Copyright 2000 by the American Psychological Association, Inc. 0022-0663100/$5.00 DOI: 10.1037110022-0663.92.1.171 Journal of Educational Psychology 2000, Vol. 92, NO.1,171 -190 Predicting Different Types of School Dropouts: A Typological Approach With Two Longitudinal Samples Michel Janosz, Marc Le Blanc, Bernard Boulence, and Richard E. Tremblay University of Montreal Despite evidence of the psychosocial heterogeneity of school dropouts, empirical studies have rarely directly addressed this issue. The general goal of this research was to explore the heuristic value of a typological approach for preventing and studying school dropout. The specific objectives were to build empirically a typology of dropouts based on individual school experience, to test the typology's reliability by replicating the classification with two different longitudinal samples, and to examine the typology's predictive and discriminant validity. The results led to a 4-type solution: Quiet, Disengaged, Low-Achiever, and Maladjusted dropouts. The results support the internal and external validity of the typology and highlight important different profiles with regard to personal and social risk factors. The discussion underscores the theoretical and clinical utility of a typological approach by assisting the study of the different paths in the etiology of school dropout and the adoption of a differential prevention strategy. Forty years ago, Tesseneer and Tesseneer (1958) noted that the study of the dropout phenomenon and its causes is difficult because "the sarne factors may influence different pupils in different ways and even affect the same pupil in different ways at different times" (p. 143). Since that time, empirical studies have shown very consistently that adolescents who leave school before graduation are more likely to present behavioral, academic, social, and attitudinal vulnerabilities and to suffer from deprived or inadequate social and school environments (Bachman, Green, & Wirtanen, 1971; Cairns, Cairns, & Neckerman, 1989; Ekstrom, Goertz, Pollack, & Rock, 1986; Elliot & Voss, 1974; Fagan & Pabon, 1990; Janosz, Le Blanc, Boulerice, & Tremblay, 1997; Rumberger, 1983, 1987, 1995; Rumberger, Ghatak, Poulos, Ritter, & Dornbush, 1990; Steinberg, Elmen, & Mounts, 1989; Tesseneer & Tesseneer, 1958; Wehlage, Rutter, Smith, Lesko, & Fernandez, 1989). One conclusion that can be drawn from the accumulated empirical knowledge is that dropouts are not al1 alike. Data from numerous Michel Janosz and Marc Le Blanc, School of Psychoeducation, University of Montreal, Montreal, Quebec, Canada; Bernard Boulerice and Richard E. Tremblay, Research Unit on Children's Psychosocial Maladjustrnent, University of Montreal, Montreal, Quebec, Canada. This,research was supported by gants from the Social Sciences Research Council of Canada, the Conseil Québécois de la Recherche Sociale, the Department of the Solicitor General Canada, and the Fonds Pour la Formation des Chercheurs et l'Aide à la Recherche du Québec. We thank them all. We also thank Michel Fournier for help with data management. A preliminary version of this article was presented to the Society for Research on Adolescence in Boston, March 1995. Correspondence concerning this article should be addressed to Michel Janosz, School of Psychoeducation, University of Montreal, PO. Box 6128, Station Centre-Ville, Montreal, Quebec, Canada H3C 357. Electronic mail may be sent to janoszma psyced.umontreal.ca. studies suggest that students who drop out of school display a wide variety of personal and social characteristics (Cairns et al., 1989; Elliot & Voss, 1974; Fagan & Pabon, 1990; Rumberger, 1983, 1987; Wehlage et al., 1989). Different reasons are cited by dropouts to explain their disengagement from school (Rumberger, 1987; Tidwell, 1988). Moreover, the effects of school dropout on criminality vary according to the reason for dropping out (Jarjoura, 1993, 1996). Risk factors for school dropout can be found in al1 spheres of children's social development and include personal, interpersonal, and contextual factors (e.g., poverty, cornmunity, school characteristics). Dropouts come from al1 socioeconomic and cultural backgrounds, although minority students fkom low socioeconomic status (SES) families appear to be particularly at risk (Rumberger, 1987; Wehlage et al., 1989). Studies using multivariate analyses have shown that behavioral problems (rebelliousness, delinquency, drug use), school failure (low grades, grade retention), low motivation, low cognitive abilities, and poor parental practices (supervision, support, school expectations) are factors that each uniquely contribute to the prediction of school dropout (Cairns et al., 1989; Elliot & Voss, 1974; Fagan & Pabon, 1990; Janosz et al., 1997; Rumberger, 1983, 1987, 1995; Wehlage et al., 1989). Furthermore, the ways in which students drop out of school vary: Some quit voluntarily, whereas others are pushed out (Elliot & Voss, 1974; Kronick & Hargis, 1990; Tinto, 1993). Thus, although some risk factors appear to be quite common among dropouts (i.e., poor school achievement, low SES), it is highly improbable that al1 dropouts have the same personal attributes and family, school, and social experiences and follow the sarne developmental pathway (Hargroves, 1987; Kronick & Hargis, 1990; Rumberger, 1987; Wehlage et al., 1989). Clearly, school dropouts do not form a homogeneous group. However, this heterogeneity per se does not appear to be a major issue in the literature, because most empirical studies treat their samples as homogeneous groups. It is not 172 JANOSZ, LE BLANC, BOULERICE, AND TREMBLAY sufficient to merely state that it is common sense to talk of different types of dropout or that the diversity of risk factors underlies heterogeneity. Empirical research needs to verify these clinical observations and intuitions; it has to clarify the qualitative and quantitativeinterindividual differences regarding the psychological and social expenences among school dropouts. This specific issue has rarely been tackled directly and empirically. Some researchers acknowledge the diversity of school dropouts but do not take it into account when analyzing their data (Elliot & Voss, 1974). Others propose the use of typologies to address the dropout problem but do not empirically verify their classification(Kronick & Hargis, 1990). For example, Kronick and Hargis (1990) suggested a typology of dropouts that integrates personal characteristics, school experience, and the timing of school disengagement. They distinguished higher achieving students fiom lower achievers. High-Achiever Pushouts have good grades but are expelled from school because of problem behaviors; dropouts, however, are more likely to come from the low-achieving group. Within this category, Kronick and Hargis suggested three types of dropouts: Low-Achiever Pushouts, Quiet Dropouts, and In-School Dropouts. LowAchiever Pushouts are students who react to the frustration of repeated school failures with aggressiveness and rebellion. Their misbehavior results in disciplinary sanctions, and a vicious cycle begins that ends only when the student is expelled. The Quiet Dropouts, theoretically a frequent dropout type, also have a history of academic failure but, unlike Low-Achiever Pushouts, do not react with frustration and anger or manifest externalized behavior problems. Thus, they go unnoticed until they drop out. Finally, the In-School Dropouts are students who reach 12th grade but fail the final exams because of serious deficiencies in their knowledge. Kronick and Hargis have not tested their classification empirically; they did not discuss the differential role of important exogenous factors (i.e., family experience, socioeconomic situation, etc.), and they tend to confuse behavioral and cognitive characteristics with their consequences. Still, their typology has important heuristic value in that it proposes two major axes for distinguishing the school experience of potential dropouts: behavioral and academic adjustrnent, two well-known predictors of school dropout (see Janosz et al., 1997; Rumberger, 1987). One longitudinal study gives strong empirical support to the idea that the severity of school (academic) and personal problems (problem behavior) varies greatly among dropouts. Cairns et al. (1989) demonstrated that although students who cumulated academic failure and problem behavior had a higher probability of dropping out, they did not constitute the majority of dropouts. About 45% of dropouts were low achievers without problem behavior (50% for boys and 39% for girls); 45% showed high levels of aggressiveness, with or without academic failure (45% for boys, 46% for girls); and about 10% showed no signs of academic or behavioral problems (5% for boys, 15% for girls). A Typological Approach We believe that empirical research has overlooked the issue of heterogeneity and that Our understanding of the complex etiology of school dropout and its prevention would benefit fiom a typological approach. Unlike fields of study such as delinquency (Moffit, 1993; Quay, 1987), substance abuse (Anglin & Hser, 1990), and problem behavior in childhood (Pulkkinen & Tremblay, 1992), research on school dropout has seldom made use of typologies for understanding individual differences, highlighting different major developmental pathways, or guiding differential intervention (Brennan, 1987; Quay, 1987). Regarding intervention, one important characteristic of good programs is their ability to closely match their content and didactic methods to the specific needs, vulnerabilities, and strengths of the participants (Lipsey & Wilson, 1998; Mash, 1989; Wehlage et al., 1989). This match, which we term digerential intervention, is based on the premise that no single program can respond adequately to the needs of al1 the participants identified by a single label, such as dropout, delinquent, or drug addict (Le Blanc, 1990; Losel, 1996; McCord, 1990). In a thoughtful analysis of the efficacy of 14 schools for at-risk students, Wehlage et al. (1989) came to the conclusion that the positive effects of these schools were largely attributable to the match between the programs and the students' characteristics. This was possible, in part, because the schools carefully selected at-risk students who had characteristics that were specifically considered by the intervention program. A differential strategy can be developed and implemented over time using the experience of a specific program. A more systematic approach may be to use a typology of potential dropouts to plan a program according to each type's characteristics. However, to be useful for this purpose the selected typology must display good predictive, discriminative, and face validity (Brennan, 1987). To support a differential preventive approach, a reliable