Journal of Consumer Research, Inc. Consumer Responses to Advertising: The Effects of Ad Content, Emotions, and Attitude toward the Ad on Viewing Time Author(s): Thomas J. Olney, Morris B. Holbrook, Rajeev Batra Reviewed work(s): Source: Journal of Consumer Research, Vol. 17, No. 4 (Mar., 1991), pp. 440-453 Published by: The University of Chicago Press Stable URL: http://www.jstor.org/stable/2626838 . Accessed: 16/02/2012 04:14 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org. The University of Chicago Press and Journal of Consumer Research, Inc. are collaborating with JSTOR to digitize, preserve and extend access to Journal of Consumer Research. http://www.jstor.org Consumer The Responses Effects Attitude of toward Ad Advertising: to Coontent, the Ad on Emotions, Viewing and Time THOMASJ. OLNEY MORRISB. HOLBROOK RAJEEVBATRA* This study develops and tests a hierarchicalmodel of advertising effects on viewing time. The ads studied represent a sample of commercials aired during prime-time broadcasts, and the effects are analyzed across the ads rather than across people. Primaryemphasis is placed on the attempt to explain a simulated behavioralmeasure of attention to television commercials-that of channel switching (zapping) and fastforwarding through ads on prerecorded programs (zipping). In addition, the study demonstrates a chain of effects from the content of television ads, through emotional reactions and attitude toward the ad, to actual viewing behaviors. Previous research on consumers' responses to ad- a video cassette. By contrast, zapping occurs during the broadcast itself and refers to the switching of the channel when a commercial appears. In either situation, exposure and attention are radically different from the comparatively passive nature of the old days when, stereotypically, viewers sat in front of their televisions and watched whatever paraded before their eyes. While nonviewing behaviors such as talking, reading, or leaving the room did exist even then (Anderson 1985), zipping and zapping have greatly amplified the extent to which advertising viewing can be, and is, avoided. Indeed, studies in both the United States (Heeter and Greenberg 1985; IRI Information Resources 1983, 1985; Kaplan 1985) and Great Britain (Yorke and Kitchen 1985) have shown the pervasiveness of both phenomena. vertising has begun to establish a hierarchical model of advertising effects (for reviews, see Holbrook [1986] and Preston [1982]). Measures of advertising effects have thus far spanned all levels in the hierarchy, moving backward from behavior (sales) to affect (attitude toward the brand or ad) to cognition (beliefs, evaluative judgments) to attention or exposure (readership or viewership). All of these are important to the attainment of advertising objectives. However, emerging technological developments have lately given consumer researchers reason to put renewed emphasis on the nature and antecedents of the attention and exposure variables that form the very first step in the hierarchy. Specifically, the development of remote control devices and VCRs has led to two practices that have dramatically altered the relationship between television viewing and advertising exposure or attentionnamely, zipping and zapping. Some confusion has existed in the popular press over these terms. In our usage, zipping refers to fast-forwarding through ads previously recorded along with program material on THE STUDY Given this recent development, the present study uses a representative sample of television commercials to examine the advertising-related antecedents of viewing time. Specifically, the study proposes a behavioral measure of consumers' viewing responses to television commercials based on a simulation of zipping and zapping as indicants of attention to the ad. The antecedents of the measure that it investigated are a multicomponent representation of attitude toward the ad, two dimensions of emotional responses, and various aspects of advertising content. In particular, the study focuses on the variance in viewing time explained by three attitudinal components (hedonism, utilitarianism, and interestinrness)0 be two emotional *T. J. Olney is assistant professor, Western Washington University, Bellingham, WA 98225. Morris B. Holbrook is the Dillard Professor of Business, Graduate School of Business, Columbia University, New York, NY 10027. Rajeev Batra is associate professor, School of Business Administration, University of Michigan, Ann Arbor, MI 48109. The authors gratefully acknowledge the support of the Columbia Business School's Faculty Research Fund and the Faculty Development Fund of Western Washington University's College of Business and Economics. 440 ?3 1991 by JOURNAL OF CONSUMER RESEARCH, Inc. e Vol. 17 * March 1991 All rights reserved. 0093-5301/91/1704-0007$02.00 EFFECTS ON VIEWING TIMEIM4 FIGURE 1 HIERARCHICALMODELOF ADVERTISINGEFFECTS Ad content II(Appeals) l AC 4d content Emotional dimensions | (Uniqueness) } (Pleasure and Arousal) | Attitudinal components (Hedonism, Utilitarianism,, Interestingness) | Viewing Time (zipping and zapping) dimensions (pleasure and arousal), and by the uniqueness of ad content (versus a more standard set of advertising appeals). Additionally, the study examines the mediating roles of intervening variables along a hierarchical chain of effects in which advertising content influences emotions and attitude toward the ad, which, in turn, influence viewing time. 2. follows a practice common in advertising research by treating the ad itself as the unit of analysis and examining relationships across ads at the aggregate level, The Model 4. views these separate samples of judges as providing content analyses and related response measures for the television commercials of interest, Our tentative model for the hierarchical chain that culminates in viewing time appears in Figure 1. As shown by the diagram, we assume a forward recursive flow of effects from ad content through emotions and attitudinal responses to viewing behavior. Working backward, we assume that viewing time depends directly on three components of attitude toward the adnamely, hedonism, utilitarianism, and interestingness. These three influences on viewing time depend, in turn, on emotional responses to the ad (we focus primarily on the emotional dimensions of pleasure and arousal). Finally, we assume that these emotional responses reflect advertising content (with respect to both the ad appeals used and the uniqueness of the ad). In general, then, we view emotional responses and the three attitudinal components as intervening variables that mediate the relationship between ad content and viewing time. The question marks in the diagram indicate the issue of whether a variable exerts a direct effect beyond its indirect effect via mediation. General Analytic Approach Our model of hierarchical effects raises a number of issues that require empirical investigation. To that end, the present study follows a procedure developed by (among others) Holbrook and Batra (1987) in a different context. Specifically, as applied here, this approach 1. tracesa hierarchicalchain of effectsfrom ad content through