The Peer Deviancy Scale<\/strong> (PDS), also known within longitudinal prevention science as an adaptation of the “Things That My Friends Have Done” inventory, is an established psychometric instrument engineered to quantify an adolescent’s exposure to and affiliation with deviant, antisocial, and rule-breaking peer networks. Originating in foundational developmental delinquency research at the University of Michigan<\/a> and subsequently refined within the multi-site Fast Track Project<\/em> by the Conduct Problems Prevention Research Group (CPPRG)<\/a>, the PDS captures a broad spectrum of antisocial peer behaviors. The inventory comprises 17 items that assess covert delinquent acts (e.g., property theft, shoplifting, trespassing), overt interpersonal aggression and violence (e.g., severe physical assault, weapon carrying, weapon use, intimate partner battery, gang fighting), substance use (alcohol and tobacco consumption), and school-based academic noncompliance (e.g., truancy, academic dishonesty, disruptive behavior). Responses are recorded on a 5-point ordinal frequency metric ranging from 0 (“None of them”) to 4 (“All of them”). The tool features both youth self-report and parent-informant parallel forms. Psychometric evaluations consistently demonstrate robust internal consistency, yielding Cronbach’s alpha coefficients spanning α = .84 to .88 across normative community, high-risk, and parental samples (Miller-Johnson et al., 2004). Confirmatory and exploratory factor analyses support both an overarching unidimensional peer deviancy composite and differentiated multi-factor architectures delineating serious delinquency, substance engagement, and academic infractions. The scale exhibits robust concurrent, predictive, and discriminant validity, serving as an indispensable operationalization of peer contagion, deviancy training, and differential association in developmental psychopathology, criminology, and clinical prevention trials<\/span>.<\/p>\n Peer Deviancy Scale, adolescent delinquency, peer contagion, deviancy training, antisocial behavior, Conduct Problems Prevention Research Group, Fast Track Project, psychometrics, externalizing disorders, differential association theory<\/p>\n The historical architecture of the Peer Deviancy Scale traces its roots to developmental sociology and juvenile delinquency research pioneered at the Institute for Social Research at the University of Michigan<\/a> during the 1970s. The standardized operationalization and modern psychometric validation of the 17-item measure were executed by the Conduct Problems Prevention Research Group (CPPRG)<\/strong> as part of the landmark Fast Track longitudinal intervention study. The core CPPRG consortium comprised principal investigators:<\/p>\n Crucial psychometric norming, adaptation for multi-site community violence prevention, and dual-informant validity modeling were further established by Shari Miller-Johnson, Ph.D.<\/strong>, Terri N. Sullivan, Ph.D.<\/strong>, and Thomas R. Simon, Ph.D.<\/strong>, within the Multisite Violence Prevention Study coordinated through the Centers for Disease Control and Prevention (CDC)<\/a>.<\/p>\n Affiliation with antisocial peers represents one of the single most robust, reliable, and proximal predictors of delinquent behavior, substance misuse, school failure, and escalating conduct problems across middle childhood and adolescence. The primary objective of the Peer Deviancy Scale is to provide an empirically validated, brief, and ecologically sound measurement of the density of deviancy within an adolescent’s immediate social ecology. Rather than inquiring exclusively about an adolescent’s personal infractions—which frequently invokes substantial social desirability bias and underreporting—the PDS systematically surveys the behaviors perpetrated by the respondent’s closest social circle (“How many of your closest friends have…”). This methodological approach provides a dual window: it measures the peer group norms to which the adolescent is directly exposed and serves as an indirect proxy for the individual’s own covert externalizing involvement.