classification of potential dropouts is required. The classification scheme should help to not only predict dropouts but also to classi@ them into different types. In addition, to be clinically useful the typology must maximize intergroup differences and minimize intragroup differences. Furthermore, the characteristics distinguishing subgroups of students must be clinically significant, that is, offer school practitioners real intervention targets or modifiable risk factors that justify the differentiations among at-risk students. From a theoretical perspective, the construction and use of typologies can help clarify the different pathways that may lead to a particular outcome or the manner in which different risk and protective factors tend to interact or agglomerate within certain types of individuals or contexts (Brennan, 1987; Compas, Hinden, & Gerhardt, 1995). For instance, let us consider three interesting models of school dropout (Finn, 1989; Tinto, 1975, 1993; Wehlage et al., 1989).Al1 three describe school experience as the proximate determinant of school dropout and identi@ as the cornerStone of the disengagement process such factors as school participation (or involvement), academic performance, and school comrnitrnent (or membership, identification). But the expression of the relationships among these factors varies with each author. For example, Finn's (1989) mode1 focuses specifically on the interplay among participation in school activities, performance outcomes, and identification with school (belonging and valuing). Wehlage et al. (1989) also 173 DROPOUTTYPOLOGY recognized the importance of these three elements; however, whereas they identified school achievement as an outcome of educational engagement (similar to participation for Finn) and school membership (similar to identification for Finn), Finn situated academic performance as a mediator of the influence of participation on identification. To varying degrees, al1 three models consider the educational environment as the determinant of the quality of school experience. The process leading to school dropout is never regarded as based solely on individuals' characteristics, and school educational practices always appear as major determinants of the quality of students' participation, achievement, and motivation. Furthermore, al1 the authors recognize the diversity of the dropout population but do not specifically address the extent of their theory's explanatory power.' In other words, is their theory valid for al1 types of dropouts, or only for certain types? Usually, theoretical models try to propose the most comprehensive explanatory structure possible. A way to test and compare the explanatory powers of different theories is to see how well they fit the characteristics of different subgroups of participants and how accurate they appear to be in describing the developmental trajectory of different types of participants. Typologies may validate the heuristic value of a theory or confirm the need for the development of a complementary model. Working with a t~pologyof dropouts may help highlight the complexity of the relationships between and ~rotectivefactors for a particular problem (Brennan, 1987; Compas et al., 1995). Research Objectives and Hypotheses The general goal of our study was to explore the heuristic value of a typological approach for preventing and studying school dropout. Our first objective was to build empirically a typology of dropouts based on individual school experience characteristics. Many avenues exist for classifying dropouts. We chose to focus on school experience, for the following reasons. First, many studies have demonstrated that school factors are among the best predictors of school dropout (see Janosz et al., 1997). Academic performance, attitudes toward school (e.g., commitment, motivation), and misbehavior are al1 powerful individual predictors. For instance, Hess, Lyons, and Corsino (1989) predicted school dropout with 85% accuracy using third- and fourth-grade attendance and academic data. Janosz et al. (1997) obtained 80% accuracy using academic achievement and school commitment as predictors in high school. We hypothesized that a classification scheme that included good predictors of school dropout would have optimum predictive validity, a quality required for preventive action. Second, as reported earlier, many important theoretical models of school dropout use school factors as key elements (Finn, 1989; Tinto, 1993; Wehlage et al., 1989). We believed that a typology highlighting different profiles using these factors would increase the heuristic value of our approach, mainly by supporting a dialectical process between theory and empiricism: The theories could help us organize the findings of the empirical investigation and avoid the hazards of an atheoretical approach, and the empirical results could highlight distinct theoretical proposi- tions or unexplained areas. Third, the literature supports the view that the quality of school experience among students who drop out can be quite heterogeneous, especially in terms of academic competence, behavioral adjustment, and school commitment (Cairns et al., 1989; Hackman & Dysinger, 1970; Kronick & Hargis, 1990; Wehlage et al., 1989). Fourth, by limiting our classification to school-related factors, we wanted to enhance its face validity and acceptance by school practitioners (Brennan, 1987). A typology of potential dropouts that concurs with the experience of teachers and school practitioners is more likely to be of practical use, especially if it emphasizes intervention targets that they can control and influence. Poverty, gender, or drug use may be good predictors of school dropout, but they do not offer as much "grip" for school intervention as motivation, achievement, or misbehavior. The second objective of the study was to test the typology's reliability by replicating the classification with two different longitudinal samples. The third objective was to test the typology's predictive validity. Method Participants Our relied on secondary analyses of two longitudinal samples of high s~hooistudents. The same data set was used in a previous study to investigate the relative weight of school dropout predictors (Janosz et al., 1997). The first sample was representative of the student population on the Island of Montreal (public and private schools, al1 socioeconornic levels). This sample was established as part of a longitudinal study on delinquency begun in 1974 (see Biron, Caplan, & Le Blanc, 1975). Eight hundred twenty-five White, French-speaking adolescents in Grades 7-11 were recruited (see Le Blanc, 1996). Using the provincial data set of the Quebec Department of Education, we were able to identify the high school graduation status of 791 of the 825 students (438 males and 353 females). Dropouts are people who by the age of 22 have not completed the minimal requirements for a high school diploma. Using this definition, we identified 172 dropouts (100 boys and 72 girls), for a dropout rate of 21.7% (22.8% for boys and 20.4% for girls). The mean age when interviewed was 14.26 for the dropouts (14.2 for boys and 14.3 for girls) and 14.3 for graduates (14.2 for boys and 14.4 for girls). The second sample consisted of 797 White, French-speaking adolescents from Montreal (Grades 7-9) who were interviewed in 1985 as part of a longitudinal study on psychosocial adjustrnent in children from moderate- and low-SES families (Tremblay, Le Blanc, & Schwartzman, 1986). Of these 797 students, 791-(367 boys and 424 girls) could be identified as either dropouts or graduates. The number of dropouts was 335 (171 boys and 164 girls), for a dropout rate of 42.3% (46.6% for boys and 38.7% for girls), twice as high as for the first sample. The mean age at time of interview for the dropouts was 14.3 (14.4 for boys and 14.3 for girls) and, for graduates, 14.2 (14.2 for boys and 14.1 for girls). The distribution of boys and girls with regard to dropout status differed. Boys represented 55.4% of the total sample in 1974 but only 46.4% in 1985. Chi-square analyses showed that gender and graduation status were independent in 1974 but not in 1985. In the second l However, Tinto did specify that his model focuses on voluntary college dropouts. 174 JANOSZ, LE BLANC, BOULERICE, AND TREMBLAY sample, boys dropped out more often than girls, a finding consistent w$h data from the Quebec Department of Education (Ministère de 1'Education du Québec, 1991), which show a growing gap between graduation rates of boys and girls in Quebec. Also, as noted previously, SES differed in the two samples. The 1974 sample was a stratified random sample of the student population, and the 1985 sample had an overrepresentation of students from low-SES families. A 2 X 2 analysis of variance (ANOVA; Gender X Generation) revealed that the participants' SES was significantly lower in 1985, F(l, 1,573) = 107.09, p < -001.There was no effect of gender and no interaction. The difference in SES may explain the difference in the dropout rates because it is well documented that coming from a low-SES family increases the risk of dropping out (see Cairns et al., 1989; Fagan & Pabon, 1990; Rumberger, 1983, 1987). Measures and Variables Measures of the adolescents' psychosocial adjustment constituted the independent variables. Al1 the 1974 and 1985 adolescents completed the self-administered Social Inventory Questionnaire (SIQ; Le Blanc, 1996) at least 1 year before dropping out (see Tremblay et al., 1986). This instrument was initially created to study the development of delinquency from a social control perspective (Hirshi, 1969; Le Blanc, 1997; Le Blanc & Fréchette, 1989). Thus, it includes multiple items to measure extemal behavioral problems (delinquency, drug use, conduct disorder) and constructs such as social bonding (attachment, involvement, commitment, beliefs) and constraints (sanctions, supervision), all within different social contexts (school, family, peers). The SIQ indicators appeared relevant to the study of school dropout because they refer to personal and social factors already mentioned in several theories and empirical studies of school dropout (Fagan & Pabon, 1990; Fim, 1989; Wehlage et al., 1989). Furthemore, a recent study showed the predictive value of the instrument's indicators regarding school dropout (Janosz et al., 1997). However, it is not our intention in this article to link our empirical investigation to a social control theory framework. Our aim bas to s t u d ~the (sch0019 famil~,and peers) and personal (use of leisure time, attitude toward conventional norms, behavioral problems) experiences of school dropouts using the available data. Because a shorter version of the SIQ (120 items) was used in 1985, only the variables included in both samples were considered for this study. The abridged SIQ focused on the participants' school and family experience, peer relationships, leisure activities, belief in conventional norms, and deviant behaviors. Students were asked to evaluate the frequency with which a specific behavior had occurred during the past 12 months or the intensity of a specific experience. The items were assessed on a 4-point scale (1 = never/ none, 2 = sometimedonce or twice, 3 = ofren/many times, 4 = alwaydvery ofren), then summed or averaged when more appropriate (i.e., averaging math and French scores to get the average grade score or computing the average of the mother's and father's scores to obtain a parental measure). In Appendix A we summarize the scales' characteristics (number of items, alpha) and give examples of items from each scale. Al1 scales, with the exception of number of years behind in school (grade retention), were standardized within each sample with a mean of O and a standard deviation of 1. Also, the scales were coded so that higher scores indicated more of the indicated construct. Concurrent, discriminant, and predictive validity, as well as reliability, were confirmed for the instrument's 33 scales based on an analysis of 6,604 boys and girls between the ages of 10 and 19 (see Le Blanc, 1996, for a more detailed description of the analyses). Because the number of items is not the same for each scale, adjusted alphas have been estimated on the basis of a 12-item scale (see formula in Nunnally, 1967). This standardization procedure corrects the underestimation of the alpha for scales with a small number of items. The correction is based on Cronbach's alpha and estimates the alpha's value if the scale had 12 items. School Experience Measures of school experience included school grades (average in French and mathematics); grade retention (i.e., number of years behind in school); commitment to schooling, that is, attitude toward schooling, self-evaluation of competence, importance of success, and educational aspirations; level of stress in school; disciplinary sanctions (suspension, expulsion); involvement in school and extracurricular activities; and school misbehavior. Family Experience Farnily experience was assessed with general background and process variables. The general background variables included the average educational level of the mother and father; SES, which was a summary index of occupational prestige and economic dependency; and family disadvantage, an index of five indicators: family disruption, time of family disruption (i.e., recently or not), working mother, size of family, and frequency of moving. The process variables included the presence of potential negative models or parental problems through marital discord and parental alcohol consumption. Family process also referred to the quality of the participant's attachent to his or her parents (communication with parents, sharing of feelings, adolescent's identification with parents) and parental management practices, assessed in tems of supervision; punishment used by parents (quarreling, shouting, hitting, resûicting); and rules established to regulate homework, meals, friends, and whereabouts. Peer Relationships Peer relationships were assessed by inquiring about the participants' number offrien&, the level of involvement with fiends (iee., time spent with friends discussing and sharing activities), the desire to be like one's best friend (identification), assurnption of the role of leader in one's peer group, and exposure to deviant peers. Leisure Activities and Beliefs Our assessment of leisure activities examined how the adolescents spent their spare time. We assessed them on the following variables: allowance given, involvement in passive leisure activities (cinema, listening to music, etc.), active leisure activities (hobbies, sports, etc.), loitering, and time spent on a part-time job. Belief in conventional noms was measured with items on religious practice (going to church and attending religious classes).,items on adherence to deviant norms (theft, cheating, vandalism, drug use, truancy), and items on the participants' level of respect for authority figures (police). Deviant Behaviors We assessed drug use with a 5-item scale measuring the frequency of use of alcohol, marijuana, and hard drugs in the past 12 months. Delinquency was assessed with a 21-item scale that measured participation in fighting, minor and major thefts, and vandalism. Participants also reported the number of times they had been arrested by the police. 175 DROPOUT TYPOLOGY Data Analyses We conducted analyses in two major stages. First we used a cluster analysis technique to group school dropouts into different homogeneous groups according to their previous school experience. Although a legitimate issue in itself, we were not aiming to produce a classification of students but rather to maximize the ability to identify different kinds of dropouts. Students who graduated were thus excluded from cluster analyses. There are many classification methods, each with its own strengths and weaknesses (Brennan, 1987). We opted for a monothetic divise method called association analyses (MacNaughton-Smith, 1965). Association analyses produce simple and clear class definitions. They are sensitive to complex interactions between variables and are useful for prediction. New individuals can readily be assigned to the previousiy defined classification, and disjointed and nonoverlapping groups are produced (Brennan, 1987; MacNaughton-Smith, 1965). We concluded that this method was especially adapted for the clinical use we intended for the typology (e.g., differential intervention). Monothetic categories are defined by the repeated division of a sample on successive variables. The initial sample is divided into two subsamples by means of a splitting variable. Each subsampleis, in turn, divided by another splitting variable, and so on. This process continues until the groups become too small or no other variables can be considered splitting criteria. A variable becomes a splitting criterion because it is the one that shows the strongest relation (i.e., chi-square coefficient) with al1 other potential criteria. Hence, the first step in our association analyses was to dichotomize al1 school experience variables: school marks, grade retention, school cornmitment, involvement, sanctions, stress, misbehavior, and tniancy. The variables were divided on their median value or its nearest value. Al1 analyses were conducted separately for the two samples. To identify the splitting variables, we computed the strength of association (chi-square values) between al1 pairs of school variables in 2 X 2 contingency tables. For each variable we summed al1 the significant chi-square values in which it was involved (p < .05). The variable that cumulated the highest surn of chi-square, k i n g most strongly related to the others, became our splitting criterion. Once a variable was used as a splitting criterion, it was removed from subsequent analyses. The splitting of the sample ended when there were no more significant associations or when the number of participants was too small to conduct the chi-square analyses (n < 20). In the second stage of our analyses we investigated our capacity prospectively to predict the different types of dropouts. First we conducted a series of univariate logistic regression analyses (polychotomic)on both samples to determine which school, farnily, social, and persona1 variables were able to discriminate the different types of dropouts from the students who graduated. Next we conducted a multivariate analysis to identify the best prediction models for correctly screening the different types of dropouts. These models were developed on the 1985 sample and crossvalidated on the 1974 sample. Results Construction of the Typology The results2 of the association analyses illustrated in Figure 1 were very consistent between the two samples and led to a five-group solution. Each criterion variable was identified with its chi-square sum at the level where it became a splitting variable. Dropouts could be classified Sarnple of 1974 Average-High Commitment Average-Low School misbehavior Dropouts Z x2= 41.41 Very LOW Achievement High School rnisbehavior C Sample of 1985 No n = 49 grade retention Z x2= 6.96 \L n = 15 one or more grade retention n = 124 Average-High Commitment Average-LOW Achievement Dropouts - x2= n = 20 Cornmitment 14.82 La;,.&. School misbehavior """ n =21 Very /I grade < retention LOW n=25 n = 53 Z ~ 2 =17.17 \ One or more grade retention n=79 Figure 1. Divise clustering: sum of chi-square of the criterion variables and the participants' distribution according to the final grouping. first according to their level of school misbehavior: high versus average-low. The number of participants was not identical between these two groups because the split could not be made at the exact median. The 1974 group was divided at the 60th percentile, and the 1985 group was divided at the 57th percentile. Students who did not show signs of school problem behavior could be classified according to their level of commitment to school and their achievement scores. Here, a group of students emerged who reported an average-high level of school commitment. Furthermore, within the group of poorly committed participants, we were able to distinguish those who had very low achievement scores from those whose scores were average. The subgroup of students who showed problem behavior could be characterized by their grade level: those who cumulated grade retentions and those who were in an age-appropriate class. We decided to merge these two groups, for two reasons. First, keeping only 15 participants in the 1974 grade retention category would have affected our statistical power, as we would have had to run the analyses on a typology with five groups. Second, we compared these 2The length of the computations and the number of matrices needed to do the association analysis preclude their inclusion in this article; however, they may be obtained on request from Michel Janosz. 