emotional responses and attitude toward the ad to viewing time (the criterion variable), 3. guards against method artifacts by using separate samples of judges to provide independently obtained measures of the variables at each stage of the model, 5. tests for mediating effects via the rule that Y mediates the effect of X on Z if and only if (1) X is related to Z, (2) Y is related to Z, (3) X is related to Y, and (4) when Z is regressed on X and Y is controlled for, the significance of X in explaining Z decreases (partial mediation) or disappears entirely (complete mediation; see Baron and Kenny 1986). Key Variables Viewing Time (Zipping and Zapping). As discussed earlier, zapping is the act of using a remote control device to change the channel when a commercial comes on. By contrast, zipping refers only to prerecorded programs on video and occurs when the viewer uses the controls of a VCR to fast-forward through commercials. While both zipping and zapping have attracted much attention over the past few years, neither has been thoroughly studied, in part because both remain somewhat intractable in the practical problems they present to the researcher. In the absence of such research, doubt lingers regarding whether zipping and zapping behaviors are simply different manifestations of the same phenomenon. Conceptually, since both represent different ways of decreasing viewing time of commercials, one would expect zipping and zapping to be strongly interrelated. Indeed, theory drawn from psychology in general (see, e.g., Kahneman 1973) and from consumer behavior in particular (see, e.g., Bettman 1979) suggests that both phenomena represent attention as 442 measured by viewing time. In general, the use of looking time to measure attention has a venerable history in the psychological literature on exploratory behavior (see, e.g., Berlyne 1960). In this tradition, looking time has been related to the novelty of stimuli (Leckart 1966; Leckart and Bakan 1965, 1969) and to such other collative properties as uncertainty and complexity (Berlyne 1958, 1963). Looking time has also prompted some applications in advertising research in which, for example, greater visual complexity has been shown to increase the length of time that subjects spend looking at print ads presented with a slide projector (Morrison and Dainoff 1972). Hence, we investigate whether zipping and zapping appear to constitute cognate phenomena. In sum, as indicated by the diagram shown in Figure 1, the present study focuses on looking time as the key outcome of a hierarchical model that, in the spirit of Berlyne (1960), considers viewing behavior as dependent on such antecedent variables as the effects of advertising uniqueness, as mediated by emotional arousal and attitudinal interest. Attitude toward the Ad. A review of recent literature on attitude toward the ad indicates that there is probably more to this variable than overall evaluation as captured by a unidimensional global affect. For example, several recent studies have used a four-item index (good-bad, like-dislike, irritating-not irritating, and uninteresting-interesting; Gardner 1985; Mitchell 1986b; Mitchell and Olson 1981), yet these four items accounted for only 68 percent of the evaluative variance in the study in which they were first used (Mitchell and Olson 1981). This suggests that attitude toward the ad involves additional phenomena that might be captured by other measures. Indeed, related work by Batra and Ahtola (1991) supports the notion that attitude involves more than just an overall, unidimensional evaluative measure of global affect. That study found two dimensions of attitude-one labeled "hedonic" and the other "utilitarian." Of these, the hedonic dimension (corresponding to an evaluation of pleasure) appears to resemble the "entertaining" dimension discussed in earlier copy-testing research by Schlinger (1979), which rated the ad on being "pleasurable," and the "humor" dimension of Wells, Leavitt, and McConville (1971), which rated the ad on its "playfulness." The utilitarian attitude component, conversely, evaluates the ad on how useful it is and appears to correspond to Schlinger's "relevant news" dimension ("useful") and to Wells et al.'s "personal relevance" factor ("important to me, valuable"). Clearly, it is of interest to see if these two attitude components have differential relationships to adviewing time. Further, the frequent use of interestingness as part of a multi-item measure of global attitude toward the ad (Gardner 1985; Lutz, MacKenzie, and Belch 1983; MacKenzie, Lutz, and Belch 1986; Mitchell 1986b; JOURNAL OF CONSUMER RESEARCH Mitchell and Olson 1981) raises an issue that suggests another potential research opportunity. Specifically, research by Berlyne (1960) and his colleagues has consistently found a nonmonotonic (inverted-U-shaped) relation between interestingness and overall liking, suggesting that interestingness should be kept separate rather than combined into one global measure of overall attitude toward the ad. Previous empirical research on attitude toward the ad has tended to focus primarily on establishing ad attitude as of theoretical and practical importance in mediating advertising effectiveness, without developing the nature of this construct more precisely. As two exceptions, Burke and Edell (1986) investigated a dimensional representation of attitude toward the ad based on a combination of 38 adjectives, while Madden, Allen, and Twible (1988)-following Shimp (1981)-pursued an attempt to decompose attitude toward the ad into its cognitive and affective components. Such empirical research is in keeping with the theoretical framework developed by MacKenzie and Lutz (1989), who suggest various antecedents of overall attitude toward the ad. The present study, which looks at specific components, builds on such efforts by examining a multidimensional structure of attitude toward the ad based on three attitudinal componentshedonism, utilitarianism, and interestingness-the first two taken from Batra and Ahtola (1991), and the third from Berlyne (1960). Thus, in this conception, instead of evaluating ad attitudes through overall items (such as good-bad, likedislike), we use items for each specific component: hedonism (an evaluation along the entertainment dimension), utilitarianism (an evaluation of usefulness), and interestingness (an evaluation of curiosity). Such disaggregation will permit the study of the possibly differing behavioral (viewing) effects of each of these attitudinal components. Thus, in the hierarchical model of advertising responses (Fig. 1), viewing time depends on these three attitudinal components, which depend, in turn, on emotions and advertising content. Emotional Dimensions. Thanks to calls for examining the role of emotions and affect in advertising (e.g., Batra and Ray 1986; Holbrook and O'Shaughnessy 1984; Mitchell 1986a), abundant current research indicates that we can view the place of emotion in advertising from diverse perspectives. These include the warmth focus of Aaker, Stayman, and Hagerty (1986), the irritation concerns of Aaker and Bruzzone (1985), the use of a large battery of subjective