<\/p>\n In clinical, educational, and juvenile justice settings, the PDS serves multiple critical functions:<\/p>\n The overarching psychological construct measured by the Peer Deviancy Scale is Antisocial Peer Affiliation<\/strong>, conceptualized as the degree to which an individual’s primary friendship network models, reinforces, and engages in norms that violate societal laws, institutional rules, and interpersonal rights. Psychometrically and theoretically, this construct is multidimensional, encapsulating distinct topographies of rule-breaking behavior:<\/p>\n Covert delinquency encompasses clandestine antisocial actions aimed at property acquisition or destruction without direct, face-to-face confrontation with victims. Items assess property theft from private domains (lockers, desks, purses, homes), retail larceny (shoplifting), motor vehicle theft or joyriding, unlawful entry (breaking into buildings, cars, or houses to steal), and intentional vandalism or property destruction across school, commercial, and residential environments. These behaviors indicate an established departure from societal legal codes and reflect shared covert group activities that reinforce instrumental rule violation.<\/p>\n Overt aggression involves direct physical harm, threat of force, and lethal risk behaviors within interpersonal encounters. The PDS captures severe physical assaults (“Hit someone really badly”), intimate partner violence (“Hit or slapped a boyfriend\/girlfriend really badly”), aggravated assault with weapons or physical force, predatory armed extortion (“Used a weapon or force to get money or things from another person”), carrying concealed weapons (knives, guns) onto academic campuses, and organized collective violence (gang fighting). Endorsement of these items signifies embeddedness within high-risk, violent subcultures where physical dominance and coercive intimidation operate as normalized behavioral scripts.<\/p>\n This dimension measures engagement in developmentally proscribed licit and illicit substance consumption, specifically alcohol consumption and tobacco\/cigarette smoking. Peer substance use during early and middle adolescence is rarely an isolated phenomenon; it predominantly functions as a shared social ritual that facilitates group cohesion, lowers behavioral inhibition, and accelerates cross-tolerance for further deviant experimentation.<\/p>\n The academic domain captures defiance toward formal educational structures. Items measure unexcused school absenteeism (truancy), institutional deception (cheating on examinations or homework, lying to teachers to evade disciplinary consequences), and active behavioral disruption within the classroom environment. This facet reflects an alienation from prosocial institutional expectations and often constitutes the earliest observable stage of the developmental cascade toward chronic delinquency.<\/p>\n The architecture of the Peer Deviancy Scale is grounded in prominent psychosocial theories of crime, developmental psychopathology, and social ecology:<\/p>\n Formulated by Edwin Sutherland (1947), Differential Association Theory<\/a> posits that criminal and deviant behaviors are learned through intimate personal group interactions. An individual turns toward delinquency when exposed to an excess of definitions favorable to violation of law over definitions unfavorable to violation of law. The PDS directly operationalizes Sutherland’s core tenets: by measuring the proportion of an individual’s closest friends exhibiting deviancy, the scale quantifies the frequency, priority, duration, and intensity of deviant normative models within the respondent’s developmental niche.<\/p>\n Albert Bandura’s (1977) Social Learning Theory<\/a>, expanded through the coercion and peer interaction models of Gerald Patterson and Thomas Dishion (Dishion et al., 1996), explains the micro-mechanisms captured by the PDS. Dishion’s construct of deviancy training<\/em> describes contingent positive social reactions (e.g., laughter, verbal encouragement, peer status elevation) provided by antisocial peers during rule-breaking discourse. Over time, adolescents immersed in such dyads or cliques undergo intensive behavioral shaping that normalizes covert theft, violent confrontation, and institutional defiance. The PDS serves as a macroscopic survey of environments rich in deviancy training opportunities.<\/p>\n Terence Thornberry’s (1987) Interactional Theory merges social control theory and social learning theory into a reciprocal, life-course developmental model. Thornberry argues that the relationship between peer deviancy and individual conduct problems is bidirectional: while weak attachment to prosocial institutions (schools, family) facilitates selection into deviant peer groups, the deviant peer network actively amplifies and solidifies individual delinquent engagement over time. The PDS captures this dynamic nexus across the childhood-to-adolescent developmental transition.