176 JANOSZ, LE BLANC, BOULERICE, AND TREMBLAY Table 1 Distribution of Dropouts According to Gender and Sample Dropouts Dropout types Male Female Total 57 (37.3) 10 (6.5) 13 (8.5) 73 (47.7) 67 (45.3) 10 (6.8) 12 (8.1) 59 (39.9) 124 (4 1.2) 20 (6.6) 23 (8.3) 132 (43.9) 153 148 30 1 1974 sample Quiet Disengaged Low achiever Maladjusted 36 (37.1) 9 (9.3) 11 (11.3) 41 (42.3) 1985 sample Quiet Disengaged Low achiever Maladjusted Total Note. Numbers in parentheses indicate the tolu- percentages. two subgroups on al1 measures and found that, except for grade retention, there were only (few) marginal differences, and they were not stable between the 1974 and 1985 samples. Thus, the final typology was based on three school axes: behavioral maladjustment, commitment, and achievement. The interactions among these factors revealed four types of dropouts. The means and variance of al1 variables for the different types of dropouts and for the graduates are presented in Appendix B. We proposed four labels to differentiate the four types of dropouts after a careful examination of the school variable means3 Table 1 shows the distribution of the dropout types according to gender for each sample. The association analyses were successful in classifying 96.5% of the 1974 group dropouts and 89.9% of the 1985 group dropouts. We begin by presenting an operational and conceptual definition of the dropout types, with reference to aspects of their school experience and definitions of dropout types proposed by other authors. sanctions, and held positive views about school attendance. Of al1 the dropouts,- they showed the most positive school profile, and the results appeared quite stable between the two samples. On a conceptual level this group showed very strong similarities with Kronick and Hargis's (1990) Quiet dropouts, who were described as having few external problems and poor school performance. According to this description, these youths do not react openly to their difficulties at school, do not misbehave, and generally go unnoticed until they choose to leave school. In fact, Quiet dropouts look fairly similar to the average Graduate except for their achievement. Thus, we borrowed from Kronick and Hargis the label Quiet, because their clinical description seemed to fit Our empirical description quite well. As indicated in Table 1, Quiet dropouts account for 38% (37% of boys, 39% of girls) of the dropouts in the 1974 cohort and 41% (37% of boys, 45% of girls) of the 1985 cohort. Disengaged Dropouts Operationally, these dropouts show (a) an average-low level of school misbehavior, (b) low commitment to school, and (c) average performance with respect to grades. In fact, al1 dropouts except Quiets show a weak commitment to like few g schoO1. ~ ~ dro~outs ~ ~ schoO1, have ~ educational aspirations, care little about school grades, and feel that they Ge less competent than other studenis. In short, they do not recognize the importance of education in their lives and accord it little value. Like the Quiets, their school performance is superior to that of the other two types, the Maladjusted dropouts and the Low Achievers. They actually show slightly higher grades than the Quiets. Disengaged dropouts do not misbehave as much as the Maladjusted dropouts do, but they are more troublesome than Quiets and receive more disciplinary sanctions. These results are stable for the two cohorts. Conceptually, this group resembles Kronick and Hargis's (1990) "Pushouts" who, although functional as students, expressed fnistration with school and were rebellious and undisciplined. It is worth noting that Disengaged dropouts obtained surprisingly good achievement scores, considering their level of disengagement and low school involvement. As indicated in Table 2, they are a smaller group than the Quiets, comprising just 11% (9% of males, 13% of females) of dropouts in the 1974 cohort and 7% (6% of males, 7% of females) in the 1985 cohort. Quiet Dropouts Low-Achiever Dropouts On an operational level, these adolescents are dropouts show (a) no evidence of school misbehavior and @) moderate or high levels of commitment to education in general. Although their achievement scores were not used to select them, their school performance tended to be lower than that of Graduates and Disengaged dropouts, although higher than that of Low Achievers and Maladjusted dropouts. Consistent with this profile, they appeared to be involved in school activities, did not experience disciplinary This group is 'perationally defined as showing (a) weak commitment to education, (b) average-low levels of dl001 misbehavior and, unlike the Disengaged dropouts, (c) very poor school performance (below the passing grade of 60%). Low Achievers are distinct in their inability to fulfill the Statistical support for these descriptions is provided by the results of the logistic regression analyses presented in Tables 2 and 3. ~ Table 2 Predicted Odds Ratios for DifSerent Types of Dropouts (Univariate Estimates): 1985 and 1974 Samples 1985 Predictor Q D 1974 LA M Q D Likelihood ratio LA M 1985; x2(4, N = 757) 1974; x2(4,N = 785) School experience Achievementa Commitmenta School misbehaviora Grade retentiona Involvement Stress Disciplinary sanctions Beliefs versus truancy Family background Structure Socioeconomic status Family disadvantage Parents' education Process Parents' alcohol use Marital conflict Attachment Supervision Punishment Rules Rebelliousness Lifestyle Peer relationships No. friends Involvement wlfriends Leadership Identification Deviant friends Leisure Allowance Passive leisures Active leisures Loitering Part-time job Beliefs Respect for authorities Religious practice Conventional noms Deviant behavior Drug use Delinquency Arrests Note. Table values are estimates after controlling for gender, age, and time lag between year of testing and year of dropping out. Significant interactions with gender are discussed in the text (1985: number of friends and leadership, 1974: grade retention, punishment, involvement with friends, passive leisures, delinquency). Q = Quiet; D = Disengaged; LA = Low Achiever; M = Maladjusted. "Criterion variable used to construct the typology. - f p < .10 (marginally significant). * p < .05. **p < .01. ***p < . m l . F 4 4 178 JANOSZ, LE BLANC, BOULERICE, AND TREMBLAY minimal requirements needed to pass their courses. The difficulties of the Low Achievers, compared to those of Disengaged and Maladjusted dropouts, appear to center on leaming and grades. In fact, their behavior at school was comparable to that of graduates and appears better than that of the Maladjusted dropouts. Consequently, they tended to receive fewer sanctions than the latter group. Low-Achiever dropouts do not fit any of Kronick and Hargis's (1990) categones. They are also a small group, comprising only 13% (11% of males, 15% of females) of the dropouts in the 1974 cohort and 8% (9% of males, 8% of females) of the 1985 cohort. Maladjusted Dropouts Dropouts of this type were selected primarily because of their high level of school misbehavior. In addition to this behavioral profile, Maladjusted dropouts also showed (a) poor school performance and (b) a weak commitment to education. Thus, they have difficulties at al1 academic, behavioral, and motivational levels. Their grades and commitment to school are inferior to those of the Quiets, but what really sets them apart is their poor behavior. It is therefore not surprising that this group was found to invest little in school life, receive numerous sanctions, and approve of school truancy. In short, the Maladjusted dropouts have the most negative school profile of the four dropout types, owing not only to the variety of difficulties experienced at school but also the severity of these difficulties. This group compares to Kronick and Hargis's (1990) "Low-Achiever Pushouts." This type comprised a large portion of the dropout population: 39% (42% of males, 33% of females) of the dropouts in the 1974 cohort and 44% (48% of males, 40% of females) in the 1985 cohort. In summary, the classificationsengendered by the association analyses indicate that dropouts can be distinguished from one another with respect to the intensity and nature of their school difficulties. Two groups show clearly different profiles. At one extreme are dropouts who, other than having low grades, resemble most future graduates (the Quiets). Of the four types, their school experience is the least negative. At the other extreme is a group of dropouts with severe school behavioral and academic difficulties, the Maladjusted dropouts. The Quiets and the Maladjusted dropouts make up the majority of the dropout population, accounting for 76% of dropouts in 1974 and 85% in 1985. Two smaller groups fa11 between the two extremes in terms of school difficulties. The Disengaged dropouts are characterized by disinterest in school but an ability to make the grade with little effort or motivation. The Low Achievers are distinguishable by severe difficulties in their school performance. Although the data in Table 1 reveal a slight tendency for boys to be more numerous in the Maladjusted group and girls to be more numerous in the Quiet group, chi-square analyses failed to show significant relationships between gender and dropout type, Pearson x2(3, N = 301) = 2.25, p = .52, in 1985; Pearson x2(3, N = 166) = 1.72, p = .63, in 1974. We next turned to differentiating these different types of dropouts from the graduating students. Predicting Dzfferent Types of Dropouts Univariate Analyses We conducted polychotomic logistic regressions to investigate the predictive value of different school, family, peer, social, and behavioral factors. Table 2 shows the predicted odds ratios (ORS)of al1 independent variables for each type of dropout. Each OR indicates the relative odds of being a specific type of dropout versus a graduating student due to a one-unit change in the independent variable. An OR greater than 1 indicates that the probability of being in that category increases with the value of the predictor. For example, an OR of 1.2 indicates that for each increment of 1 in the independent variable, the probability or risk increases by 20%. Conversely, when an OR is lower than 1, the relationship with the predictor is negative. This table also shows the likelihood ratio chi-square and its level of significance. This is an indicator of the goodness of fit of the predictor: High chi-square values and low p values indicate a well-fitting model. The results were controlled for gender, age, and the time lag between the year of the interview and the year of dropout. Although there were gender differences in the 1985 dropout rate, gender alone was not a significant predictor for discriminating between different types of dropouts and graduating students. Nevertheless, we tested the interaction of al1 predictors with gender, Age and time lag were significant predictors. More precisely, older students were more likely to be Maladjusted dropouts (1974: OR = 1.32, df = 4, p < .05; 1985: OR = 1.43, df = 4, p < .001), and younger students tended to be Quiet dropouts in 1974 (OR = 0.72, df = 4, p < .05). This age effect reflected on the time-lag effect. In 1974 the time lag was greater for Quiets than for Graduates (OR = 1.35, df = 4, p < .05) but did not vary for the other types. In 1985, however, al1 types of dropouts showed a significantly shorter time lag than graduating students (likelihood ratio = 140.26, df = 4, p < .001), the shortest time-lag being for the Maladjusted dropouts (see Appendix B for a representation of the variance among groups). School experience. The four variables used to