feelings by Edell and Burke (1987), the Izard (1977) DES-II emotional measurement instrument adopted by Westbrook (1987), and investigations into the interactions between ads and their program context (Goldberg and Gorn 1987). Aaker, Stayman, and Vezina (1988) provide an impressive inventory of feelings elicited by ad- EFFECTS ON VIEWINGTIME vertising. Batra and Holbrook (1990) pursue similar ends in creating an affective typology. Thus, one finds a variety of competing perspectives on the measurement of emotions in advertising from which to choose. However, the emotional measurement system that has probably received the greatest attention from consumer researchers thus far is the PAD scheme for assessing the emotional dimensions of pleasure, arousal, and dominance (Mehrabian and Russell 1974). The Mehrabian-Russell PAD dimensions have been employed by such researchers as Christ (1985), Christ and Biggers (1984), Donovan and Rossiter (1982), and Holbrook et al. (1984). Further, using principal components analysis on a battery of emotional items derived from many different sources, Holbrook and Batra (1987) recovered these three emotional dimensions of pleasure, arousal, and domination. Recently, Russell (1980; Russell, Weiss, and Mendelsohn 1989) has suggested that the third dimension (dominance) can be dispensed with. Although this remains an empirical question, in the present study, we found no important effects of dominance. Hence, we shall discuss only the roles of pleasure and arousal. Specifically, as indicated by the hierarchical model in Figure 1, we propose that pleasure and arousal should intervene between ad content and attitude toward the ad in explaining viewing time. Here, in particular, it makes sense to argue that interestingness should reflect arousal, which should, in turn, depend on the uniqueness of ad content (as discussed below). Meanwhile, hedonism should depend on pleasure, which should reach its peak at an intermediate level of uniqueness (also discussed below). Ad Content. The present study employs measures of advertising appeals drawn from a variety of sources (e.g., Holbrook and Batra 1987; Schlinger 1979; Stewart and Furse 1984; Wells 1964; Wells et al. 1971). However, because of our focus on attention as measured by viewing time and on the relevance of the work by Berlyne, we thought it appropriate to give special emphasis to the aspects of advertising content related to uniqueness. Berlyne (1960) developed a set of variables that represent the amount of new information in a stimulus, especially as it relates to previously encountered stimuli. These include such properties as novelty, surprise, complexity, and uncertainty. Berlyne found a consistent relationship between these properties and the amount of attention paid to a stimulus. This relationship has generally assumed the form of an inverted U, with maximum attention paid to stimuli at intermediate levels of novelty, surprise, complexity, or uncertainty. Hence, we would expect the same nonmonotonic relationship between viewing time for ads and their levels of these properties in general. Additionally, Berlyne's (1971) later work on aesthetics suggests that these stimulus properties should also have a non- 443 monotonic effect on the emotional dimension of pleasure and the hedonism component of attitude toward the ad. Previous advertising research has examined the informativeness of ads with respect to the usefulness of that information (Marquez 1977; Pollay, Zaichkowsky, and Fryer 1980; Resnik and Stern 1977). Despite this literature, some doubt remains concerning how one should assess new information (novelty) in the present context. From one perspective, which we shall call "uniqueness," novelty represents the degree to which a particular ad differs from other exemplars; this perspective is similar to that of Mandler (1982), whose work suggests that we might view the novelty of a television commercial as an incongruity between a viewer's existing schema for television commercials and the nature of the commercial in question. From another perspective, which we might call "familiarity," novelty depends on an individual's (lack of) prior experience with a given ad or brand (cf. Baker et al. 1986). From the Berlynian viewpoint, both seem relevant. However, the nature of our design (which involved assessing advertising content after the ads had already appeared on television) impaired our ability to rely confidently on the use of judges in content analysis to measure the familiarity of the commercials. Hence, we shall focus here on those results that bear on the judges' assessments of advertising uniqueness (i.e., the extent to which a commercial differs from other advertising). Research Questions and Hypotheses As its main thrust, this study attempts to develop a model for the explanation of viewing time. Each set of variables (ad content, emotional responses, attitude toward the ad) was expected to influence viewing time to some extent. In particular, we expected that viewing time would respond to uniqueness according to the aforementioned nonmonotonic function. Further, we expected that this inverted-U-shaped relationship would be fully or partially mediated by the positive intervening effects of both the emotional dimensions (pleasure and arousal) and two of the ad-attitude components (hedonism and interestingness). We left the directions of the effects of the specific ad-content factors and the possible role of utilitarianism as research questions for exploratory investigation. METHOD The Unit of Analysis The present study continues the tradition established by advertising researchers such as Wells (1964), Wells et al. (1971), Schlinger (1979), Holbrook and Lehmann (1980), Stewart and Furse (1985, 1986), Pechmann and Stewart (1985), Holbrook and Batra (1987), and Thorson, Heide, and Page (1987), in which the ad itself is JOURNAL OF CONSUMER RESEARCH 444 the unit of analysis, and the measurements of ad-related factors involve assessments made by samples of judges who perform a role closely akin to that more generally associated with content analysis (Holsti 1969; Krippendorff 1980; Weber 1985). This use of content analysis in a consumer-behavior context follows suggestions made by Kassarjian (1977) and Holbrook (1977) regarding the rich potential of the method for researching the nature of consumer-directed communications and their effects. Notice that our approach departs somewhat from the emphasis on objective assessment of message elements that is normally associated with content analysis, and this departure increases as we move from analysis of ad content to measures of emotion and attitude (see Fig. 1). Specifically, our measures of ad content (discussed later) are intended to provide relatively objective assessments of the appeals and uniqueness associated with the message. By contrast, the emotional measures include a subjective aspect related to how the judge feels when watching the ad (happy or unhappy, etc.). Finally, the attitudinal measures impose a layer of evaluative judgments on the viewing experience (entertaining or not entertaining, etc.). In these more subjective and evaluative types of