling instability and method variance when estimating predictor importance. Journal of Applied Psychology. Kanfer, R. (1990). Motivation Theory. In M. Dunnette & L. Houghs (Eds.), Handbook of industrial and organizational psychology (Vol. 1, 2nd ed., pp.124-151). Palo Alto. CA: Consulting Psychologists Press, Inc. Kanfer, R., & Ackerman, P. L. (1989). Motivation and cognitive abilities: An integrative/aptitude-treatment interaction approach to skill acquisition. Journal of Applied Psychology, 74, 657-690. Kanfer, R., & Heggestad, E. D. (1997). Motivational traits and skills: A person-centered approach to work motivation. Research in Organizational Behavior, 19, 1-56. Kaplan, J. C. (1998). Molecular basis of procrastination. Cloning of a gene for help in decision making. M S-Medecine Sciences, 14, 525-528. Karoly, P. (1993). Mechanisms of self-regulation: A systems view. Annual Review of Psychology, 44, 23-52. Kegley, C. W. (1989). The Bush administration and the future of American foreign policy: Pragmatism, or procrastination? Presidential Studies Quarterly, 19, 717-731. Kirby, K. N., & Marakovic, N. N. (1995). Modeling myopic decisions: Evidence for hyperbolic delay-discounting within subjects and amounts. Organizational Behavior & Human Decision Processes, 64, 22-30. Klein, E. (1971). A comprehensive etymological dictionary of the English language. New York: Elsevier Scientific Publishing Company. Kleinbeck, U., Quast, H.-H., Thierry, H., & Häcker, H. (Eds.). (1990). Work motivation. Hillsdale, NJ: Lawrence Erlbaum Associates. The Nature of Procrastination 73 Klinger, E. (1996). The contents of thoughts: Interference as the downside of adaptive normal mechanisms in thought flow. In I. G. Sarason, G. R. Pierce, & B. R. Sarason (Eds.), Cognitive interference: Theories, methods, and findings (pp. 3-23). Mahwah, NJ: Lawrence Erlbaum Associates. Klinger, E. (1999). Thought flow: Properties and mechanisms underlying shifts in content. In J. A. Singer & P. Salovey (Eds.), At play in the fields of consciousness: Essays in honor of Jerome L. Singer (pp. 29-50). Mahway, NJ: Lawrence Erlbaum Associates. Knaus, W. J. (1973). Overcoming procrastination. Rational Living, 8(2), 2-7. Knaus, W. J. (1979). Do it now. Englewood Cliffs, NJ: Prentice-Hall. Knaus, W. J. (2000). Procrastination, blame, and change. Journal of Social Behavior and Personality, 15, 153-166. Kuhl, J. (1994). A theory of action and state orientations. In J. Kuhl & J. Beckmann (Eds.), Volition and personality: Action versus state orientation (pp. 9-46). Göttingen, Germany: Hogrefe & Huber Publishers. Kuhl, J. (2000). A functional-design approach to motivation and self-regulation: The dynamics of personality systems interactions. In M. Boekaerts, P. R. Pintrich & M. Zeidner (Eds.), Handbook of self-regulation (pp. 111-169). San Diego, CA: Academic Press. Lamba, G. (1999). Effect of gender-role and self-efficacy on academic procrastination in college students. (Master’s dissertation, Truman State University, 1999). Masters Abstracts International, 38, 481. Lasane, T. P., & Jones, J. M. (2000). When socially induced temporal myopia interferes with academic goal-setting. Journal of Social Behavior and Personality, 15, 75-86. Lavoie, J. A. A., & Pychyl, T. A. (2001). Cyberslacking and the procrastination superhighway: A web-based survey of online procrastination, attitudes, and emotion. Social Science Computer Review, 19, 431-444. Lay, C. H. (1986). At last, my research article on procrastination. Journal of Research in Personality, 20, 474-495. Lay, C. H. (1987). A modal profile analysis of procrastinators: A search for types. Personality & Individual Differences, 8, 705-714. Lay, C. H. (1988). The relationship of procrastination and optimism to judgments of time to complete an essay and anticipation of setbacks. Journal of Social Behavior & Personality, 3, 201-214. Lay, C. H. (1990). Working to schedule on personal projects: An assessment of person-project characteristics and trait procrastination. Journal of Social Behavior & Personality, 5, 91103. Lay, C. H. (1992). Trait procrastination and the perception of person-task characteristics. Journal of Social Behavior & Personality, 7, 483-494. Lay, C. H. (1994). Trait procrastination and affective experiences: Describing past study behavior and its relation to agitation and dejection. Motivation & Emotion, 18, 269-284. Lay, C. H. (1997). Explaining lower-order traits through higher-order factors: The case of trait procrastination, conscientiousness, and the specificity dilemma. European Journal of Personality, 11, 267-278. Lay, C. H., & Brokenshire, R. (1997). Conscientiousness, procrastination, and person-task characteristics in job searching by unemployed adults. Current Psychology: Developmental, Learning, Personality, Social, 16, 83-96. The Nature of Procrastination 74 Lay, C. H., & Burns, P. (1991). Intentions and behavior in studying for an examination: The role of trait procrastination and its interaction with optimism. Journal of Social Behavior & Personality, 6, 605-617. Lay, C. H., & Schouwenburg, H. C. (1993). Trait procrastination, time management, and academic behavior. Journal of Social Behavior & Personality, 8, 647-662. Lay, C. H., & Silverman, S. (1996). Trait procrastination, anxiety, and dilatory behavior. Personality & Individual Differences, 21, 61-67. Lay, C. H., Edwards, J. M., Parker, J. D., & Endler, N. S. (1989). An assessment of appraisal, anxiety, coping, and procrastination during an examination period. European Journal of Personality, 3, 195-208. Lay, C. H., Knish, S., & Zanatta, R. (1992). Self-handicappers and procrastinators: A comparison of their practice behavior prior to an evaluation. Journal of Research in Personality, 26, 242-257. Lay, C. H., Kovacs, A., & Danto, D. (1998). The relation of trait procrastination to the