construct the typology served not only as good discriminant variables among dropouts but also as good predictors. The patterns of prediction support empirically the previous qualitative descriptions. Quiets shared with the other dropouts such risk factors as low achievement scores, grade retention, and stress. However, contrarily to other dropouts, they could not be distinguished from Graduates on their commitment and involvement in school, disciplinary sanctions, or beliefs regarding truancy. In fact, reporting less misbehavior than Graduates was a characteristic of Quiet dropouts. Low school cornmitment, grade retention, poor school involvement, feeling stressed in school, and being punished without reporting high levels of misbehavior increased the risk of DROPOUT T'YPOLOGY dropping out as a Disengaged dropout. Low achievement was also a significant risk factor, but only in 1985, and did not have the same predictive strength as for the other dropouts, especially for Low Achievers. Low achievement scores, low commitment, grade retention, and stress were strong predictors for Low Achievers. Grade retention was a better predictor of Low Achiever girls (OR = 2.94, df = 4, p < .001) than boys (OR = 1.28, df = 4, p = .48) in 1974. Despite their academic failure, negative feelings in school, and lack of commitment, the Low Achievers did not behave worse than Graduates. The Maladjusted dropouts were the only dropouts who cumulated al1 the school risk factors. Academic failure, disengagement, and behavioral problems characterized Maladjusted dropouts as compared to Graduates. These results appeared quite robust between the two samples. It is important to mention that the smaller number of participants in the Disengaged and Low Achiever categories affected our statistical power, making it more difficult to reach statistical significance. Farnily experience. Lower SES, lower parental educational levels, and more structural disadvantages (e.g., singlemother family, numerous children, fiequent moving) appeared to be shared risk factors among al1 dropouts. The level of significance varied a little between the two samples, but the direction and strength of the coefficient stayed within the same range. Parental educational level was the only predictor to be significant for al1 four types of dropouts in the two samples, and it appeared especially important for Low Achievers. With regard to family processes, our results indicated that parental alcohol use and conflict were not good overall predictors, although there was a stable tendency for Low Achievers to report more alcohol use by parents. The results for Quiet and Maladjusted dropouts showed opposite patterns. Quiets were predicted by high levels of family attachment and supervision, a greater number of rules, and lower rebelliousness (significant only for 1985 dropouts). Conversely, siudents who left school as Maladjusted dropouts were more likely to report low levels of attachment, supervision, and rules, and high levels of rebelliousness. Results for the Disengaged dropouts and Low Achievers were less clear and stable between samples. In 1985 lower attachment and supervision were the best predictors for the Disengaged dropouts, and a large number of family rules was the best predictor for Low Achievers. In 1974, only a large number of rules and rebelliousness were significant for Disengaged dropouts. Peer relationships. In both cohorts, siudents classified as Maladjusted dropouts reported having more friends than the Graduates. They spent more time with friends but assumed less leadership in their peer group. Moreover, their friends displayed more deviant behaviors. A larger number of friends was also a good predictor for Quiets, as well as less leadership, but in 1985 only. Number of friends and deviant friends were significant predictors for Disengaged dropouts in 1985 but not in 1974. In 1974,however, the level of involvement with friends was a strong characteristic of the Disengaged dropouts compared to the Graduates. Having a lot of deviant friends appeared to be a good predictor for Low Achievers. The ORS indicated a trend for Low Achievers to perceive themselves less as leaders in their groups. It is interesting that the results indicated. two significant interactions with gender in 1985 (number of friends and leadership) and one in 1974 (involvement with friends). The analyses showed that in 1985 reporting more friends was a predictor for Low Achiever boys (OR = 1.60, df = 4, p = .07) but not for girls (OR = 0.07, df = 4, p = .04). Furthemore, Low Achiever boys reported being leaders in their group (OR = 2.11, df = 4 , p = .002), but the girls did not (OR = 0.73, df = 4, p = .35). A similar pattern could be observed for Maladjusted girls (OR = 0.70, df = 4,p = .04) and boys (OR = 1.11, df = 4, p = .50). The results indicated that in 1974 higher peer involvement was predictive for Disengaged (OR = 5.30, df = 4, p = .003) and Low Achiever boys (OR = 1.81, df = 4, p = .08) but not for girls (Disengaged: OR = 1.31, df = 4, p = .47; Low Achiever: OR = 0.60, df = 4, p = .14). These results suggest that peer relationships are clearer risk factors for Low Achiever and Maladjusted boys than girls. Leisure activities. Regarding leisure activities, the results showed that al1 types of dropouts engaged in less active, more passive leisure activities, although significant results were limited mainly to Quiet and Maladjusted dropouts. A significant interaction with gender indicated that passive activities were more characteristic of Quiet girls (OR = 1.73, df = 4,p = .01) than boys (OR = 0.87, df = 4, p = .43). Students who spent time loitering (in 1985), had plenty of allowance (1974), or worked many hours at a part-time job were more at risk of becoming Maladjusted dropouts. Involvement in a part-time job was also a risk factor for Low Achievers in 1985. Beliefs. The three measures pertaining to normative beliefs were also relevant for discriminating between graduating students and the different types of dropouts. Again, the results for Quiets indicated a different pattern of prediction than for other dropouts. Quiets were not different fiom Graduates with respect to religious practices or belief in conventional noms. However, they did report more respect for authority. It is not surprising that the Maladjusted dropouts adhered more to deviant noms, showed less respect for authority (1985), and were less religious than Graduates. Disengaged and Low Achiever dropouts shared with the Maladjusted dropouts less adherence to conventional values, although the results showed contradictory trends between samples for Low Achievers. Deviant behaviors. Self-reported dmg use, delinquency, and number of arrests clearly predicted Maladjusted dropouts. Results for the Disengaged dropouts indicated a similar pattern of predictors. However, only the number of arrests was significant in 1974, and high delinquency was a good predictor for boys (OR = 1.75, df = 4, p = .04) but not for girls (OR = 0.12, df = 4, p = .07) in 1974. Although Quiets tended to report less delinquent activity than Graduates, more of them had been arrested, as was also the case with 180 Table 3 Predicted O& JANOSZ, LE BLANC, BOULERICE, AND TREMBLAY Ratiosfor DlfSerent Types of Dmpouts (MultivariQteEstimtes): Stepwise Logistic Regression-1985 Sample School baseline predictors ste~ Baseline model Quiets Disengaged Underachievers Maladjusted step 2 Quiets Disengaged Underachievers Maladjusted step 3 pets Disengaged Underachievers Maladjusted step 4 Quiets Disengaged Underachievers Maladjusted Step 5 Quiets Disengaged Underachievers Maladjusted step 6 Quiets Disengaged Underachievers Maladjusted step 7 Quiets Disengaged Underachievers Maladjusted Achiev. Commit. Misbeh. Family structure Retent. Disadvant. Educat. School other Stress Involvem. Note. Table values are estimates after controlling for gender and age. Achiev. = achievement; Commit. = commitrnent; Misbeh. = volvement with friends;Attach. = attachent; LL = log likelihood. t p < .10 (marginally significant). * p < .05. **p < .01. ***p < .W1. Low Achievers (1985). Again, Low Achievers reported some contradictory results. In 1985 they tended to be more delinquent than Graduates, but in 1974 they reported less delinquency. This result is consistent with the change in conventional beliefs we saw earlier. In 1985, of the 34 independent variables, 15 discriminated Quiet dropouts from Graduates (10 in 1974), 12 discriminated Disengaged dropouts (11 in 1974), 12 discriminated Low Achievers (9 in 1974), and 28 discriminated Maladjusted dropouts (24 in 1974). The Maladjusted type was clearly the easiest one to predict with the variables used in this study. We assessed the replication of the predictive patterns by computing the percentage of agreement between the two samples. Agreement by omission is agreement in which one variable is not a significant predictor in either sample. Agreement by commission is when a variable is a significant predictor in both samples (in the same direction) or significant in one and marginally significant in the other. The total percentage of agreements for Quiets was 73% (32% by commission and 41% by omission); for the Disengaged, 62% (21% by commission and 41% by omission); for Low Achievers, 71% (24% by commission and 47% by omission); and for the Maladjusted, 77% (68% by commission and 9% by omission). Our last series of analyses concemed the capacity of these predictors to accurately screen the different types of dropouts. Multivariate Analyses and Power of ClassiJication We conducted a stepwise polychotomic logistical regression (PLR) on the 1985 sample to determine the best sets of predictors for the different types of dropouts. In this sequential analysis we decided to enter at the first step the variables used to constnict the typology. We wanted to determine whether, for accurate screening of the different types of dropouts, it was necessary to consider other variables. After forcing the entry of this first set of predictors (the baseline prediction model), we determined empirically the order of entry of the other sets of predictors. We grouped DROPOUT TYPOLOGY Peer relationships No. friends Leader Family processes Rules school misbehavior; Retent. = Attachm. Beliefs Deviancy (arrest) grade retention; Disadvant. Respect = + Likelihood ratio (df) family disadvantage; Educat. al1 other predictors into Our seven psychosocial dimensions: other school variables, family structure, family processes, peer relationships, leisure activities, beliefs, and deviant behaviors. Then we tested separately the improvement in prediction for each group of predictors. In other words, family structure variables were added to the baseline model, and we calculated the goodness-of-fit index (the likelihood ratio chi-square), the improvement in log likelihood (similar to the F-change test in multiple regression), and the percentage of correct classification of this additive model. We compared these statistics among al1 possibilities (i.e., baseline family structure vs. baseline family processes vs. baseline + peer relationships, etc.), and the dimension that most improved the prediction was added to the model. We repeated this procedure with the remaining predictors until there was no further significant improvement in prediction. Table 3 shows the results of this analysis. This analytic procedure was not guided theoretically because the issue of prediction and screening is mainly an empirical question. We did not investigate the causal links + Religion = Improvement in LL (df) % correct classified parents' education; Involvem. = in- among al1 the dimensions. Had modeling causal relationships been the focus of this study, we would have determined theoretically the rank of the predictors (Le., Erom distal to proximal factors; see Rumberger, 1995) or chosen another analytic strategy (e.g., structural equation modeling). Moreover, this analysis was conducted only on the more recent sample (1985) in order to test the validity of the prediction models on a distinct sample (1974). This strategy is much more stringent than the split halves procedure usually done to validate the predictive efficiency of a particular model (Farrington, 1987). Only the ORS of significant predictors within each psychosocial dimension are reported in Table 3. In Step 2, for example, SES, family disadvantage, and parental educational levels were al1 initially included for the family structure dimension (see Table 2 for the list of variables1 dimensions). However, SES was no longer predictive once the variability explained by family disadvantage and parental educational level was taken into account. The results for the baseline model reinforced the different JANOSZ, LE BLANC, BOULERICE, AND TREMBLAY Table 4 Percentage of Correct ClassiJica'tionand Improvement Over Chancefor the Prediction of Different Types of Dropouts According to Several Prediction Models 1985 sample 1974 sample N correctly % correctly Improvement N correctly % correctly Improvement Type of studentf dropout classified classified over chance classified classified over chance Graduates Baseline Step 2 Step 3 Step 4 Step 5 step 6 step 7 Quiet Baseline Step 2 Step 3 Step 4 step 5 Step 6 step 7 Disengaged Baseline Step 2 Step 3 step 4 Step 5 Step 6 step 7 Low Achievers Baseline Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Maladjusted B aseline Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Total Baseline Step 2 Step 3 Step 4 step 5 Step 6 Step 7 school profiles of the typology and demonstrated the predictive efficiency of the criterion variables. As demonstrated by the strong stability of the ORSfrom one step to another, the addition of subsequent predictors never mediated their direct predictive value. Furthemore, the addition of 11 predictors in the final model (Step 7) improved the overall classification percentage by only 5.7%. The results from the stepwise procedure indicated that family structure variables were the best set of predictors to improve our baseline model, followed by other school variables (stress and school involvement), peer relationships (number of friends and leadership), family processes (number of rules and attachment), number of arrests, and conventional beliefs (respect for authority and religious practice). Leisure variables did not contribute to the prediction after beliefs variables were included. The predictive efficiency of these models can best be appreciated by examining Table 4, which indicates the percentage of correct predictions for the four types of dropouts and the graduates according to each of the seven prediction models. Using a statistical prediction equation based on the logistic regression coefficients (e.g., statistical 183 DROPOUT TYPOLOGY bootstrapping procedure; Gottfiedson, 1987), we calculated for every participant five probability scores, one for each possible outcome (Graduates, Quiet, Disengaged, Low . ~ also classified the Achiever, and Maladjusted d r o p ~ u t s )We participants into the group for which they received the highest probability, and we computed the extent to which the prediction models improved on what would have been predicted by chance alone. Following Menard's (1995) recommendations, we estimated the expected number of correct predictions by chance for each category of outcome. We then calculated the percentage of improvement by subtracting the expected observations fiom the predicted observations divided by the number of predicted observations. To predict the outcomes in 1974, we used the predictors and coefficients identified in the 1985 sample. The baseline model including the four criterion variables was able to predict correctly 87.5% of the Graduates (81.5% in 1974), 38% of the Quiets (27% in 1974), 5% of the Disengaged dropouts (5.6% in 1974), 48% of the Low Achievers (24% in 1974), and 68% of the Maladjusted dropouts (75% in 1974). The percentage of improvement over chance (IOC) was generally higher than 50% for al1 dropouts in both samples (47% for Disengaged dropouts in 1985) and much higher for the full additive model. For Graduates, the addition of predictors improved the predictive efficiency of the baseline model in 1985 by only 2% and not at al1 in 1974. The IOC was about 30% in 1985 but only 3% in 1974. In fact, the IOC was negative for the full prediction rnodel (Step 7). This small improvement is directly influenced by the base rate of Graduates (80% in 1974), which makes it difficult to improve the chance-alone prediction (Fanington, 1987). In 1985, correct predictions of Quiet dropouts increased by 13% from baseline (38%) to the full prediction model (5 1%). However, the IOC varied fiom 70% to 80% in 1974, compared to 57%-68% in 1985. This increase was similar in 1974, although the percentage of correct classifications was 10% lower than in 1985. Parental education level, family disadvantage, and having been arrested particularly improved the percentage of correct classification in 1985 and in 1974. Our prediction rnodels were not as successful for Disengaged dropouts. In 1985 the best prediction models included family structure, peer relationships, and family process variables, for 25% of correctly classified participants with an IOC of 89%. In 1974 the best prediction was given by the additive model with family structure and other school variables, for 16.7% of correct classification and an IOC of 86%. The high percentage of IOC despite the small number of predicted participants (4 or 5 in 1985 and 2 or 3 in 1974) can be explained by the low base rate of Disengaged dropouts (3% in 1985 and 2.3% in 1974). The full prediction model increased correct classification by 18% over the baseline model in 1985 (76% vs. 48%) and by 19% in 1974 (43% vs. 24%), with an IOC around and over 90%. The inclusion of stress and school involvement markedly improved correct predictions in 1985 (from 44% to 72%). In 1974 the inclusion of belief scores (respect for authority and religious practice) most improved the prediction (from 24% to 43%). Finally, the baseline prediction model was most effective for Maladjusted dropouts, both in 1985 (68%) and in 1974 (75%), with an IOC of 74% in 1985 and 89% in 1974. The addition of predictors increased correct classifications by only 7% in 1985, with parental education level being most responsible for that increase. In 1974 the inclusion of level of respect for authority improved correct predictions by 6%. Discussion The general goal of this study was to explore the heuristic value of a typological approach for preventing and studying school dropout. We argued that developing a typology of dropouts would help us disentangle the school and psychosocial heterogeneity of this population, which would increase Our understanding of the etiology of school dropout and support the development of differential prevention strategies. The findings of our study fulfilled these expectations. The clinical and theoretical usefulness and implications of the typology developed in this study are closely linked to the validity tests we conducted, and thus we discuss them simultaneously. A Typology Based on School Experience We do not know of any other study that has investigated empirically the school dropout phenomenon with a typological approach. Although this study was not a verification of the clinically based classification of dropouts proposed by Kronick and Hargis (1990), it certainly supported several of the classification's assumptions regarding the heterogeneity in dropouts' school experiences. As for many other studies, the results of this research indicated that students who do not graduate encounter more difficulties in meeting and adjusting to school demands and requirements (Janosz et al., 1997; Rumberger, 1987, 1995; Wehlage et al., 1989). However, in developing a typology and verifying its validity we found that these difficulties varied in nature and intensity dong three major axes: achievement, behavior, and school commitment. Previous researchers have noted heterogeneity with respect to school achievement and misbehavior (Cairns et al., 1989; Elliot & Voss, 1974; Kronick & Hargis, 1990), but the discriminative strength of commitrnent is a distinct empirical contribution of this study and raises questions, which we address below, about the role of cornmitment in school dropout theories (Finn, 1989; Wehlage et al., 1989). Our typology appeared to be quite reliable. First, the results of the association analyses converged to the same classification scheme in the two samples. Considering that one weakness of association analyses is their instability and sensitivity to sampling variations (Brennan, 1987), we can interpret this replication as a strong indication of reliability. Second, the coverage of the dropout sample by the classification was very good (90% and over), and the distribution of the different types was very similar in both samples, with the majority of dropouts displaying a Quiet or a Maladjusted The probability of dropping out was computed as follows: P = exp [(xlyl + X ~ +Zx3y3 + x4y4 . . .) a], where P is the probability of dropping out (between O and l), x is the individual score on a predictor, and y is the standardized logit coefficient of that predictor according to a category of student. + + 184 JANOSZ, LE BLANC, BOUIAERICE.AND TREMBLAY profile. Third, the univariate analyses showed strong consistency in the nature and direction of the predictors (70% overall) between the two samples. We note that, although rare, there were some important changes in direction and strength in predictors for the Disengaged dropouts (family rules) and .the Low Achiever dropouts (conventional noms and delinquency). The