ratings, one hopes for intersubjective validity based on consensus rather than any stricter type of objectivity. Notice also that this aspect of our method causes certain closely related aspects of advertising content and subjective responses to reappear under different interpretations at succeeding stages of the hierarchical chain. For example, as one aspect of ad content, an "enjoyment" appeal was rated for each ad by the judges. In reporting emotions, a separate set of judges assessed how strongly the ad contributed to their pleasure on such items as "happy-sad." Still another set of judges evaluated the ad on its degree of hedonism with respect to such terms as "entertaining." Clearly, one would expect those particular facets of the overall hierarchical model to be related: enjoyment appeals should enhance pleasure, which, in turn, should contribute to hedonism. Indeed, the need to avoid sharedmethods variance attributable to lexical redundancy among these and other subsets of items across types of measures is the primary reason for collecting our ratings of ads at the different stages of the model from independent samples of judges (cf. MacKenzie et al. 1986). Notice finally that in treating the ad (rather than the respondent) as the unit of analysis, we run counter to Edell and Burke's emphasis on the importance of analyzing feelings across respondents (rather than across ads). Specifically, Edell and Burke (1987, p. 430) argue that "feelings appearto be properties of the individual" and conclude that "feelings . . . may not be appropriate descriptors of ads." We agree completely that people may differ in their emotional responses to an ad. However, we would amplify Edell and Burke's argument to suggest that feelings result from the interaction of people with ads. Though both sides of the interaction are important, one can legitimately focus on either side. Edell and Burke have chosen to examine the psychological process at the individual level. For some purposes, however, one may wish to focus on the hierarchical effects of the ads themselves. For example, getting favorable results in the marketplace may depend on finding and manipulating emotional aspects of advertising that are relatively homogeneous across members of the audience (thereby obtaining high intersubjective agreement). If the consumers in a target segment all respond differently to the emotional content of a firm's ad, its effects on market behavior may disappear. Hence, a focus on the ad as the unit of analysis remains relevant to those concerned with outcomes in terms of advertising effectiveness and other marketing-related variables. The Sample We created the sample of ads for the present study by taping prime-time television in a northeastern city on random nights for a week, numbering all the distinct 30-second commercials that appeared on the tapes, and then randomly choosing a sample of 150 ads. Given this procedure, our sample included commercials for both national and regional goods and services. These ads were then edited by a video production company onto three different tapes (described later). However, because of technical problems, four of the 150 were lost, leaving 146 ads in the final sample. This sample tends to represent what viewers actually watch and, as such, departs from other research in which the ads have reflected a particular range of emotions or executions of special interest to the investigators. Specifically, instead of choosing ads to cover as wide a range of emotional responses as possible, our study uses a sample representative of ads actually broadcast to estimate the hierarchical model of advertising effects. This allows us to draw conclusions about what ads actually do, whereas conclusions drawn from carefully chosen samples of ads tell us more about what ads can do (Douglas M. Stayman, conversation with authors, 1986). Hence, in this sense, any findings that emerge from the present study should represent typical commercials, at least for prime-time television during the late 1980s in the Northeast. The Judges For each level of the hierarchical model shown in Figure 1, different judges responded to the ads on the variables of interest. That is, separate samples ofjudges evaluated the ads for the types of salient appeals, uniqueness, the emotional response dimensions (pleasure and arousal), the components of attitude toward EFFECTS ON VIEWINGTIME the ad (hedonism, utilitarianism, and interestingness), and viewing behavior (zipping and zapping). This approach assumes homogeneity among separate samples of judges. To this end, all judges and behavioral viewers came from a pool of business students with no more exposure to academic marketing than a first course at the MBA level. Wherever possible, the various judging tasks were assigned randomly. For some of the measures, especially those involving lengthy sets of ratings, judges received a token payment for their participation. For other measures, especially those based on zipping and zapping behavior, respondents fulfilled a course requirement for the aforementioned first marketing course. Details on each measurement and the relevant respondents follow. The Measures Viewing Time. Combining two behavioral assessments from two separate conditions into one variable (Viewing Time) provides our operationalization of the theoretical construct of attention (our main criterion variable as measured by looking behavior). Specifically, in this study, viewers recruited from the general pool of MBA students and tested in private screenings watched 7 5 minutes of ads in either a simulated zipping or a simulated zapping condition. On each day of testing, subjects all performed either the zipping or the zapping simulation. Sets of subjects were randomly assigned to the two conditions, so that 50 viewers saw the ads in the zipping condition, and 52 in the zapping condition. In the zipping condition, the 146 ads appeared on a tape in random order with the full sequence repeated again after the last ad. The production company had inserted a red and white sign saying "stop" between each of the ads. Viewers were equipped with a remote control device that allowed them to speed up or stop the VCR. As the session began, the experimenter demonstrated the operation of the VCR, which started at random positions on the tape, and subjects watched a sample series of ads. Then they were instructed to watch the tape and to use the fast-forward or pause button, however they chose, with the proviso that whenever they saw a stop sign, they should momentarily switch back to regular play if they were fastforwarding. Further, they were instructed to watch the tape for a total of 75 minutes (the normal playing time of the tape) and, if they reached the end of the tape before this time, they were to rewind it and continue watching until the experimenter returned to indicate the end of the session. Viewer behavior was recorded by another VCR that taped everything transpiring on the monitor as seen and controlled by the viewer. The zapping condition used two tapes with different random orders of the ads, this time with no pauses between commercials. Again viewers began at random 445 