big-five factor conscientiousness: An assessment with primary-junior school children based on self-report scales. Personality & Individual Differences, 25, 187-193. Lee, J. (2000). A comparison of the personal constructs of students scoring high, medium and low on a measure of academic procrastination. Unpublished master’s dissertation, Carleton University, Ottawa, Ontario, Canada. Lewin, K. (1935). A dynamic theory of personality. New York: McGraw Hill. Locke, E.A., & Latham, G.P. (1990). A theory of goal setting and task performance. Englewoods Cliffs, NJ: Prentice Hall. Loebenstein, A. M. (1996). The effects of subgoal setting and academic self-efficacy on procrastination (self-efficacy). (Doctoral dissertation, California School of Professional Psychology - San Diego, 1996). Dissertation Abstracts International, 57, 1446. Loers, D. L. (1985). Responsiveness to paradoxical intervention: Client characteristics. (Doctoral dissertation, University of Nebraska - Lincoln, 1985). Dissertation Abstracts International, 46, 2814-2815. Logue, A. W., Rodriguez, M. L., Pena-Correal, T. E., & Mauro, B. C. (1984). Choice in a selfcontrol paradigm: Quantification of experience-based differences. Journal of the Experimental Analysis of Behavior, 41, 53-67. Lonergan, J. M., & Maher, K. J. (2000). The relationship between job characteristics and workplace procrastination as moderated by locus of control. Journal of Social Behavior and Personality, 15, 213-224. Lopez, F., & Wambach, C. (1982). Effects of paradoxical and self-control directives in counseling. Journal of Counseling Psychology, 29, 115-124. Lowenstein, G. (1992). The fall and rise of psychological explanations in the economics of intertemporal choice. In G. Lowenstein & J. Elster (Eds.), Choice over time (pp. 3-34). New York: Russell Sage Foundation. Lowenstein, G., & Elster, J. (Eds.). (1992). Choice over time. New York: Russell Sage Foundation. Lowenstein, G., & Prelec, D. (1992). Anomalies in intertemporal choice: Evidence and an interpretation. In G. Lowenstein & J. Elster (Eds.), Choice over time (pp. 119-145). New York: Russell Sage Foundation. Luce, R. D. (1990). Rational versus plausible accounting equivalences in preference judgments. Psychological Science, 1, 225-234. The Nature of Procrastination 75 Lum, M. K. M. (1960). A comparison of under- and overachieving female college students. Journal of Educational Psychology, 51, 109-115. Lyly, J. (1579/1995). Gales’ quotations [Computer Software]. Princeton Junction, NJ: Cognetics Corp. Mann, L. (1982). Decision-making questionnaire. Unpublished manuscript. Flinders University of South Australia. Mann, L., Burnett, P., Radford, M., & Ford, S. (1997). The Melbourne Decision Making Questionnaire: An instrument for measuring patterns for coping with decisional conflict. Journal of Behavioral Decision Making, 10, 1-19. Mallows, C. (1999). Existential aspects of procrastination. Unpublished Honours Bachelor of Arts, Carleton University, Ottawa. Mann, L., Burnett, P., Radford, M., & Ford, S. (1997). The Melbourne Decision Making Questionnaire: An instrument for measuring patterns for coping with decisional conflict. Journal of Behavioral Decision Making, 10, 1-19. Mann, L., Radford, M., Burnett, P., Ford, S., Bond, M., Leung, K., et al. (1998). Cross-cultural differences in self-reported decision-making style and confidence. International Journal of Psychology, 33, 325-335. Many shoppers won’t do today what they can do on Dec. 24. (1999, November 24). The New York Times, p. 12. Mariano, C. M. (1993). A study of Ed.d.s, Ph.d.s and ABDs in educational administration (dissertation completion, Ed.d. candidates, Ph.d. candidates). (Doctoral dissertation, Boston College, 1993). Dissertation Abstracts International, 54, 2069. Martin, A. (1999). Etude prospective de la procrastination academique: Le role des illusions positives, de la perception illusoire du temps et de la motivation. Unpublished master’s dissertation, Universite Laval, Quebec, Canada. Martin, T. R., Flett, G. L., Hewitt, P. L., Krames, L., & Szanto, G. (1996). Personality correlates of depression and health symptoms: A test of a self-regulation model. Journal of Research in Personality, 30, 264-277. Mayers, A. N. (1946). Anxiety and the group. Journal of Nervous and Mental Disease, 103, 130136. Mazur, J. E. (1987). An adjusting procedure for studying delayed reinforcement. In M. L. Commons & J. E. Mazur (Eds.), The effect of delay and of intervening events on reinforcement value. Quantitative analyses of behavior (Vol. 5, pp. 55-73). Hillsdale, NJ, USA: Lawrence Erlbaum Associates Inc. Mazur, J. E. (1996). Procrastination by pigeons: Preferences for larger, more delayed work requirements. Journal of the Experimental Analysis of Behavior, 65, 159-171. Mazur, J. E. (1998). Procrastination by pigeons with fixed-interval response requirements. Journal of the Experimental Analysis of Behavior, 69, 185-197. McClelland, D. C. (1985). How motives, skills, and values determine what people do. American Psychologist, 40, 812-825. McCown, W., & Johnson, J. (1989). Differential arousal gradients in chronic procrastination. Paper presented at the American Psychological Association, Alexandria, VA. McCown, W., Johnson, J., & Petzel, T. (1989). Procrastination, a principal components analysis. Personality & Individual Differences, 10, 197-202. The Nature of Procrastination 76 McCown, W., Petzel, T., & Rupert, P. (1987). An experimental study of some hypothesized behaviors and personality variables of college student procrastinators. Personality & Individual Differences, 8, 781-786. McCrae, R. R., (1996). Social consequences of experiential openness, Psychological Bulletin, 120, 323-337 McKean, K. J. (1994). Using multiple risk factors to assess the behavioral, cognitive, and affective effects of learned helplessness. Journal