limited number of such radical differences between the samples makes it difficult to interpret whether these are real changes or biases attributable to the small number of participants. Finally, in both samples, Maladjusted and Low Achiever dropouts were the most accurately predicted, followed by the Quiet dropouts. Disengaged dropouts were the most difficult types to predict in both samples. The investigation of the percentage of accurate prediction for each type of dropouts enabled us to conclude that the baseline prediction model was sufficient to identify accurately future graduate students and Maladjusted dropouts. The additions of other school and social variables did not increase markedly our prediction effectiveness. Future tests on the reliability of this classification should include the use of a different clustering technique to see whether a similar grouping would result. The stability of the classification also needs to be verified. A major finding of this study was that the nature and intensity of school difficulties were sufficiently diverse that the adolescents' social experiences varied accordingly. This homogeneity was especially notable for the two most numerous dropout types: Quiet and Maladjusted. Maladjusted dropouts are students at risk for multiple problems in addition to school dropout. Not only do they encounter significant academic and behavioral difficulties at school, but also every social dimension of their life is affected. They come from disadvantaged families with poor management practices, are highly involved with deviant peers, do not adhere to conventional beliefs, engage in mainly passive leisure activities, and display varied deviant behavior. Their profile fits the general deviance syndrome described by Jessor and Jessor (1977) and, because of the nature, intensity, and diversity of the risk factors associated with it, Maladjusted dropouts can be considered at risk for serious social maladjustment (Loeber & Fanington, 1998). Quiet dropouts show a very different profile. These students are more likely to drop out of school because they experience greater academic difficulties, but they also display more commitment to school and fewer behavioral problems than the average graduating student. Like the other dropouts, they come from more deprived families, but on some family processes they do better than the Graduates, reporting more family attachment, more supervision and rules, and less rebelliousness. They have more friends, but the fiiends are not deviant. They report more positive beliefs regarding the police, although more of them than of Graduates have been arrested. On the whole, their vulnerabilities are specifically limited to school failure and a deprived family environment. Contrary to Maladjusted dropouts, their family functioning and peer network do not appear to foster problem behaviors. For Disengaged and Low Achiever dropouts, such homogeneity is less evident. As stated earlier, the small sample sizes of these two groups reduced our capacity to detect significant differences during analyses. However, some trends were observable. Disengaged dropouts seem to experience the same social risk factors as the Maladjusted dropouts but with less intensity and with the notable differences of not cumulating academic failures and displaying less school misbehavior. As for Low Achievers, they appear to experience more diverse risk factors than the Quiets but fewer than Maladjusted dropouts. They do not display externalized problem behaviors, although their school failure and lack of motivation are very significant. It should be noted that the labeling of the different types of dropout was chosen to highlight a dominant characteristic of each profile in this study and do not refer to other labels used by other authors, unless stated otherwise (e.g., the Quiets from Kronick & Hargis, 1990). Furthermore, we do not suggest, for clinical use, labels with negative connotations. Theoretical Implications The school and social profiles of our four dropout types generate far more questions than answers. In this study we confirmed the heterogeneity of the dropout school experience with regard to achievement, behavioral adjustment, and commitment to schooling. Although these are individual factors, it should be kept in mind that they are not solely tributaries of individual attributes. We know, for example, that cultural differences affect school success (Wehlage et al., 1989). Poor students are often taught skills, attitudes, behaviors, and aspirations that are not valued by the dominant school culture, and the resulting lack of congruence negatively affects adjustment to school (Gleeson, 1992; Tinto, 1993; Wehlage et al., 1989). The family environment, through its structural aspects and educational practices (DeBaryshe, Patterson, & Capaldi, 1993; Le Blanc, Vallière~,& McDuff, 1992; McCombs & Forehand, 1989; Rumberger, 1995; Steinberg, Blinde, & Chang, 1984); the nature and quality of peer relationships (Hymel, Comfort, Schonert-Reichl, & McDougall, 1996); the nature and quality of school organizations (Bryk & Thum, 1989; Rurnberger, 1995); and teacher practices (Abbott et al., 1998; Durlak, 1995) are al1 important contextual factors that interact with individual characteristics to account for the quality of school experience. The qualitative variations in the school and social experiences of dropouts show the importance of discontinuity and heterogeneity in maladaptive development in conjunction with different constellations of risk factors (Compas et al., 1995; McCord, 1990; Moffit, 1993). Current theories of school dropout do not ignore these variations, but they lack specificity in operationalizing heterogeneous pathways to school dropout and integrating the influence of other socialization agents (Finn, 1989; Tinto, 1993; Wehlage et al., 1989). The characteristics of Disengaged and Quiet dropouts, for example, challenge the theoretical models put forward by Finn (1989) and Wehlage et al. (1989). In Finn's model, school valuing is directly influenced by school performance, but the very low comrnitment and average performance of the Disengaged dropouts do not conform to DROPOUT TYPOLOGY this prediction. The Quiets' high commitment and low achievement do not fit the negative recursive interactions between performance and motivation predicted in these theoretical models. A more direct test of the explanatory power of these models would be to conduct structural equation analyses and observe how well the same mode1 can explain the trajectory of different types of dropouts. Obviously, a systematic test of these valuable theories would require a much more detailed study, including variables to assess important constructs that were not investigated here (Le., school belonging and membership, school practices, etc.). We note, nevertheless, that these theoretical models do not consider the role of other socialization agents, in particular, family and peers, as they interact with school and individual factors. We believe that only by integrating the role of these three spheres of socialization and their interactions with individual attributes into a comprehensive theory, although a tremendous challenge, will we be able to describe the multiple pathways that lead to school dropout. The works of Steinberg and Darling (1994), DeBaryshe et al. (1993), Le Blanc (1997), Catalano and Hawkins (1996), Hymel et al. (1996), and Eccles and Midgley (1989) provide useful ideas for such an undertaking. Finally, our description and understanding of the four types of dropouts is still very incomplete; we have viewed only the tip of the iceberg. Our study originated with research on delinquency and problem behaviors (Le Blanc, 1997) and was not specifically designed to study the etiology of school dropout. At this stage of our research we can offer only speculative answers conceming the etiology of the different dropout types, and we have more questions than answers. The data used in this study lacked information on processes closely related to school success. For example, we could not explore family practices with regard to schooling (i.e., school involvement, commitment, and aspirations of parents), school involvement and commitment of friends, participants' perceptions of teachers and school practices, their reasons for dropping out, their sense of belonging, cultural beliefs about schooling, and so on. We do not believe that it is possible to understand students' developmenta1 pathways without considering the interactional processes involved in schooling (Eccles & Midgley, 1989). Integrating information about the school itself, such as climate, curriculum, teaching strategies, and so on, would prove useful in determining whether certain types of dropouts are more affected than others by contextual factors. Widening our investigation to include better focused variables would help us explain more accurately the trajectories of Quiet, Disengaged, and Low Achiever dropouts in particular. It would help us examine more closely the heterogeneity of Quiet dropouts, about which we have some doubts. In particular, we suspect that some adolescents in this group of dropouts experience different levels of internalizing problems (see Farrington, 1995). Additionally, measures of cognitive abilities, leaming strategies, motivation, and intemalized problem behavior would increase our understanding of the dropout types, especially the Disengaged and the Low Achievers. Clinical Implications Many authors have supported the relevance of a differential approach for the prevention of social maladjustment (McCord, 1990; Quay, 1987) and school dropout (Wehlage et al., 1989). The methodology to support this approach has not received a lot of attention, however. One expected utility of a typology is to lay the fondations of a differential prevention program by forming groups of different kinds of potential dropouts. To be useful for school practitioners, a typology must highlight significant differences between subgroups with distinct needs, vulnerabilities, and strengths that are unlikely to be met by a single prevention program. The priorities of the interventions, such as increasing achievement, motivation, social skills, parental involvement, and support, should vary with the type of dropout concemed. There is still too much to learn about the types of dropouts from this study, and specific prescriptions for each type are not advisable at this time. However, general recommendations can be made on the basis of the school characteristics of the different types. Preventive actions toward Quiet potential dropouts should focus principally on improving achievement. These students are stilb motivated in regard to school, and they should respond positively to school proactive measures. This strength should not be ignored. Students classified