Psychopathy scores and violence among juvenile offenders: a multi-measure study

This study examined the relations between psychopathy scores and violent behavior in 113 incarcerated adolescents. We compared the results of four different instruments designed to assess psychopathy features among juveniles-the Psychopathy Checklist: Youth Version (PCL:YV), two versions of the Antisocial Processes Screening Device (APSD), and a Psychopathy Content scale on the Millon Adolescent Clinical Inventory (MACI). We found that PCLY:YV scores were significantly correlated with violent offense history, unadjudicated violence, and institutional violence, as well as measures of the severity and instrumentality of prior violence. Receiver operating characteristic analyses generated statistically significant effect sizes (AUC values) ranging from 0.64 to 0.79. The three other measures generated statistically significant correlations with one or more of the violence criteria, although correlations and effect sizes tended to be smaller in magnitude. Our results offer some support for the validity of these measures of psychopathic features, and the value of the PCL:YV in particular, with respect to short-term measures of violence outcome among juvenile offenders.     

The validity of the Antisocial Process Screening Device as a self-report measure of psychopathy in adolescent offenders

There is a growing interest in the assessment of adolescent psychopathy to enable early treatment and intervention. Recently, a self-report measure has been developed to assess psychopathic traits in adolescents. The Antisocial Process Screening Device (APSD), a self-report measure of psychopathic traits, and the Psychopathy Checklist: Youth Version (PCL:YV), a clinical rating scale, were administered to a sample of 100 incarcerated male adolescent offenders to assess the concurrent validity of the APSD. Results indicated that the APSD had limited concurrent validity with respect to the PCL:YV and that there appears to be a method effect in the measurement of psychopathy. Thus, it appears the APSD did not assess psychopathy in a manner parallel to that of the PCL:YV.     

The relationship between psychopathic features, violence and treatment outcome: the comparison of three youth measures of psychopathic features

Few studies have compared self-report and clinician-administered measures of youth psychopathic features in juvenile-justice settings in terms of antisocial behavior and treatment indices. In a sample of 85 adjudicated delinquents, the predictive validities of the Antisocial Process Screening Device (APSD), the modified Childhood Psychopathy Scale (mCPS), and the Hare Psychopathy Checklist: Youth Version (PCL:YV) were tested. Three indices of institutional antisocial behavior (physical aggression; verbal aggression; administrative infractions) and two indices of treatment progress (time to treatment level promotion; whether treatment levels were dropped) were used as external correlates. The self-report measures (mCPS more so than APSD) were more consistently and strongly related to antisocial behavior and to the days required to progress in treatment than the PCL:YV. The following issues are discussed: (i) implications of the potential impact of measurement format on the understanding and predictive validity of youth psychopathy features and measures; (ii) the differential predictive validity of self-report versus clinician-administered measures; and (iii) the potential practical utility of measures of psychopathic features in youth.     

The use of a screening device to assess psychopathy in young offenders

The aim of this research was to determine to what extent a psychopath screening device (the APSD) is useful in forensic assessments to predict general and violent offending. For this purpose, a cross-sectional study was done and 238 young people serving a sentence were assessed. The gold standard instrument used to measure psychopathy was the Psychopathy Checklist: Youth Version (PCL:YV; Forth, Kosson & Hare, 2003). The results indicate that the association found between the screening device scores and several indicators of risk is low if compared with those obtained with the PCL:YV, suggesting that it is less useful as a tool in order to predict offending or violent offences. However, an Area Under the Curve of .784 and a validity index of 62.5 support its use as a screening device or as a preliminary approach to assess psychopathy in this population. The usefulness of this instrument to make assessments with young people in the forensic setting is discussed.     

Predicting dangerousness with two Millon Adolescent Clinical Inventory psychopathy scales: the importance of egocentric and callous traits