of Psychology, 128, 177-183. Mehrabian, A. (2000). Beyond IQ: Broad-based measurement of individual success potential or "emotional intelligence". Genetic, Social, & General Psychology Monographs, 126, 133-239. Micek, L. (1982). Some problems of self-autoregulation of volitional processes in university students from the point of view of their mental health. Sbornik Praci Filosoficke Fakulty Brnenske University, 31, 51-70. Milgram, N. A. (1991). Procrastination. In R. Dulbecco (Ed.), Encyclopedia of human biology (Vol. 6, pp. 149-155). New York: Academic Press. Milgram, N. A., Batori, G., & Mowrer, D. (1993). Correlates of academic procrastination. Journal of School Psychology, 31, 487-500. Milgram, N. A., Gehrman, T., & Keinan, G. (1992). Procrastination and emotional upset: A typological model. Personality & Individual Differences, 13, 1307-1313. Milgram, N. A., Sroloff, B., & Rosenbaum, M. (1988). The procrastination of everyday life. Journal of Research in Personality, 22, 197-212. Milgram, N. N., & Tenne, R. (2000). Personality correlates of decisional and task avoidant procrastination. European Journal of Personality, 14, 141-156. Milgram, N., & Naaman, N. (1996). Typology in procrastination. Personality & Individual Differences, 20, 679-683. Milgram, N., & Toubiana, Y. (1999). Academic anxiety, academic procrastination, and parental involvement in students and their parents. British Journal of Educational Psychology, 69, 345-361. Milgram, N., Mey-Tal, G., & Levison, Y. (1998). Procrastination, generalized or specific, in college students and their parents. Personality & Individual Differences, 25, 297-316. Miller, N., & Pollock, V. E. (1994). Meta-analytic synthesis for theory development. In H. Cooper, & L. V. Hedges (Eds.), The handbook of research synthesis (pp. 457-483). New York: Russell Sage Foundation. Mischel, W. (1968). Personality and assessment. New York: Wiley. Mitchell, T. (1997). Matching motivational strategies with organizational contexts. In L. L. Cummings & B. M. Staw (Eds.), Research in organizational behavior (Vol. 19, pp. 57149): Greenwich, Connecticut: JAI Press Inc. Mulry, G., Fleming, R., & Gottschalk, A. C. (1994). Psychological reactance and brief treatment of academic procrastination. Journal of College Student Psychotherapy, 9, 41-56. Murray, H. A. (1938). Explorations in personality. New York: Oxford University Press. Naylor, J. C., Pritchard, R. D., & Ilgen, D. R. (1980). A theory of behavior in organizations. New York: Academic Press. O’Donoghue, T., & Rabin, M. (1999). Incentives for procrastinators. Quarterly Journal of Economics, 114, 769-816. The Nature of Procrastination 77 Oettingen, G. (1996). Positive fantasy and motivation. In P. M. Gollwitzer & J. A. Bargh (Eds.), The psychology of action: Linking cognition and motivation to behavior (pp. 236-259). New York: The Guilford Press. Ones, D. S., & Viswesvaran, C. (1996). A general theory of conscientiousness at work: Theoretical underpinnings and empirical findings. Paper presented at the 11th annual convention of the Society for Industrial Organizational Psychology, San Diego, CA. Onwuegbuzie, A. J. (2000a). I'll being my statistics assignment tomorrow: The relationship between statistics anxiety and academic procrastination. Paper presented at the Annual Conference of the American Educational Research Association, New Orleans. Onwuegbuzie, A. J. (2000b). Academic procrastinators and perfectionistic tendencies among graduate students. Journal of Social Behavior and Personality, 15, 103-109. Onwuegbuzie, A. J., & Jiao, Q. G. (2000). I'll go to the library later: The relationship between academic procrastination and library anxiety. College & Research Libraries, 61, 45-54. Orellana-Damacela, L. E., Tindale, R. S., & Suárez-Balcázar, Y. (2000). Decisional and behavioral procrastination: how they relate to self-discrepancies. Journal of Social Behavior and Personality, 15, 225-238. Ostaszewski, P. (1996). The relation between temperament and rate of temporal discounting. European Journal of Personality, 10, 161-172. Ostaszewski, P. (1997). Temperament and the discounting of delayed and probabilistic rewards: Conjoining European and American psychological traditions. European Psychologist, 2, 35-43. Ostroff, C. (1993). Comparing correlations based on individual-level and aggregated data. Journal of Applied Psychology, 78, 569-582. Ottens, A. J. (1982). A guaranteed scheduling technique to manage students' procrastination. College Student Journal, 16, 371-376. Owens, A. M., & Newbegin, I. (1997). Procrastination in high school achievement: A causal structural model. Journal of Social Behavior & Personality, 12, 869-887. Pearson, P. R. (1990). Is impulsiveness aligned with psychoticism or with extraversion? Journal of Psychology, 124, 347-348. Peterson, C., Colvin, D., & Lin, E. H. (1992). Explanatory style and helplessness. Social Behavior and Personality, 20, 1-13. Peterson, K. E. (1987). Relationships among measures of writer's block, writing anxiety, and procrastination. (Doctoral dissertation, Ohio State University, 1987). Dissertation Abstracts International, 48, 1505. Pickering, A. D., Corr, P. J., Powell, J. H., Kumari, V., Thornton, J. C., & Gray, J. A. (1997). Individual differences in reactions to reinforcing stimuli are neither black nor white: To what extent are they Gray? In H. Nyborg (Ed.), The scientific study of human nature: Tribute to Hans J. Eysenck at eighty (pp. 36-67). Oxford, UK: Pergamon/Elsevier Science Inc. Potts, T. J. (1987). Predicting procrastination on academic tasks with self-report personality measures. (Doctoral dissertation, Hofstra Univeristy, 1987). Dissertation Abstracts International, 48, 1543. Procrastination Research Group (2002). References for books, journal articles and theses about procrastination. Available from