starting points on both tapes in the zapping simulation. The two tapes were played on separate videocassette recorders running simultaneously. Viewers controlled which tape they watched by means of an A/B cable push-button switch of the kind used for switching between two signals in multi-source installations. Mounted on a stand, this switch permitted the viewer to execute a clean zap from one channel to the other and back. The initial starting position of the switch was also randomized for each viewer. Viewers were instructed to watch the ads and to use the switch as they chose. Before the tapes began rolling, viewers were asked to push the buttons once or twice to get a feel for it. This demonstrated to them that they had a choice of two channels to watch. As in the zipping condition, another VCR recorded everything that actually appeared on the screen as controlled by the viewer. Because of the randomization, it remained entirely possible for an individual never to see any given ad, clearly a realistic aspect of the simulation. For both zipping and zapping, data for Viewing Time was obtained by using an ordinary stopwatch to record the amount of time each ad appeared on each viewer's monitor tape at normal speed. Commercial Appeals. To understand the kinds of appeals likely to demonstrate the greatest effect, we culled 34 items from 66 items used in an earlier study by Holbrook and Batra (1987). Specifically, 25 of these items came directly from one of the three measurement instruments in that study, and the remaining nine items, which needed rewording, were taken from the other two instruments. The resulting set of 34 appeals, listed in Exhibit 1, was presented in random order, and each item was rated within a seven-position range from weak to strong. Using this type of rating task as the basis for content analysis precludes the need to provide judges with the sorts of detailed coding instructions and category definitions normally associated with this procedure (assuming, of course, that satisfactory interjudge reliability can be attained on the basis of the item names themselves). Thus, 12 judges for content analysis were paid simply to rate each ad from "weakly" to "strongly" on its use of each appeal. Judges identified and rated each ad on a sheet of paper while viewing the zipping tape, which provided the stimuli for all the judgment tasks. For the measures of ad appeals, judges started at staggered points on the tape to minimize the sequence effects inherent in taped stimuli. Completing the judging task for ad appeals required about four hours per judge. Content judges performed the rating task individually in a room by themselves and remained in the room the entire time except for short breaks. Uniqueness. A battery of 18 items represented the novelty-related factors studied by Berlyne (1960). However, because of the possible effects of elapsed time 446 JOURNAL OF CONSUMER RESEARCH EXHIBIT1 ASSESSMENT ITEMS Ad content Ad appeals (rated from weak to strong over a seven-position range) Convenience Artistic merit Health and well-being Beauty Fear Superior design Duty Comfort Rational appeal Product features Guarantees Price or value Spirituality Sex appeal Status Enjoyment Status Emotional appeal Slice of life Loyalty of existing customers Evaluation appeal Self-esteem Efficiency and performance Competence enhancement Virtue Solution to a problem Company image, reputation Craftsmanship Safety Sensory character (taste, smell) Appetite appeal (hunger, desire) Attributes, ingredients, components Aesthetics Quality Factual information Uniqueness (bipolaradjectives rated over a seven-position range) Peculiar-ordinary Just like any other ad-different from any other ad Average-special Weird-normal Nothing special-outstanding Emotional dimensions of response Pleasure Happy-unhappy Pleased-annoyed Satisfied-unsatisfied Contented-melancholic Hopeful-despairing Relaxed-bored Arousal Stimulated-relaxed Excited-calm Frenzied-sluggish Jittery-dull Wide awake-sleepy Aroused-unaroused Attitudinalcomponents Hedonism Unpleasant-pleasant Fun to watch-not fun to watch Not entertaining-entertaining Enjoyable-not enjoyable Utilitarianism Important-not important Informative-uninformative Helpful-not helpful Useful-not useful Interestingness Makes me curious-does not make me curious Not boring-boring Interesting-not interesting Keeps my attention-does not keep my attention in our data collection methodology, as previously mentioned, we felt that items intended to assess familiarity should not be used for the present study. We therefore confined our attention to five pairs of bipolar adjectives intended to represent uniqueness. As listed in Exhibit 1, these were presented in random order and with their directions randomized within a sevenposition check-mark format. A separate group of 12 paid judges rated the ads on the novelty-related items. With fewer items for this set of measures, the time required to complete the rating task was somewhat less than that for the ad appeals-about three and a half hours, including breaks. Emotional Measures. Another independent group of separate judges rated the ads on a set of 18 items developed by Mehrabian and Russell (1974) to assess emotional response. The six items used to assess the emotional dimension of pleasure and the six assessing arousal are listed in Exhibit 1. The remaining six items represented dominance, but, as previously noted, these showed no important effects and will not be pursued further in the present discussion. All items were presented in random order with a seven-position rating format. Unpaid graduate students (from the same overall pool as for the other measures) watched 30 of the commercials and rated their feelings toward each. As with other measures, to reduce the sequence effects inherent in taped stimuli, judges began at random starting points on the randomized zipping tape. Each ad re- 447 EFFECTS ON VIEWINGTIME ceived 12-15 ratings for each of the two emotion instruments. Judges for these two sets of measures came from an introductory MBA marketing class in which the research participation satisfied a course requirement. They required 48-80 minutes to complete the rating of 30 ads. Attitudinal Components. Measures of the three selected components of attitude toward the ad again employed 12 paid judges drawn from the same general pool of students after it was verified that they had not participated in any of the other judgment tasks. Judges rated their attitudes toward the ad on separate fouritem indices of Hedonism, Utilitarianism, and Interestingness on a check-mark bipolar format with seven positions. The items, appearing in Exhibit 1, were randomized in both order and direction. As before, judges began at starting points systematically varied along the randomized tape containing the ads to reduce sequence effects. Judges watched each ad and then responded to all attitudinal items for that ad before viewing the next one on the tape. The total time required for each judge to complete this measurement task was 2-3 hours. Timing Because of limitations in our available financial resources, we could not collect all of the measures just described