<\/p>\n The Peer Deviancy Scale has undergone extensive empirical evaluation demonstrating exemplary psychometric validity across community, clinic-referred, and high-risk urban and rural cohorts.<\/p>\n Construct validity is substantiated by robust correlations with established measures of adolescent externalizing pathology. Scores on the PDS correlate significantly and positively with the Externalizing Broadband Scale, Rule-Breaking Behavior Subscale, and Aggressive Behavior Subscale of the Achenbach Child Behavior Checklist (CBCL) and Youth Self-Report (YSR), with Pearson product-moment correlations typically ranging between r<\/em> = .45 and r<\/em> = .62 (p<\/em> < .001). Furthermore, the PDS correlates strongly with measures of low self-control, sensation seeking, and impulsivity (e.g., Barratt Impulsiveness Scale), while demonstrating moderate inverse associations with measures of prosocial academic attachment and parental monitoring<\/span>.<\/p>\n Longitudinal investigations conducted via the Fast Track Project and the Multisite Violence Prevention Study (Miller-Johnson et al., 2004) establish the extraordinary predictive utility of the PDS. Baseline scores on the 10-item core index and 17-item full inventory longitudinally predict future court adjudications, formal juvenile arrest records, violent community altercations, illicit drug consumption, and high school dropout rates across multi-year follow-up intervals, even after statistically controlling for prior individual aggression and socioeconomic disadvantage. Longitudinal structural equation modeling indicates that elevations in peer deviancy mediated the intervention treatment effects observed in the Fast Track randomized trial.<\/p>\n The scale demonstrates adequate discriminant separation from internalizing symptoms (e.g., generalized anxiety, major depressive symptomatology, somatic complaints). Correlations between the PDS and the CBCL Internalizing Broadband scale remain modest (typically r<\/em> < .15), affirming that the inventory specifically indexes behavioral noncompliance and delinquent ecology rather than generalized psychological distress<\/span>.<\/p>\n The psychometric stability and precision of the Peer Deviancy Scale have been replicated across diverse ethnic, geographic, and sociodemographic strata.<\/p>\n The internal consistency of the PDS items is consistently high across independent validation cohorts. In the comprehensive psychometric evaluation conducted by Miller-Johnson et al. (2004) within the Multisite Violence Prevention Study:<\/p>\n In prospective assessments over 6-month and 12-month retest intervals during middle school, the PDS exhibits moderate-to-high rank-order stability coefficients ranging from r<\/em> = .60 to r<\/em> = .72. Because friendship configurations naturally shift during adolescent developmental transitions, these coefficients reflect both the expected stability of chronic antisocial trajectory involvement and the dynamic, reconfigurable nature of adolescent friendship cliques<\/span>.<\/p>\n Concordance between youth self-report and parent proxy-report is typically moderate, with Pearson correlation coefficients spanning r<\/em> = .30 to r<\/em> = .46. This level of correspondence is consistent with cross-informant meta-analytic trends in adolescent assessment, where youth possess direct, unobserved knowledge of peer actions that are systematically masked from parental oversight<\/span>.<\/p>\n Structural evaluations of the Peer Deviancy Scale using both Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) reveal an overarching general deviancy factor alongside well-defined thematic sub-dimensions.<\/p>\n Principal Axis Factoring and Maximum Likelihood exploratory models utilizing oblique rotation (Promax or Oblimin) consistently extract a dominant first factor accounting for upwards of 40% to 50% of the total variance. Factor loadings for items measuring overt physical aggression, weapon usage, and serious property theft typically exceed .60, establishing a potent core delinquent construct. Secondary factor extractions isolate:<\/p>\n In rigorous CFA testing across multi-site adolescent cohorts, both a higher-order hierarchical model (a general Peer Deviancy second-order factor overarching three first-order factors: Delinquency\/Violence, Substance Use, Academic Noncompliance) and a bi-factor structure demonstrate superior fit to empirical data compared to a strictly unidimensional 1-factor model. Standard model fit indices routinely meet or exceed conventional psychometric benchmarks:<\/p>\n Standardized item-factor loadings (λ) across target subscales are robust, with covert and overt delinquent items demonstrating loadings between .55 and .82, and academic noncompliance items loading between .58 and .76.