Procrastination Research Group Web site, http://www.carleton.ca/~tpychyl/prg/research/research_complete_biblio.html The Nature of Procrastination 78 Prohaska, V., Morrill, P., Atiles, I., & Perez, A. (2000). Academic procrastination by nontraditional students. Journal of Social Behavior and Personality, 15, 125-134. Pychyl, T. A. (1995). Personal projects, subjective well-being and the lives of doctoral students (goal oriented). Unpublished doctoral dissertation, Carleton University, Ottawa, Ontario, Canada. Pychyl, T. A. (1999). A brief history of procrastination. Retrieved December 15, 2001, from http://superior.carleton.ca/~tpychyl/history.html Pychyl, T. A., Coplan, R. J., & Reid, P. A. (2002). Parenting and Procrastination: Gender differences in the relations between procrastination, parenting style and self-worth in early adolescence. Personality and Individual Differences, 33, 271-285. Pychyl, T. A., Lee, J. M., Thibodeau, R., & Blunt, A. (2000). Five days of emotion: An experience sampling study of undergraduate student procrastination. Journal of Social Behavior and Personality, 15, 3-13. Quarton, J. P. (1992). How do adults experience chronic procrastination? A field guide for visitors from outer space. (Doctoral dissertation, The Union Institute, 1993). Dissertation Abstracts International, 53, 3789. Rachlin, H. (1990). Why do people gamble and keep gambling despite heavy losses? Psychological Science, 1, 294-297. Rachlin, H. (2000). The science of self-control. Cambridge, MA: Harvard University Press Rawlins, D. R. (1995). A study of academic procrastination in middle-school-aged children. (Doctoral dissertation, University of New York, 1995). Dissertation Abstracts International, 56, 1708. Raynor, J. O., & Entin, E. (1982). Achievement motivation as a determinant of persistence in contingent and noncontingent paths. In J. O. Raynor & E. Entin (Eds.), Motivation, career striving, and aging (pp. 83-92). Washington, DC: Hemisphere. Read, D. (2001). Intrapersonal dilemmas. Human Relations, 54, 1093-1117. Reasinger, R., & Brownlow, S. (1996). Puttting off until tomorrow what is better done today: Academic procrastinatoin as a function of motivation toward college work. Paper presented at the Annual Meeting of the Southeastern Psychological Association. Revelle, W. (1997). Extraversion and impulsivity: The lost dimension? In H. Nyborg (Ed.), The scientific study of human nature: Tribute to Hans J. Eysenck at eighty (pp. 189-212). Oxford, UK: Pergamon/Elsevier Science Inc. Ringenbach, P. T. (1971). Procrastination through the ages: A definitive history. Palmer, Lake CO: Filter Press. Ronen, S. (1994). An underlying structure of motivational need taxonomies: A cross-cultural confirmation. In H. C. Triandis, M. Dunnette, & L. Houghs (Eds.), Handbook of industrial and organizational psychology (Vol. 4, 2nd ed., pp.241-269). Palo Alto. CA: Consulting Psychologists Press, Inc. Rothblum, E. D., Solomon, L. J., & Murakami, J. (1986). Affective, cognitive, and behavioral differences between high and low procrastinators. Journal of Counseling Psychology, 33, 387-394. Rotter, J. B. (1954). Social learning and clinical psychology. New York: Prentice-Hall. Ruiz-Caballero, J. A, & Bermudez, J. (1995). Neuroticism, mood, and retrieval of negative personal memories. Journal of General Psychology, 122, 29-35. Saddler, C. D., & Buley, J. (1999). Predictors of academic procrastination in college students. Psychological Reports, 84, 686-688. The Nature of Procrastination 79 Saddler, C. D., & Sacks, L. A. (1993). Multidimensional perfectionism and academic procrastination: Relationships with depression in university students. Psychological Reports, 73, 863-871. Saklofske, D. F, Kelly, I. W, & Janzen, B. L. (1995). Neuroticism, depression, and depression proneness. Personality & Individual Differences, 18, 27-31. Sanders, M. I. (1994). Procrastination, anticipation, and the timing of inevitable aversive events. (Doctoral dissertation, Columbia University, 1994). Dissertation Abstracts International, 55, 1224. Sarason, I. G., Sarason, B. R., & Pierce, G. R. (1990). Anxiety, cognitive interference, and performance. Journal of Social Behavior and Personality, 5, 1-18. Sarmany, S. I. (1999). Procrastination, need for cognition and sensation seeking. Studia Psychologica, 41, 73-85. Savage, L. J. (1990). Historical and critical comments on utility. In P. K. Moser (Ed.), Rationality in action: Contemporary approaches (pp. 41-54). New York, NY, USA: Cambridge University Press. (Reprinted from The foundations of statistics, 2nd ed., 1972, New York: Dover). Scheier, M. F. & Carver, C. S. (1985). Optimism, coping, health: Assessment and implications of generalized outcome expectancies. Health Psychology, 4, 219-247. Scher, S. J., & Ferrari, J. R. (2000). The recall of completed and noncompleted tasks through daily logs to measure procrastination. Journal of Social Behavior and Personality, 15, 255-266. Scher, S. J., & Osterman, N. M. (2002). Procrastination, conscientiousness, anxiety, and goals: Exploring the measurement and correlates of procrastination among school-aged children. Psychology in Schools, 39, 385-398. Schlenker, B. R., & Weigold, M. F. (1990). Self-consciousness and self-presentation: Being autonomous versus appearing autonomous. Journal of Personality & Social Psychology, 59, 820-828 Schneider, F. W., & Green, J. E. (1977). The need for affiliation and sex as moderators of the relationship between need for achievement and academic performance. Journal of School Psychology, 15, 269-277. Schouwenburg, H. C. (1991). The diagnosis of procrastination in students. Nederlands Tijdschrift voor de Psychologie en Haar Grensgebieden, 46, 379-385. Schouwenburg, H. (1995, October 10). Procrastination and personality: An empirical study among university students. Message posted to Oblov