Psychopathy in youth has received increased recognition as a critical clinical construct for the evaluation and management of adolescents who have come into contact with the law (e.g., Forth, Hare, & Hart, 1990; Frick, 1998; Lynam, 1996, 1998). Although considerable attention has been devoted to the adult construct of psychopathy and its relation to recidivism, psychopathy in adolescents has been less thoroughly researched. Recently, a psychopathy scale (Murrie and Cornell Psychopathy Scale; Murrie & Cornell, 2000) was developed from items of the Millon Adolescent Clinical Inventory (MACI; Millon, 1993). This scale was found to be highly related to the Psychopathy Checklist-Revised (Hare, 1991) and was judged to have demonstrated good criterion validity. A necessary step in the validation process of any psychopathy scale is establishing its predictive validity. With this in mind, we investigated the ability of the MACI Psychopathy Scale to predict recidivism with 55 adolescent offenders 2 years after they had been evaluated at a juvenile court evaluation unit. In addition, we devised a psychopathy scale from MACI items that aligned more closely with Cooke and Michie (2001) and Frick, Bodin, and Barry's (2001) recommendations for the refinement of psychopathy and tested its predictive validity. Results indicate that both scales had predictive utility. Interpersonal and affective components of the revised scale were particularly important in the prediction of both general and violent reoffending.     

Adolescent Psychopathy and Personality Theory—the Interpersonal Circumplex: Expanding Evidence of a Nomological Net

The construct validity of psychopathy was examined in a sample of 114 male and female young offenders (M_age = 15.16) at a southeastern detention center. The interpersonal circumplex served as a framework of general personality from which to examine the construct of adolescent psychopathy. A supplementary analysis of the psychopathy measures and the Big 5 factors of personality was also conducted using a matrix approach. Measures included: (a) Antisocial Process Screening Device (P. J. Frick & R. D. Hare, 2001); (b) Child Psychopathy Scale (D. R. Lynam, 1996); (c) Psychopathy Checklist—Youth Version (A. E. Forth, D. S. Kosson, & R. D. Hare, 2003); and (d) Interpersonal Adjective Scales Revised—Big 5 Version (P. Trapnell & J. S. Wiggins, 1991; J. S. Wiggins, 1995). Results showed substantial convergence among the three psychopathy measures. In addition, meaningful associations between psychopathy and constructs within the interpersonal circumplex and broader domains of the Big 5 were obtained. Two psychopathy scales correlated to a higher degree than expected with neuroticism. These findings provide evidence linking personality theory to the concept of child and adolescent psychopathy, thereby adding to its construct validity. However, they do so with the caveat that youth may also be displaying some characteristics of neuroticism, suggesting that worry and anxiety may accompany psychopathic features in earlier developmental stages. The implications of the current study are discussed.     

Use of the Personality Assessment Inventory to assess psychopathy in offender populations

The authors investigated the validity of the Antisocial Features (ANT) scale of the Personality Assessment Inventory (PAI; L. C. Morey, 1991) with respect to assessments of psychopathy in 2 offender samples. Study 1 included 46 forensic psychiatric inpatients who were administered the Screening Version of the Hare Psychopathy Checklist (PCL:SV; S. D. Hart, D. N. Cox, & R. D. Hare, 1995). In Study 2, 55 sex offenders were administered the Hare Psychopathy Checklist--Revised (PCL-R; R. D. Hare, 1991). ANT scores correlated highly with the PCL:SV total score (r = .54) and moderately with the PCL-R total score (r = .40). ANT tapped primarily behavioral symptoms of psychopathy rather than interpersonal and affective symptoms. Also, ANT had low to moderate diagnostic efficiency regarding diagnoses of psychopathy, suggesting that it may be better used as a dimensional rather than categorical measure of this construct.     

The content validity of juvenile psychopathy: an empirical examination

This study examined the content validity of a juvenile psychopathy measure, the Childhood Psychopathy Scale (CPS; D. R. Lynam, 1997), based on a downward translation of an adult instrument, the Hare Psychopathy Checklist-Revised (PCL-R; R. D. Hare, 1991). The CPS was compared with two other indices of juvenile psychopathy: (a) an index derived from expert ratings and (b) an empirical index based on correlations with adult psychopathy. The 100 items of the Common Language Q-Sort (CLQ; A. Caspi et al., 1992) provided a common metric for the comparison. Psychopathy and personality were assessed at age 13 years with the mother-reported CPS and the CLQ. Psychopathy was assessed at age 24 years with the interviewer-rated Psychopathy Checklist: Screening Version (PCL:SV; S. D. Hart, D. N. Cox, & R. D. Hare, 1995). Data from over 250 participants of the middle sample of the Pittsburgh Youth Study were used to examine these relations. Item content analyses demonstrated considerable overlap among the three indices, indicating that the downward translation utilizes criteria similar to those of experts and the empirically-derived measure. In addition, these indices, even after removing overlapping items, demonstrated considerable convergence, also supporting the content validity of the downward translation. These results suggest that the downward translation method is adequate for understanding the juvenile psychopathy construct.     