<\/p>\n The technical parameters and administrative architecture of the Peer Deviancy Scale are structured as follows:<\/p>\n The foundational items of the Peer Deviancy Scale were operationalized in developmental sociological studies at the University of Michigan during the 1970s and subsequently adapted into the “Things That My Friends Have Done” instrument by the Conduct Problems Prevention Research Group (CPPRG) in 1998<\/strong> for the Fast Track Project. Methodological validation for multi-site violence prevention initiatives was formally published by Miller-Johnson, Sullivan, and Simon in 2004<\/strong>.<\/p>\n Licensing and Fee Structure:<\/strong> The instrument is maintained within the public academic domain for non-commercial research, educational, and clinical evaluation purposes. No user licensing fees or per-administration royalties are required. Researchers and practitioners may access the measure through published compendia, including technical documentation from the Fast Track Project Assessment Battery<\/a> and the Pan American Health Organization (PAHO)<\/a> compendium, Latino Families and Youth: A Compendium of Assessment Tools<\/em> (pages 94–96). When utilizing the scale, researchers are obligated to maintain standard academic attribution by citing the original instrument developers (CPPRG, 1998) and relevant psychometric validation literature (Miller-Johnson et al., 2004).<\/p>\n The Peer Deviancy Scale (PDS) is a 17-item psychometric assessment measuring adolescent affiliation with deviant peers, including property crime, overt violence, substance use, and academic infractions.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","categories":[11559,17216,306],"tags":[9616,13481,16514,12627,23413,6,13100],"class_list":["post-7818","psych_scale","type-psych_scale","status-publish","hentry","category-adolescent-development","category-criminology-delinquency","category-psychological-assessment","tag-antisocial-behavior","tag-delinquency","tag-fast-track-project","tag-pds","tag-peer-deviancy-scale","tag-psychometrics","tag-violence-prevention"],"_links":{"self":[{"href":"https:\/\/ashadocs.org\/index.php?rest_route=\/wp\/v2\/psych_scale\/7818","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ashadocs.org\/index.php?rest_route=\/wp\/v2\/psych_scale"}],"about":[{"href":"https:\/\/ashadocs.org\/index.php?rest_route=\/wp\/v2\/types\/psych_scale"}],"author":[{"embeddable":true,"href":"https:\/\/ashadocs.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ashadocs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7818"}],"version-history":[{"count":0,"href":"https:\/\/ashadocs.org\/index.php?rest_route=\/wp\/v2\/psych_scale\/7818\/revisions"}],"wp:attachment":[{"href":"https:\/\/ashadocs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7818"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ashadocs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7818"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ashadocs.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7818"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Keywords<\/h2>\n
Authors<\/h2>\n
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Purpose<\/h2>\n
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Psychological Construct<\/h2>\n
1. Covert Delinquency and Property Violations<\/h3>\n
2. Overt Interpersonal Aggression, Violence, and Weapon Involvement<\/h3>\n
3. Substance Engagement<\/h3>\n
4. Academic Noncompliance and Institutional Disengagement<\/h3>\n
Theoretical Framework<\/h2>\n
Differential Association Theory<\/h3>\n
Social Learning Theory and Deviancy Training<\/h3>\n
Interactional Theory<\/h3>\n
Validity<\/h2>\n
Construct and Convergent Validity<\/h3>\n
Predictive and Criterion Validity<\/h3>\n
Discriminant Validity<\/h3>\n
Reliability<\/h2>\n
Internal Consistency<\/h3>\n
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Test-Retest Stability<\/h3>\n
Inter-Rater Reliability<\/h3>\n
Factor Analysis<\/h2>\n
Exploratory Factor Structure<\/h3>\n
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Confirmatory Factor Analysis and Model Fit<\/h3>\n
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Instrument \/ Measurement Tool<\/h2>\n
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Permissions & Fee and Test Year<\/h2>\n
References<\/h2>\n
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13. Items of the Scale (Questionnaire)<\/h2>\n