electronic mailing list. Schouwenburg, H. C. (1992). Procrastinators and fear of failure: An exploration of reasons for procrastination. European Journal of Personality, 6, 225-236. Schouwenburg, H. C. (1993). Procrastinating and failure-fearing students in terms of personality-describing adjectives. Nederlands Tijdschrift voor de Psychologie en Haar Grensgebieden, 48, 43-44. Schouwenburg, H. C. (1995). Academic procrastination: Theoretical notions, measurement, and research. In J. R. Ferrari & J. L. Johnson (Eds.), Procrastination and task avoidance: Theory, research, and treatment. The Plenum series in social/clinical psychology (pp. 7196). New York: Plenum Press. Schouwenburg, H. C., & Groenewoud, J. T. (1997). Studieplanning: Ein werkboek voor studenten [Study planning: A workbook for students]. Groningen: Wolters-Noordhoff. The Nature of Procrastination 80 Schouwenburg, H. C., & Groenewoud, J. T. (2001). Study motivation under social temptation; effects of trait procrastination. Personality & Individual Differences, 30, 229-240. Schouwenburg, H. C., & Lay, C. H. (1995). Trait procrastination and the Big Five factors of personality. Personality & Individual Differences, 18, 481-490. Schwartz, B. (1989). Psychology of learning and behavior (3rd ed.). New York: W. W. Norton & Company, Inc. Schwarzer, R., & Jerusalem, M. (1999, 2001). Skalen zur erfassung vun lehrer-und. Retrieved September 27, 2002, from http://www.fuberlin.de/gesund/skalen/Language_Selection/Turkish/General_Perceived_SelfEfficac/Startpage_English/startpage_english.htm Senécal , C., Koestner, R., & Vallerand, R. J. (1995). Self-regulation and academic procrastination. Journal of Social Psychology, 135, 607-619. Senécal , C., Lavoie, K., & Koestner, R. (1997). Trait and situational factors in procrastination: An interactional model. Journal of Social Behavior & Personality, 12, 889-903. Senécal, C., & Guay, F. (2000). Procrastination in job-seeking: An analysis of motivational processes and feelings of hopelessness. Journal of Social Behavior and Personality, 15, 267-282. Shizgal, P. (1999). On the neural computation of utility: Implications from studies of brain stimulation reward. In D. Kahneman, E. Diener, & N. Schwartz (Eds.) Well-being: The foundations of hedonic psychology (pp. 500-524). New York: Russell Sage Foundation. Shoham-Salomon, V., Avner, R., & Neeman, R. (1989). You're changed if you do and changed if you don't: Mechanisms underlying paradoxical interventions. Journal of Consulting & Clinical Psychology, 57, 590-598. Sigall, H., Kruglanski, A., & Fyock, J. (2000). Wishful thinking and procrastination. Journal of Social Behavior and Personality, 15, 283-296. Silver, M., & Sabini, J. (1981). Procrastinating. Journal for the Theory of Social Behavior, 11, 207-221. Simon, H. A. (1994). The bottleneck of attention: Connecting thought with motivation. In W. D. Spaulding (Ed.), Nebraska symposium in motivation: Vol. 41. Integrative views of motivation, cognition, and emotion (pp. 1-21). Lincoln, NE: University of Nebraska Press. Sirois, F. M., & Pychyl, T. A. (2002). Academic procrastination: Costs to health and wellbeing. Paper presented at the American Psychological Association, Chicago. Skiffington, S. T. (1982). The development and validation of a self-report measure of general procrastination: the time utilization inventory. (Doctoral dissertation, University of Georgia, 1982). Dissertation Abstracts International, 43, 2003. Skoyles, J. R., & Sagan, D. (2002). Up from dragons. New York: McGraw-Hill. Slaney, R. B., Ashby, J. S., & Trippi, J. (1995). Perfectionism: Its measurement and career relevance. Journal of Career Assessment, 3, 279-297. Slaney, R. B., Rice, K. G., & Ashby, J. S (2002). A programmatic approach to measuring perfectionism: The Almost Perfect Scales. In G. L. Flett & P. L. Hewitt (Eds.), Perfectionism: Theory, research, and treatment (pp. 63-88). Washington, DC: American Psychological Association. Smith, P. C. (1976). Behavior, results, and organizational effectiveness: The problem of criteria. In M. D. Dunnette (Ed.), Handbook of industrial and organizational psychology (pp. 745-775). The Nature of Procrastination 81 Smith, T. (1994). Personality correlates of learning and study activities in college students. Unpublished master’s dissertation, University of Toronto, Toronto, Ontario, Canada. Smith, T. W., Snyder, C. R, & Handelsman, M. M. (1982). On the self-serving function of an academic wooden leg: Test anxiety as a self-handicapping strategy. Journal of Personality & Social Psychology, 42, 314-321. Solomon, L. J., & Rothblum, E. D. (1984). Academic procrastination: Frequency and cognitive-behavioral correlates. Journal of Counseling Psychology, 31, 503-509. Somers, M. M. (1992). Getting around to it, eventually: Work attitudes and behaviours of student procrastinators. Unpublished doctoral dissertation, University of Waterloo, Waterloo, Ontario, Canada. Sommer, W. G. (1990). Procrastination and cramming: How adept students ace the system. Journal of American College Health, 39, 5-10. Specter, M. H., & Ferrari, J. R. (2000). Time orientations of procrastinators: Focusing on the past, present, or future? Journal of Social Behavior and Personality, 15, 197-202. Spence, J. T., & Helmreich, R. L. (1983). Achievement-related motives and behavior. In J. T. Spence (Ed.), Achievement and achievement motives: Psychological and sociological approaches (pp. 10-74). San Francisco: W.H. Freeman & Co. Stainton, M. (1994). The development and application of a procrastinatory cognitions inventory. Unpublished MA, York University, Canada. Stainton, M., Lay, C. H., & Flett, G. L. (2000). Trait procrastinators and behavior/trait-specific cognitions. Journal of Social Behavior and Personality, 15, 297-312. Stanhope, P. D. (1749/1968). Bartlett’s familiar quotations (14th