simultaneously. We did manage to obtain the zipping and zapping measures within a few weeks of the time the commercials were taped from primetime television. However, there was a six-month delay in obtaining the emotion measures, followed by a similar delay in collecting the ad-attitude and ad-content measures. As previously mentioned, possible distortions due to this latter delay caused us to drop the familiarity measures from the items intended to represent novelty and to focus instead on the measures of uniqueness. It should be noted that, if anything, the timing factors pertinent to our study should exert a downward bias on our ability to find the hypothesized relationships under investigation, since they would weaken observed relationships. Hence, our approach appears to be conservative in this respect. Data Transformations As previously described, judges provided the measures for nearly all the variables in the model, with the major exception of the behavioral measures of the ultimate criterion variables, zipping and zapping. In the case of the emotion measures, for which each ad was judged by 12-15 judges, the ratings of the twelfth judge and any beyond the twelfth were combined and averaged to form a twelfth pseudojudge so as to attain comparability for purposes of assessing reliabilities. To enable an across-ads analysis, we first computed mean values for each measured variable across judges for each ad. This resulted in a final data set consisting of 146 observations on each variable, one observation per ad. Assessment of Reliabilities The nature of the measurement task required that reliabilities be assessed on each of the separate items and indices-specifically, for those involving the appeals, uniqueness, emotional, and attitudinal items. Coefficient alpha provided a suitable method for assessing these reliabilities in all possible configurations: for individual items across judges, for indices within judges, for within-judge indices across all judges, and for the aggregate index composed of the mean of all judges on each item. (For brevity, not all of these reliabilities are reported in what follows; those not mentioned can be obtained by writing to the first author.) Principal Component Scores To remove multicollinearity from the subsequent regressions, principal components analyses were performed on the appropriate sets of content, emotional, and attitudinal items. These created uncorrelated standardized component scores for use as independent variables. To retain the a priori Uniqueness measures of interest in the ad-content judgments while removing any remaining correlations between the Uniqueness and the ad-appeals measures, the effects of Uniqueness and Uniqueness Squared were partialed out of the ad-appeals scores before performing an analysis of principal components on the latter variables. In other words, each ad appeal was regressed on Uniqueness and Uniqueness Squared, with analysis of principal components performed on the residuals. This step removed all multicollinearity from the ad-content measures and yielded ad-content factors totally orthogonal to judgments of the ad's uniqueness. Model Testing As the model proposed is fully recursive, OLS regressions provided standardized beta weights and appropriate tests of significance to answer the questions raised earlier. In general, our procedure followed the logic described regarding the nature of a mediating effect (Baron and Kenny 1986). In particular, with respect to the question of whether emotions and attitudinal components play an intervening role in the relationship between ad content and viewing time, full or partial mediation can be inferred if and only if the following conditions are met: (1) ad content explains viewing time; (2) emotions and attitudinal components together explain viewing time; (3) ad content explains emotions; (4) ad content and emotions together explain attitudinal components; (5) the effect of ad con- JOURNAL OF CONSUMER RESEARCH 448 tent on viewing time declines (partial mediation) or disappears (full mediation) when the effects of emotions and attitudinal components are statistically controlled for in explaining viewing time (via multiple regression): ad content, emotions, and attitudinal components together explain viewing time. RESULTS Reliabilities and Validities of the Measures Viewing Time: The Zipping and Zapping Measures. As we expected, across the 146 ads, the viewing-time measures showed a high degree of intercorrelation (r = .75). For this reason, we combined the standardized values for these measures into a two-item index of Viewing Time. Advertising Content: Appeals and Uniqueness. Alphas for single-item interjudge reliabilities on each of the 34 ad-appeal items ranged from a high of .92 for the appetite appeal to a low of .3 1 for the evaluative appeal, with a median of .76. The five items for Uniqueness attained interjudge reliabilities ranging from a low of .84 for "weird" to a high of .87 for "average," with a median of .86. A more important measure of reliability concerns that for the index formed by summing the Uniqueness measures across all items within each judge and then calculating the interjudge reliability on that sum; the resulting coefficient alpha for interjudge reliability was .89. Finally, the multiitem reliability for across-judge averages is .97 for the five Uniqueness items. Advertising Content: Principal Components. For the cleanest possible measure of Uniqueness, we performed a principal components analysis on the five Uniqueness measures. This process resulted in a first factor explaining 88 percent of the variance. Standardized scores on this first principal component were calculated and used as the measure of Uniqueness in all further analyses. As previously stated, the measures of ad appeals were regressed on Uniqueness and Uniqueness Squared to remove any correlations between the Uniqueness and ad-appeals variables, with principal components analysis performed on the residuals. The pattern of eigenvalues suggested retaining either a four-factor solution (which explained 62 percent of the variance) or a twofactor solution (which explained 42 percent of the variance). After varimax rotation, we found the latter, more parsimonious solution to be more interpretable, as the two factors clearly suggested the traditional distinction between "facts" (e.g., efficiency, convenience, rational, and factual appeals) and "feelings" (e.g., aesthetic, artistic, emotional, and beauty appeals). And, in subsequent regressions, the four factors explained only marginally greater variance in viewing time than did the two first factors alone. We therefore retained these two factors, hereafter called Facts and Feelings, along with the aforementioned factor of Uniqueness and Uniqueness Squared, as our measures of advertising content. Emotional Indices: Pleasure and Arousal. The single-item interjudge reliabilities for the emotional items ranged from .79 for "wide awake" to .53 for "contented," with a median of .70. As one would expect, the multi-item reliabilities of the six-item indices based on scores averaged across judges were higher, .95 for Pleasure and .97 for Arousal. Our