Psychopathy and recidivism from mid-adolescence to young adulthood: cumulating legal problems and limiting life opportunities

This study examined the ability of psychopathy as indexed by the following 4 scales: Psychopathy Checklist: Youth Version (A. E. Forth, D. S. Kosson, & R. D. Hare, 1996/2003), Antisocial Process Screening Device (P. J. Frick & R. D. Hare, 2001), Hare Self-Report Psychopathy Scale-II (R. D. Hare, 1991), and Personality Assessment Inventory-Antisocial Scale (L. C. Morey, 1991, 2007) to prospectively predict antisocial outcomes including general and violent recidivism across a 3- to 4-year time span. Results indicated that psychopathy was predictive of both general and violent recidivism from mid-adolescence to young adulthood even after accounting for 14 variables theoretically linked to offending. These findings add to the recent research showing stability in the psychopathy traits across time by also demonstrating that psychopathy in adolescents also has a real-world effect, including a cost to society with higher rates of offending in the community and a cost to youth with cumulating legal records that are likely to narrow their potential for prosocial growth in the community.     

Testing factor models of the Psychopathy Checklist: Youth Version and their association with instrumental aggression

Although there is a documented link between psychopathy and instrumental violence in adult offenders, the association between these constructs has not garnered significant attention in adolescent offenders. In this study, we evaluated the relationship between psychopathy and instrumental aggression in a sample of 122 male adolescents incarcerated in a state facility for serious and chronic offenders. We evaluated the primary (2-, 3-, and 4-factor) models of the Psychopathy Checklist: Youth Version (PCL:YV; Forth, Kosson, & Hare, 2003) and assessed their relationship to a separate 5-item measure of instrumental violence. CFA revealed good model fit for the 3- and 4-factor latent variable models of adolescent psychopathy and a single-factor model reflecting a 5-item measure of instrumental violence. Structural equation modeling results indicate that the 4-factor model accounted for 20% of the variance for instrumental violence. In contrast, the 3-factor model of the PCL:YV accounted for 8%, and the 2-factor model accounted for 5% of the variance associated with instrumental violence.     

Views of the downward extension: comparing the Youth Version of the Psychopathy Checklist with the Youth Psychopathic traits Inventory

Increasing interest in "juvenile psychopathy" has been met with scholarly debate about the validity of directly extending the adult construct of psychopathic personality disorder to youth. To inform this debate, this study of 160 serious adolescent offenders compared two alternative, adult-based conceptualizations of juvenile psychopathy: that of the Psychopathy Checklist: Youth Version (PCL:YV) and the self-report Youth Psychopathic traits Inventory (YPI). The results indicate that these two conceptualizations overlap only partially, with the YPI focusing more tightly on core interpersonal and affective features than the PCL:YV. Each conceptualization is reliable and predicts different forms of short-term institutional misbehavior. However, only the YPI possesses a theoretically coherent, inverse association with anxiety. Despite this promise, these conceptualizations of psychopathy are less strongly associated with one another than they are with psychosocial markers of developmental maturity. This raises questions about their divergent validity and ability to identify a disorder that will remain stable during the transition from adolescence into adulthood. Implications for future longitudinal research on the validity, manifestations, and course of juvenile psychopathy are discussed.     

Factor structure of the Hare Psychopathy Checklist: Youth Version (PCL: YV) in incarcerated adolescents

Two studies are reported on the underlying dimensions of the psychopathy construct in adolescents as measured by the Hare Psychopathy Checklist-Youth Version (PCL: YV; Forth, Kosson, & Hare, 2003). In Study 1, the PCL: YV item ratings for 505 male adolescents incarcerated in 5 different settings in North America were used to test the fit of 3 models that have been hypothesized to represent the structure of psychopathy in adults. A 4th model based on parceling PCL: YV items was also tested. In Study 2, these models were tested with a sample of 233 male adolescents incarcerated in 2 facilities in the United Kingdom. Model fit results indicated that the 18-item 4-factor model developed by Hare (2003) and a modified version of a 13-item 3-factor model developed by Cooke and Michie (2001) were associated with generally good fit. Because the 4-factor model is a less saturated model than the 3-factor model (better parameter to data point ratio), it survived a riskier test of disconfirmation. Implications for the nature of psychopathy in youth are discussed.     