ed.). Boston: Little, Brown and Company. Steel, P. (2002a). [Correlations of procrastination with the big five personality traits]. Unpublished raw data. Steel, P. (2002b). The measurement and nature of procrastination. Unpublished doctoral dissertation, University of Minnesota, Minnesota. Steel, P., & Kammeyer-Mueller, J. D. (2002). Comparing meta-analytic moderator estimation techniques under realistic conditions. Journal of Applied Psychology, 87, 96-111. Steel, P., & Ones, D. (2002). Personality and happiness: A national level of analysis. Journal of Personality and Social Psychology, 83, 767-781. Steel, P., Brothen, T., & Wambach, C. (2001). Procrastination and personality, performance, and mood. Personality & Individual Differences, 30, 95-106. Stöber, J. (1998). The Frost Multidimensional Perfectionism Scale revisited: More perfect with four (instead of six) dimensions. Personality and Individual Differences, 24, 481-491. Stöber, J., & Joormann, J. (2001). Worry, procrastination, and perfectionism: Differentiating amount of worry, pathological worry, anxiety, and depression. Cognitive Therapy & Research, 25, 49-60. Stone, D. A. (2000). The neuropsychological correlates of severe academic procrastination. Unpublished doctoral dissertation, University of Michigan, Michigan. Strong, S. R., Wambach, C. A., Lopez, F. G., & Cooper, R. K. (1979). Motivational and equipping function of interpretation in counseling. Journal of Counseling Psychology, 26, 98-109. Subotnik, R., Steiner, C., & Chakraborty, B. (1999). Procrastination revisited: The constructive use of delayed response. Creativity Research Journal, 12, 151-160. The Nature of Procrastination 82 Strongman, K. T., & Burt, C. D. B. (2000). Taking breaks from work: An exploratory inquiry. Journal of Psychology, 134, 229-242. Tabachnick, B. G. & Fidell, L. S. (1989). Using multivariate statistics (2nd Ed.). New York: HarperCollins Publishers, Inc. Tafarodi, R. W., & Swann, W. B. (2001). Two-dimensional self-esteem: Theory and measurement. Personality & Individual Differences, 31, 653-673. Tellegen, A. (1985). Structure of mood and personality and their relevance for assessing anxiety, with an emphasis on self-report. In A. H. Tuma & J. D. Maser (Eds.), Anxiety and the anxiety disorders (pp. 681-706). Mahwah, NJ: Erlbaum. Tellegen, A. (1991). Personality traits: Issues of definition, evidence, and assessment. In W. M. Grove & D. Chicchetti (Eds.), Thinking clearly about psychology (Vol. 2., pp. 10-35). Minneapolis: University of Minnesota Press. Terry, D. J., Tonge, L., & Callan, V. J. (1995). Employee adjustment to stress: The role of coping resources, situational factors, and coping responses. Anxiety, Stress, and Coping An International Journal, 8, 1-24. The politics of procrastination. (1999). The Economist, 351, 48. The Uruguay round’s next deadline: Death by procrastination. (1992). The Economist, 324, 6869. Thorndike, E. L. (1949). Personnel selection. New York: Wiley. Tice, D. M., & Baumeister, R. F. (1997). Longitudinal study of procrastination, performance, stress, and health: The costs and benefits of dawdling. Psychological Science, 8, 454-458. Tice, D. M., & Bratslavsky, E. (2000). Giving in to feel good: The place of emotion regulation in the context of general self-control. Psychological Inquiry, 11, 149-159. Tice, D. M., Bratslavsky, E., & Baumeister, R. F. (2001). Emotional distress regulation takes precedence over impulse control: If you feel bad, do it! Journal of Personality & Social Psychology, 80, 53-67. Tuckman, B. W. (1991). The development and concurrent validity of the Procrastination Scale. Educational & Psychological Measurement, 51, 473-480. Tuckman, B. W., & Abry, D. (1998). Developing a motivational model of college achievement. Paper presented at the Annual Meeting of the American Psychological Association, San Francisco. Twenge, J. (2000). The age of anxiety? The birth cohort change in anxiety and neuroticism, 1952-1993. Journal of Personality & Social Psychology, 79, 1007-1021 Tversky, A., & Kahneman, D. (1992). Advances in Prospect Theory: Cumulative representation of uncertainty. Journal of Risk and Uncertainty, 5, 297-323. US Census Bureau (2000). http://www.census.gov/main/www/cen2000.html. Van Eerde, W. (1998). Work motivations and procrastination: Self-set goals and action avoidance. Unpublished Ph.D., Universitiet van Amsterdam. Van Eerde, W., & Thierry, H. (1996). Vroom’s Expectancy Models and Work-Related Criteria: A meta-analysis. Journal of Applied Psychology, 81, 575-586. Van Raaij, W. F. (1984). Micro and macro economic psychology. Journal of Economic Psychology, 5, 385-401. Van Tuinen, M., & Ramanaiah, N. V. (1979). A multimethod analysis of selected self-esteem measures. Journal of Research in Personality, 13, 16-24. The Nature of Procrastination 83 Vestervelt, C. M. (2000). An examination of the content and construct validity of four measures of procrastination. Unpublished MA, Carleton University, Canada. Vodanovich, S. J., & Rupp, D. E. (1999). Are procrastinators prone to boredom? Social Behavior & Personality, 27, 11-16. Vodanovich, S. J., & Seib, H. M. (1997). Relationship between time structure and procrastination. Psychological Reports, 80, 211-215. Voicu, D. (1992). An examination of parent-child relations and psychological adjustment in relation to trait procrastination. Unpublished master’s dissertation, York University, Toronto, Ontario, Canada. Vroom, V. H. (1964). Work and motivation. New York: Wiley. Walsh, J. J., & Ugumba-Agwunobi, G. (2002). Individual differences in statistics anxiety: the roles of perfectionism, procrastination and trait anxiety. Personality and Individual Differences, 33, 239-251. Watkins, J. (1997, June). Popperian ideas on progress and rationality in science. The Critical Rationalist, 2. Retreived December 15, 2001, from