averaged multi-item emotional indices, therefore, benefit from the variance-reducing tendencies inherent in taking averages of averages (a helpful feature of our design). As a check on the dimensional structure of the emotions, we performed a principal components analysis on the across-judge means for the full set of items. After a varimax rotation, the structure of the factor loadings corroborated the anticipated pattern. Hence, to take advantage of their freedom from intercorrelations, we computed the rotated component scores for Pleasure and Arousal and used these uncorrelated emotional dimensions for all subsequent analyses. Attitude toward the Ad. For attitude toward the ad, each item belonged to one of three a priori attitude indices. The reliability for individual items, as measured by the interjudge coefficient alpha, ranged from .87 for "the ad is entertaining" to .65 for "makes me curious," with a median of .80. The multi-item reliabilities for the four-item indices averaged across judges were .95, .90, and .94 for Hedonism, Utilitarianism, and Interestingness, respectively. As a check on the structure of our attitude toward the ad indices, the 12 relevant mean across-judge items were subjected to principal components analysis. The first three components accounted for 91 percent of the variance in these data and, after varimax rotation, faithfully recreated the a priori indices of Hedonism, Utilitarianism, and Interestingness. Accordingly, to avoid multicollinearity among the attitudinal components, we used scores on each factor in all subsequent analyses. Research Questions and Hypotheses Tables 1 and 2 indicate the beta coefficients and R2s obtained when various combinations of the independent variables are used to predict the dependent measures of interest. Viewing Time. Table 1 presents the key regression results for Viewing Time as the dependent variable. Column 1 shows that Viewing Time depends strongly on the ad-content variables. The expected nonmonotonic effects of Uniqueness are reflected in the significance of both terms, and there is an exploratory but plausible positive effect of Feelings and a negative effect of Facts. When considered in isolation (col. 2), the EFFECTS ON VIEWINGTIME 449 TABLE 1 HIERARCHICALREGRESSION ANALYSIS OF CONTRIBUTIONSTO VIEWINGTIME (STANDARDIZEDBETA WEIGHTS,R2s, AND HIERARCHICAL F TESTS) Viewing time (dependent variable) Independent variables Ad content: Facts Feelings Uniqueness Uniqueness Squared Emotions: Pleasure Arousal Attitudinalcomponents: Hedonism Utilitarianism Interestingness R2 HierarchicalF tests: a Ad content Emotions Attitude components Emotions and attitude components 1 2 3 4 -.11 .34 .67 -.24 -.14* .22 .24* .12+ .19** .35 .55 54** 5 .43** .41 -.14** .64 .32 -.15** .50 .60** .63** 41 .59 53.01* 71.02**** 4.67* 24.81 .06 (NS) .19** .16** -.00 (NS) .37 .67** 4.97*** 4.29* 6.79* 10.95**** a F is the test statistic indicating the significance of the incremental change in R2 that results from adding the designated set of variables to the equation. +p < .10. p < .05. p < .01. p <.001. ****p <.0001. emotional dimensions also predict Viewing Time, via the expected positive contribution of both Pleasure and Arousal. Viewing Time depends strongly on the attitudinal components as well, reflected by highly significant positive contributions from Hedonism and Interestingness and by a significant negative contribution from Utilitarianism (see col. 3). Mediation. We next discuss how emotions and ad attitudes intervene in the relationship between ad content and Viewing Time. Here, we use the five conditions needed to establish mediation (as previously summarized). We have shown that Viewing Time depends strongly on the ad-content variables (condition 1), and Table 1 shows that Viewing Time also depends on the emotions and attitudinal components jointly (condition 2). Columns 1 and 2 of Table 2 show that ad content significantly influences Pleasure and Arousal, thus satisfying condition 3; further, columns 9-1 1 of Table 2 show that ad content and the emotions significantly explain Hedonism, Utilitarianism, and Interestingness, so that condition 4 is also met. With respect to condition 5, column 5 of Table 1 shows that the effects of ad content on Viewing Time are reduced in strength and significance (from F(4,141) = 41.59, p < .0001, to F(4, 136) = 4.97, p < .001) when emotions and attitudinal components are added to the equation predicting Viewing Time. Thus, emotions and attitudinal components do appear to intervene between ad content and Viewing Time. However, this mediation of the effects of ad content on Viewing Time is only partial. Table 1 shows that Facts, Feelings, Uniqueness, and Uniqueness Squared remain significant (p < .05 or better) in predicting Viewing Time when the emotions and attitudinal components are controlled for, indicating that these aspects of ad content continue to exert direct effects beyond the mediating role of emotions and attitudinal components. Relationships among Antecedent Variables. We have noted that ad content influences Pleasure and Arousal. Columns 6-8 of Table 2 further show that the emotions, in turn, explain Hedonism (with the expected positive effect of Pleasure) and Interestingness (with the expected positive effect of Arousal). By themselves, the ad-content variables influence each of these attitudinal components (see Table 2). These relationships do not appear to be strongly mediated by the emotions in that the contributions of ad content decline only slightly or not at all when emotions are added to the equation in columns 9-1 1 of Table 2. Hence, significant direct effects-above and beyond the mediating role of the emotions-continue to appear in the anticipated directions for the ad-content variables in explaining the attitudinal components. In particular, Feelings versus Facts work in opposite directions to influence Hedonism and Utilitarianism, 450 JOURNAL OF CONSUMER RESEARCH TABLE 2 EMOTIONSAND ATTITUDINALCOMPONENTS AS FUNCTIONSOF AD CONTENT AND EMOTIONS Dependent variables Emotions Independent variables Pleasure Arousal Attitudinalcomponents as a function of ad content Attitudinalcomponents as a function of emotions Attitudinalcomponents as a function of ad content and emotions Hedonism Utilitariansim lnterestingness Hedonism Utilitarianism Interestingness Hedonism Utilitarianism Interestingness Ad content: Facts .08 (NS) -.01 (NS) -.21** .22 ** Feelings .05 (NS) .28**** Uniqueness .39**** .49**** .43**** Uniqueness-.03 (NS) -.36** squared -.43**** Emotion: Pleasure Arousal R2 .29**** .23 **** .34 **** Hierarchical F tests: a Ad Content 14.37**** 10.69**** 18.52**** Emotions .42**** -.27**** -.19** -.31** .42 **** 25.83**** .15* .13* .66**** -.01 (NS) .47 **** .22 .63 .07 (NS) -.10 (NS) .40 *** .06 ** .12+ .63 .41 *** 31.06**** 48.36**** 4.55** 50.54**** -.25**** .17** .26*** .40**** -.34**** -.37**** -.14* -.17** .50**** -.05 (NS) .53 **** .31 .12+ .49 **** 9.44**** 29.56**** 27.64**** 9.45**** .15** .12* .48**** -.02 (NS) -.05 (NS) .40**** .60 **** 15.78**** 22.20**** a F is the test statistic indicating the significance of the incremental change in R2 that results from adding the