as Disengaged, Low Achiever, or Maladjusted dropouts are much less committed to school, and this disposition needs to be addressed in addition to other difficulties. Although this hypothesis needs to be tested, we believe that students classified as Disengaged have good cognitive abilities. Increasing performance should not be so difficult if motivation increases, which is probably the biggest challenge with this kind of student. We hypothesize that, contrary to Disengaged, Low Achievers have some leaming difficulties; thus, intervention programs for these youths should address both problems with intensive, highly efficient teaching strategies. Because of their numerous social vulnerabilities and extemalized problem behaviors, students identified as potential Maladjusted dropouts should benefit from highly structured learning environments. In addition to increasing school performance and commitment, interventions should aim at increasing social and survival skills, because they display very similar profiles to delinquent adolescents. Specific prescriptions for how to increase the school performance and commitment of these at-risk students is not clear yet because the causes for these weaknesses have not been demonstrated but, more important, because they probably vary between the different types: cultural gap? lack of family support? intellectual or biological vulnerabilities? Whatever the specific causes for the academic failures and school disengagement, the interventions will need to take into account the contextual learning impediments (Wehlage et al., 1989). The factors used to categorize the students must be clinically significant, pinpointing specific needs or intervention strategies that can be realistically addressed. A clinical strength of the typology of this study is that it builds on malleable factors for school practitioners. Academic perfor- 186 JANOSZ,LE BLANC,BOULERICE,AND TREMBLAY mance, motivation, and school behavior are al1 outcomes that are directly influenced by school and teaching practices (teaching methods, class management practices, etc.) that are directly under the control of school practitioners (Abbott et al., 1998; Durlak, 1995). To be useful for practitioners, the typology must have a good face value, and the assignment procedure must predict real potential dropouts. Finally, the classification must be reliable. One must feel confident that similar individuals from different samples can be accurately classified using the same rules. Our findings demonstrate the possibility of building a typology with these attributes, although more validation work remains to be done. For example, the typology's reliability needs to be tested on a more culturally diverse population. Because this typology was developed and tested on a French Canadian sample of students, future research should explore the impact of cultural factors on the psychosocial heterogeneity of school dropouts, within and between different ethnic groups. In this regard, some preliminary analyses using a longitudinal multiethnic sample of predominantly low-SES American students have shown that 97% of the dropouts could be classified by the typology. The results replicated the distribution of the different dropout types quite closely, although there were fewer Quiets (28% of the dropouts) and more Maladjusted dropouts (50%; Janosz, Catalano, & Hawkins, 1995). The naming and face value of the classification need to be rigorously tested with teachers and school practitioners, although the feedback we have received so far from our ongoing work in high schools has been very positive. In addition, we need to study in greater depth the significance of gender differences, which were very small in our study. This finding may refiect the nature of our data, which focused on externalized problem behaviors and related risk factors. Nevertheless, recent work has shown that gender is much less significant for predicting school dropout when multiple school and social factors are taken into account (Janosz et al., 1997;Rumberger, 1995). A larger scale replication study, with more school-relevant variables, may help us disentangle the impact of gender in the typology. Finally, although overall our typology showed a very good capacity for dropout prediction, with an accuracy much better than chance, there is still room for improvement, especially in predicting Disengaged and Quiet dropouts. Conclusion The typology we developed in our study is clearly not the only valid way of classiQing potential dropouts. The same clustering method applied to another sample, or the same sample used with another clustering method, or with other variables, may well have yielded different results. However, we believe that certain recurrent empirical findings show that school performance and behavior are major dimensions dong which dropouts differ. This study demonstrated the theoretical and clinical importance of considering the heterogeneity of the school dropout population. 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How important is it for you to have good grades? Have you voluntariiy disturbed the class; been impolite wlteacher; been cheating during exams? Do you feel nervous and tense, stressed in school? Have you been sent out of class this year? Have you been suspended from school this year? Usually, how many hours a day do you spend on your schoolwork at school and at home? Do you participate in extra-curricular cultural activities? What do you think of kids of your age who miss school without an excuse? A measure of occupational prestige-motherlfather Unemployment and welfare of fatherlmother How many times have you moved in your life? How many brothers and sisters do you have? Approximately how many years did your motherlfather go to school? Can you Say that your motherlfather never drinks alcohol? (Even if they're not living together) do your parents fight in front of you? Do you share thoughts and feelings with your parents? Do your parents understand what you think or feel? Would you like to have the qualities and failings of your parents; do you feel rejected by your parents? Do your parents know who you are with when you are not home? Do your parents punish you by calling you names? Do your parents punish you by hitting you? 1s there a rule at home regarding a curfew? 1s there a rule at home regarding TV watching? Did you refuse to comply to parent orders; have you run away from home for more than 24 hours? How many best friends do you have? How many hourslwk. do you share activities wlfriends? Are you the kind of person who tells the others what to do in group? Would you like to have the qualities and failings of your best friend? How many of your friends have been arrested by the police? Could your best friends be in trouble wlpolice for îhings they've done? How much money do your parents give you each week? How many hours a day do you listen to music? How often do you go to the movies? How many hourslwk. do you practice a sport? How many hourslwk. are you involved in a specific hobby? How many hourslwk. do you do nothing, be idle? How many hourslwk. do you work after school and on weekends for money? What do you think of kids of your age who voluntarily break things of others? What do you think of kids of your age who run away from home for more than 24 hours? 189 DROPOUT TYPOLOGY Appendix A Scalelvariable Beliefs (continued) Religious practice Respect authorities Problem behaviors Drug use Delinquency No. items Sample item a 2 2 .70 Do you go to church? .88 Do you have a lot of respect for and confidence in the police? 5 .90 During the past year, have you used marijuana, pot (a joint)? During the past year, have you taken hard drugs? .82 During the past year, did you fight with a weapon? During the past year, have you deliberately broken something that wasn't yours? During the past year, have you been arrested by the police? 21 Arrests (continued) 1 Note. Several scales include only one or two items. Though they may appear lirnited in their ability to represent different constructs, they were included in this study for two reasons. First, these items and scales have shown strong and stable discrirninating value between delinquents and nondelinquents and between dropouts and nondropouts (Janosz, 1995). Second, we tested systematicallythe linearity of the relationships between al1 scales, including those with one and two items, and the graduation status. Appendix B Means and Standard Deviations (2 Scores) for Graduates and Types of Dropouts Graduatesa Independent variable M SD Quietsb M SD Disengagedc M 1974 sample Age (years) No. years before dropout School experience Comrnitmentf Achievementf Grade retentionf School misbehaviorf Involvement Stress Disciplinary sanctions Beliefs versus tniancy Family background Structure Socioeconomic status Family disadvantage Parents' education Process Parents' alcohol use Marital conflict Attachment Supervision Punishrnents Rules Rebelliousness Lifestyle Peer relationships No. friends Involvement wlfriends Leadership Identification Deviant friends Leisure Allowance Passive leisures Active leisures Loitering Part-time job (Appendix continues) SD Low achieversd Maladjustede M M SD SD JANOSZ, LE BLANC, BOULERICE, AND TREMBLAY Appendix B Graduatesa Independent variable Beliefs Respect for authorities Religious practice Conventional noms Deviant behavior h g use Delinquency Arrests (continued) Quietsb Disengagedc Low achieversd Maladjustede M SD M SD M SD M SD M SD 0.03 0.05 -0.05 1.00 0.99 0.98 -0.52 0.07 -0.14 0.84 0.99 1.12 0.14 -0.41 0.39 1.05 0.65 1.03 -0.31 -0.18 -0.45 0.91 0.86 0.72 0.29 -0.43 0.57 1.01 0.88 0.87 -0.04 -0.04 -0.09 0.97 0.94 0.65 -0.21 -0.16 0.23 0.75 0.96 1.68 0.13 0.11 -0.03 1.02 1.41 0.70 0.07 -0.37 0.09 0.97 0.57 0.89 0.58 0.59 0.64 1.30 1.36 2.15 1985 sample Age (years) No. years before dropout School experience Commitmentf Achievementf Grade retentionf School rnisbehaviorf Involvement Stress Disciplinary sanctions Beliefs versus truancy Family background Structure Socioeconomic status Family disadvantage Parents' education Process Parents' alcohol use Marital conflict Attachment Supervision Punishrnents Rules Rebelliousness Lifestyle Peer relationships No. friends Involvement wlfriends Leadership Identification Deviant friends Leisure Allowance Passive leisures Active leisures Loitering Part-timejob Beliefs Respect for authorities Religious practice Conventional norms Deviant behavior h g use Delinquency Arrests "n = 619 for 1974 sample and 456 for 1985 sample. bn = 63 for 1974 sample and 124 for 1985 sample. "n = 18 for 1974 sample and 20 for 1985 sample. dn = 21 for 1974 sample and 25 for 1985 sample. en = 64 for 1985 sample and 132 for 1985 sample. 'Criterion variable used to construct the typology. Received June 9, 1997 Revision received March 1, 1999 Accepted June 1,1999