http://www.eeng.dcu.ie/~tkpw/tcr/volume-02/number-02/v02n02.html Watson, D. C. (2001). Procrastination and the five-factor model: A facet level analysis. Personality & Individual Differences, 30, 149-158. Watson, D., & Clark, L. A. (1997). Extraversion and its positive emotional core. In R. Hogan, J. A. Johnson, & S. R. Briggs (Eds.), Handbook of personality psychology (pp. 767-793). San Diego, CA: Academic Press. Wedeman, S. C. (1985). Procrastination: an inquiry into its etiology and phenomenology. Unpublished PHD, University of Pennsylvania. Wernicke, R. A. (1999). Mediational tests of the relationship between perfectionism and procrastination. (Master’s dissertation, The American University, 1999). Masters Abstracts International, 37, 1982. Wesley, J. C. (1994). Effects of ability, high school achievement, and procrastinatory behavior on college performance. Educational & Psychological Measurement, 54, 404-408. Wessman, A. E. (1973). Personality and the subjective experience of time. Journal of Personality Assessment, 37, 103-114. Whitener, E. M. (1990). Confusion of confidence intervals and credibility intervals in metaanalysis. Journal of Applied Psychology, 75, 315-321. Wortman, P. M. (1994). Judging research quality. In H. Cooper, & L. V. Hedges (Eds.), The handbook of research synthesis (pp. 97-109). New York: Russell Sage Foundation Zamanpour, H. (2000). The mediational roles of performance-avoidance goals pursuit and procrastination in the hierarchical model of achievement motivation. Unpublished master’s dissertation, Carleton University, Ottawa, Ontario, Canada. The Nature of Procrastination 84 Figure Caption Figure 1. Graph of a student’s utility estimation for socializing versus writing an essay over the course of a semester. Utility The Nature of Procrastination 85 90 80 70 60 Socializing 50 40 30 Essay Writing 20 10 0 15-Sep 8-Oct December 3rd 31-Oct Time 23-Nov 16-Dec The Nature of Procrastination 86 Table 1 The Reliability of Procrastination Scales Name Academic Procrastination Scale (APS) Adult Inventory of Procrastination (AIP) Aitken Procrastination Inventory (API) Decisional Procrastination Questionnaires (DPQI, DPQII) General Procrastination Scale (GPS) Procrastination Assessment Scale-Students (PASS) PASS - Frequency PASS - Problem Procrastination Log - Behavior Procrastination Self-Statement Inventory (PSSI) Test Procrastination Questionnaire (TPQ) That’s Me – That’s Not Me Tuckman Procrastination Scale (TPS) Work Procrastination Scale (WPS) Items K N Milgram & Toubina, 1999 21 7 1,279 .90 McCown & Johnson, 1989 15 17 2,803 .81 Aitken, 1982 19 3 276 .82 Mann, 1982; Mann et al., 1997 5 22 7,476 .79 Lay, 1986 20 36 5,396 .87 Solomon & Rothblum, 1984 12 3 591 .83 Lopez & Wambach, 1982 6 6 11 8 4 4 1,610 923 218 .74 .73 .64 Grecco, 1983 24 2 485 .83 10 2 238 .94 16 11 2,695 .86 Tuckman, 1991 35 3 300 .87 Steel, 2002 9 2 360 .88 Authors Kalechstein, Hocevar, Zimmer, & Kalechstein, 1989 Tuckman, 1991, 1999 The Nature of Procrastination 87 Table 2 The Means, Standard Deviations and Intercorrelations of Procrastination Scales Procrastination 1 2 3 4 5 6 7 8 9 Mean APS 2.48 (130) AIP 2.71 (3,216) API 2.72 (2,052) DPQ 2.62 (4,534) GPS 2.81 (5,843) PASS 2.93 (2,002) PASS – Freq. 2.29 (2,006) PASS – Prob. 2.06 (1,677) Procras. Log - 10 PSSI 11 TPQ 12 That’s Me/Not Me 13 TPS 14 WPS 1.80 (355) 2.20 (70) 3.14 (652) 2.43 (305) 3.05 (228) Std .48 (130) .68 (2,874) .55 (1,960) .70 (2,142) .79 (5,240) .64 (1,822) .64 (2,006) .61 (1,677) - 1 2 3 4 5 6 7 - .60/.75 (20) .46/.57 .24/.30 (2,288) (32) .78/.93 .73/.80 .66/.79 (732) (160) (1,400) .26/.31 .64/.75 (344) (141) .60/.75 (102) .47/.59 (102) - .70/.93 (403) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - .88 (228) - - - - - - - .56 (355) .68 (70) .97 (652) Note: Means and standard deviations of all measures reported on a 1 to 5 scale. Numbers in parentheses represent total sample size for each figure. Correlations are reported as “raw/unattenuated.” The Nature of Procrastination 88 Table 3 A Meta-Analytic Summary of Procrastination’s Correlational Findings - 95% Interval r - 95% Interval Construct Divergent Validity Defensiveness K N r Confidence Credibility Residual Confidence Credibility Residual 11 1,512 -.18 -.37 to -.09 -.42 to .06 23 to 87% -.21 -.33 to -.11 -.49 to .07 21 to 87% Convergent Validity Other Report Delay Starting Tasks Lack of Task Progress Delay Finishing Tasks Missing Deadlines 6 3 7 17 7 986 197 927 2,087 533 .33 .37 .27 .31 .26 .24 to .42 .08 to .67 .15 to .39 .22 to .40 .15 to .37 .17 to .49 -.08 to .83 .01 to .54 -.02 to .64 .09 to .43 3 to 88% 7 to 96% 17 to 93% 63 to 91% 1 to 77% .38 .44 .32 .36 .31 .27 to .47 .09 to .79 .17 to .42 .24 to .43 .17 to .40 .20 to .57 -.03 to .92 .02 to .63 -.02 to .74 .10 to .52 3 to 88% 7 to 94% 16 to 92% 62 to 91% 1 to 77% The Nature of Procrastination 89 Table 4 A Meta-Analytic Summary of Procrastination’s Correlational Findings - 95% Interval r - 95% Interval K N r Confidence Credibility Residual Confidence Credibility Residual 8 10 938 1,069 .40 .40 .28 to .53 .29 to .50 .08 to .73 .12 to .67 43 to 94% 27 to 90% .44 .46 .30 to .57 .34 to .58 .10to .79 .14 to .79 42 to 94% 28 to 90% Trait Anxiety, Neuroticism, Negative Affect Trait Anxiety 28 5,470 .24 Neuroticism 17 3,594 .24 EPQ, BPP, & BFI 6 1,455 .13 NEO & EPI 11 1,911 .31 Negative Affect 7 1,299 .29 .20 to .27 .17 to .30 .03 to .23 .24 to .37 .22 to .35 .11 to .37 .00 to .47 -.08 to .34 .13 to .48 .16 to .41 14 to 70% 55 to 89% 9 to 93% 15 to 86% 1 to 80% .28 .27 .16 .35 .33 .23 to .32 .20 to .35 .04 to .28 .27 to .42 .25 to .41 .12 to .43 -.01 to .56 -.10 to .41 .14 to .56 .19 to .47 14 to 70% 56 to 89% 10 to 93% 19 to 87% 1 to 80% Irrational Beliefs, Fear of Failure, Perfectionism, Self-Consciousness, and Evaluation Anxiety Irrational Beliefs 14 2,384 .27 .19 to .34 .02 to .52 