designated set of variables to the equation. +p < .10. *p < .05. p < .01. p < .001. **** ,5 - AAA while Uniqueness plays a key direct role in influencing Interestingness. DISCUSSION Limitations Like other research on consumer behavior, the present study illuminates the subject only within the bounds of its own particular limitations. As with virtually any investigation, the nature of the stimuli, respondents, and instruments might have affected the magnitudes or even the directions of the results reported here. Hence, as always, the possibility exists that different commercials, different judges, or different measurement techniques could have resulted in findings either more or less strong than those represented by the present data. For example, our measures of ad content (appeals and uniqueness) offer just one version of a general type of copy testing that has appeared widely under diverse guises in the advertising research literature cited earlier. Different schemessuch as those presented by Wells, Leavitt, and Schlinger-might have produced different results. Also, along similar lines, we must emphasize that, at best, our sample of 146 ads represents prime-time commercials aired in the northeastern United States during the late 1980s. Further, we cannot be sure that ads scoring higher or lower in Facts versus Feelings ldid not differ in some other way (such as local vs. national origin or high vs. low frequency of prior exposure). Replications to assess these and other questions concerning internal validity must await further research. As another potential topic for further investigation, one might wonder how our measures of zipping and zapping would compare to those based on viewing commercials naturalistically in the context of actual televised program content. Only future research can fully test the extent to which these potential threats to external validity might have created or not created problems for the generalizability of our results to other situations relevant to the effectiveness of commercials in broadcast television. Conclusions Subject to these limitations, we find the results of this study encouraging. Because the tasks that respondents completed to collect the measures of zipping and zapping were fairly lengthy, we feared that any signal contained therein might be swamped by fatigue effects and other types of noise or error. However, inasmuch as two measures collected separately in very different circumstances yielded a fairly high correlation (r = .75), our fears appear to have been exaggerated. This establishes the convergent validity of the zipping and zapping measures and the reliability of the viewingtime index based on their combination. Support for the nomological validity of this index appears in the strong ability of the separately judged measures of ad content, emotions, and attitude toward the ad to ex- EFFECTS ON VIEWINGTIME plain convincingly the variance in Viewing Time in a sound theoretical framework (overall R2 = .67). It appears that advertising content does explain Viewing Time (R2 = .54) and that these effects are partially mediated by the emotional dimensions and the components of attitude toward the ad via two primary "routes" to viewing time: (1) Feelings and Uniqueness/Uniqueness Squared -* Pleasure Hedonism -* Viewing Time; (2) Uniqueness Arousal -* Interestingness -* Viewing Time. However, beyond these mediating effects, there remains a significant direct contribution of ad content to the explanation of Viewing Time. This remaining direct effect comes, in part, from the hypothesized nonmonotonic influence of Uniqueness and Uniqueness Squared, but it also depends on an exploratory finding concerning the negative contribution of Facts and the positive contribution of Feelings. Though not explicitly hypothesized and subject to the aforementioned limitations concerning potential competing explanations, it appears throughout our findings that ads appealing to feelings exert positive direct influences on Pleasure, Hedonism, and Viewing Time, even when other mediating variables are controlled for. This result suggests that people attend selectively to positively valenced messages that make them feel good. Meanwhile, factual appeals contribute negatively to Hedonism, but exert a direct positive effect on Utilitarianism and a direct negative effect on Viewing Time-again, with the appropriate controls for intervening variables. These effects of Facts and Feelings-the apparent tendency of Facts to discourage while Feelings entice viewing behavior-clearly merit further investigation. In further specific findings, our investigation of the attitudinal components supports the notion of a multidimensional construct in which Viewing Time depends on such key influences as Hedonism, Utilitarianism, and Interestingness. As mentioned, prior research on attitude toward the ad has tended to use indices that aggregate over, and thus fail to detect, the individually varying effects of these different components. Only through disaggregate analyses can we find (as here) that Hedonism and Interestingness, but not Utilitarianism, are the major influences on Viewing Time. Our study once again demonstrates the feasibility of content analysis in studying communications phenomena across objects (i.e., messages) to supplement findings from analyses conducted across subjects (i.e., receivers). Based on common copy-testing applications (Schlinger 1979; Wells 1964; Wells et al. 1971), this approach has now achieved a relatively strong track record in regard to print ads (Holbrook and Lehmann 1980), television commercials (Holbrook and Batra 1987; Pechmann and Stewart 1985; Stewart and Furse 1985, 1986), and consumption experiences (Havlena 1985; Havlena and Holbrook 1986). Keeping in mind the aforementioned caveats by Edell and Burke (1987), 451 we believe the accumulated history of experience with this approach suggests that it might prove useful in other consumer-research contexts, such as those involving brand choice, product usage, or the meanings of possessions, especially if its results can be satisfactorily replicated in more conventional across-subjects applications. Finally, our analyses have added to the growing body of knowledge about the hierarchical chain of effects from advertising content through emotional responses and ad attitude to actual viewing behavior. We found that, for a reasonably representative set of commercials, the emotional dimensions, attitudinal components, and viewing behavior could be moderately well explained by various aspects of advertising content. In particular, in findings reminiscent of the aforementioned copy-testing literature, we have seen that the uniqueness of ads can be meaningfully assessed by content judges and that these ratings do, in fact, provide useful information for predicting emotional responses, attitude toward the ad, and viewing behavior. That is, judged measures of Uniqueness significantly explain additional variance in Mehrabian and Russell's Pleasure and Arousal dimensions, in the attitudinal components of Hedonism, Utilitarianism, and Interestingness, and in Viewing Time. 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