48 to 89% .32 .25 to .45 Fear of Failure 13 1,938 .14 .08 to .21 -.04 to .33 20 to 85% .17 .10 to .25 Perfectionism: Self 18 2,579 -.03 -.09 to .04 -.26 to .20 33 to 83% -.03 -.11 to .04 Perfectionism: Other 11 1,311 .02 -.07 to .11 -.22 to .26 14 to 85% .02 -.09 to .13 Perfectionism: Social 11 1,527 .20 .14 to .26 .08 to .32 1 to 70% .25 .17 to .32 Self-Conscious: Public 15 3,166 .21 .16 to .27 .05 to .38 20 to 82% .25 .20 to .34 Self-Conscious: Private 9 1,486 .19 .13 to .25 .08 to .31 1 to 73% .23 .16 to .32 Evaluation Anxiety 17 3,406 .21 .16 to .25 .07 to .35 10 to 77% .24 .18 to .29 .03 to .62 -.04 to .38 -.31 to .24 -.27 to .31 .11 to .40 .06 to .44 .09 to .36 .07to .41 47 to 89% 19 to 84% 33 to 83% 14 to 85% 1 to 68% 17 to 81% 1 to 73% 11 to 78% Construct Task Aversiveness Task Procrastination Trait Procrastination The Nature of Procrastination 90 Table 5 A Meta-Analytic Summary of Procrastination’s Correlational Findings - 95% Interval r - 95% Interval Construct K N Confidence Credibility r Self-Efficacy, Self-Esteem, and Self-Handicapping Self-Efficacy 22 3,717 -.45 -.49 to -.41 -.58 to -.31 Self-Esteem 33 5,846 -.26 -.30 to -.23 -.41 to -.12 Global Self-Esteem 30 5,448 -.27 -.31 to -.23 -.41 to -.13 Social Self-Esteem 3 398 -.16 -.41 to .09 -.56 to .34 Diff. Idnt. & Self-Hnd. 16 2,801 .45 .38 to .52 .22 to .68 Diffuse Identity 6 1,350 .39 .24 to .53 .04 to .73 Self-Handicapping 10 1,451 .51 .46 to .57 .41 to .62 Residual Confidence Credibility Residual 15 to 75% 22 to 71% 19 to 71% 5 to 98% 58 to 90% 62 to 97% 2 to 75% -.53 -.31 -.32 -.19 .58 .50 .65 -.61 to -.51 -.35 to -.26 -.36 to -.27 -.49 to .11 .51 to .69 .31 to .70 .62 to .77 -.68 to -.38 -.48 to -.13 -.49 to -.15 -.62 to .25 .30 to .86 .11 to .88 .49 to .80 11 to 73% 24 to 72% 21 to 72% 5 to 97% 54 to 89% 56 to 96% 3 to 79% Depression, Learned Helplessness, and Pessimism Depression 27 5,729 .28 .25 to .32 Energy 10 1,992 -.30 -.38 to -.22 Locus of Control (Ext.) 10 1,964 .27 .19 to .36 Pessimism 12 1,944 .14 .22 to .05 11 to 70% 30 to 90% 40 to 91% 37 to 89% .33 -.36 .33 .16 .29 to .37 -.45 to -.27 .24 to .46 .27 to .06 .20 to .47 -.61 to -.12 .06 to .61 -.12 to .44 11 to 70% 27 to 89% 35 to 91% 35 to 89% Extraversion: Positive Affect, Impulsiveness, Distractibility, and Sensation-Seeking Extraversion 14 3,244 -.05 -.17 to -05 -.47 to .38 82 to 96% NON-EPQ 12 2,892 -.10 -.16 to -.05 -.26 to .05 10 to 82% EPQ 2 352 .43 -.07 to .94 -.27 to .99 78 to 99% Positive Affect 9 1,840 -.22 -.28 to -.15 -.37 to -.07 5 to 84% Impulsiveness 16 2,885 .38 .33 to .43 .22 to .54 23 to 82% Distractibility 12 1,970 .47 .41 to .54 .31 to .64 18 to 85% Sensation-Seeking 9 1,818 .18 .13 to .22 -.13 to .49 57 to 95% -.07 -.13 .52 -.25 .45 .56 .21 -.20 to .09 -.19 to -.06 -.09 to .99 -.33 to -.18 .42 to .55 .55 to .71 .08 to .37 -.57 to .45 -.30 to .05 -.23 to .99 -.42 to -.08 .24 to .66 .35 to .77 -.15 to .57 82 to 96% 9 to 82% 77 to 99% 5 to 84% 31 to 84% 27 to 87% 57 to 95% .17 to .40 -.52 to -.09 .03 to .51 -.12 to .39 The Nature of Procrastination 91 Table 6 A Meta-Analytic Summary of Procrastination’s Correlational Findings - 95% Interval r - 95% Interval Construct K N Disagreeable: Rebellious & Hostile Disagreeable 9 2,623 Rebellious 10 2,126 Hostile 9 1,961 r Confidence Credibility Residual Confidence Credibility Residual .11 .12 .15 .03 to .19 .06 to .17 .08 to .21 -.11 to .32 -.01to .24 .00 to .30 36 to 92% 3 to 78% 5 to 84% .12 .14 .18 .03 to .22 .07 to .22 .10 to .27 -.13 to .38 -.01 to .29 .00 to .36 39 to 92% 3 to 78% 5 to 84% Openness to Experience: Intelligence Openness to Exp. 10 2,567 Intelligence 12 1,860 .06 .02 .00 to .12 -.05 to .09 -.09 to .22 -.17 to .22 9 to 85% 12 to 83% .07 .03 .00 to .15 -.06 to .11 -.10 to .25 -.21 to .26 8 to 85% 12 to 83% Conscientiousness: Self-Control, Organization, Achievement Motivation Conscientiousness 15 3,075 -.64 -.69 to -.59 -.79 to -.49 Self-Control 15 4,213 -.53 -.64 to -.42 -.94 to -.12 Self-Discipline 8 2,621 -.66 -.73 to -.59 -.84 to -.48 Organization 16 2,920 -.40 -.46 to -.33 -.61 to -.18 Achievement Motivat. 27 6,019 -.40 -.47 to -.33 -.75 to -.05 Need for Achiev. 14 3,210 -.47 -.54 to -.40 -.72 to -.22 Self-Regulation 7 1,481 -.54 -.64 to -.45 -.76 to -.32 49 to 89% 91 to 98% 66 to 96% 47 to 88% 84 to 95% 67 to 93% 36 to 94% -.75 -.62 -.77 -.47 -.48 -.55 -.63 -.82 to -.70 -.82 to -.54 -.99 to -.80 -.58 to -.42 -.57 to -.40 -.67 to -.49 -.77 to -.54 -.92 to -.57 -.99 to -.15 -.98 to -.56 -.73 to -.21 -.88 to -.07 -.84 to -.26 -.88 to -.38 50 to 89% 91 to 97% 66 to 96% 50 to 89% 83 to 94% 67 to 93% 35to 94% The Nature of Procrastination 92 Table 7 A Meta-Analytic Summary of Procrastination’s Correlational Findings - 95% Interval r - 95% Interval Construct K Aspects of Procrastination Dilatory Behavior 14 Intention 6 Intention-Action Gap 6 Performance GPA 15 Course GPA 8 Final Exam 10 Assignments 7 Demographics Age - Uncorrected Age - Corrected Sex (M=1, F=2) 14 14 35 N r Confidence Credibility Residual Confidence Credibility Residual 2,564 433 533 .50 .06 .29 .45 to .55 -.14 to .26 .17 to .41 .46 to .64 -.36 to .49 .08 to .50 17 to 83% 18 to 94% 2 to 85% .63 .07 .31 .55 to .68 -.16 to .31 .19 to .44 .47 to .80 -.42 to .56 .10 to .55 12 to 81% 18 to 94% 2 to 85% 3,220 1,814 851 1,087 -.14 -.26 -.18 -.31 -.19 to -.09 -.32 to -.19 -.33 to -.04 -.41 to -.21 -.29 to .00 -.40 to -.12 -.59 to .22 -.53 to -.09 10 to 79% 4 to 85% 48 to 93% 10 to 91% -.17 -.22 to -.10 -.30 -.35 to -.21 -.21 -.35 to -.04 -.37 -.45 to -.23 -.35 to .00 -.46 to -.15 -.67 to .25 -.64 to -.10 9 to 78% 3 to 83% 48 to 93% 10 to 91% 2,999 2,999 7,289 -.15 -.48 -.09 -.21 to -.09 -.58 to -.38 -.13 to -.05 -.33 to .02 -.84 to -.12 -.29 to .11 22 to 84% 4 to 75% 46 to 79% -.18 -.79 -.11 -.38 to .02 -.99 to -.55 -.40 to .18 21 to 84% 1 to 52% 52 to 82% -.23 to -.10 -.62 to -.41 -.14 to -.05