Examining the utility of the PCL:SV as a screening measure using competing factor models of psychopathy

The correspondence between the Hare Psychopathy Checklist: Screening Version (PCL:SV; S. D. Hart, D. N. Cox, & R. D. Hare, 1995) and the Hare Psychopathy Checklist-Revised (PCL-R; R. D. Hare, 1991, 2003) was examined in forensic (N = 175) and correctional (N = 188) samples. Intermeasure correlations for Total scores (.95 forensic, .94 correctional) and the original 2-factor, D. J. Cooke and C. Michie's (2001) 3-factor, and R. D. Hare's (2003) 4-facet models (range = .87-.95) were high. Area under the curve values for the PCL:SV were .98 in both samples (cutoff = PCL-R Total score of 25). The PCL:SV performed well as a screen, maximizing false positive relative to false negative errors. Close correlations for prediction of violent recidivism in the correctional sample were obtained for the PCL-R (.42) and PCL:SV (.37). Results indicate the robust relation between the measures is maintained whether they are completed on the basis of file review only or file plus interview and whether the same or different raters score the measures.     

Selected Rorschach variables of psychopathic juvenile offenders

Despite the widely accepted utility of assessing psychopathic personality features in forensic and clinical settings, the Hare Psychopathy Checklist-Revised (PCL-R; Hare, 1991) stands virtually alone in its ability to do so with adequate reliability and validity. Recent studies have demonstrated the effectiveness of the Rorschach Inkblot Method in assessing psychopathy in adult samples, but almost no studies are currently available investigating the Rorschach's ability to assess the condition in younger samples of precisely defined psychopathic groups. In this study, 66 male juvenile offenders, ages 14 to 17, were placed into 3 groups according to level of psychopathy as measured by the youth version of the PCL-R (PCL:YV; Forth, 1995). Nine Rorschach variables conceptually related to various psychopathic features were investigated. Two of the variables (Reflections and Texture Responses) demonstrated statistically significant differences across groups (p < .05). Two additional variables (Vista and White Space) were produced in patterns consistent with existing research, although only to a weak degree. The remaining variables (Egocentricity Index, Form Dimension, Pure Human Content, Inanimate Movement, and Diffuse Shading) did not differ across groups in the predicted directions. Overall, these results offer some support for the validity of the Rorschach as a method of detecting certain psychopathic personality features, including pathological narcissism and interpersonal detachment, in adolescent male offenders.     

The inclusion of antisocial behavior in the construct of psychopathy: A review of the research

The psychopathic personality, or the construct of this disorder, has a long and contentious history. Psychopathy has been identified anecdotally for centuries; however, the ability to accurately define this construct continues to challenge researchers and clinicians. Of preliminary concern is the relevance of antisocial behavior to this disorder. Theoretical conceptualizations of psychopathy have changed over the past 65 years. Some have stressed the interpersonal and affective deficits of psychopathy [Cleckley, H. (1941). The mask of sanity (1st ed.). St. Louis, MO:C.V. Mosby.], while later conceptualizations have included both personality traits as well as antisocial behavior as criteria of psychopathy [Hare, R. D. (1991/2003). The Hare Psychopathy Checklist—Revised. Toronto, Canada: Multi-Health Systems]. This article will review the literature, particularly the relevance of antisocial behavior to the core personality structure of the psychopath. In doing so, historical theories will be reviewed, followed by later theoretical and empirical research. A great deal of this research has been conducted over the past 15 years, since the publication of the Psychopathy Checklist (PCL) and the Psychopathy Checklist-Revised (PCL-R; [Hare, R. D. (1991/2003). The Hare Psychopathy Checklist—Revised. Toronto, Canada: Multi-Health Systems]). The PCL-R has provided the field of psychopathy research with a consistent measurement device, and, therefore will be discussed at length. The limitations of the psychopathy construct will be discussed as well as needed future research and the policy implications of such research.     

Psychopathy in adolescence and criminal recidivism in young adulthood: longitudinal results from a multiethnic sample of youthful offenders

Very few studies to date have examined the long-term predictive validity of psychopathy among juveniles. The current study reports general and violent recidivism data for an ethnically heterogeneous sample of male offenders (n = 75) who had been administered the Psychopathy Checklist: Youth Version (PCL: YV) in 1996 when they were on average 16 years of age. Neither total scores nor factor scores of the PCL: YV predicted general or violent reconvictions throughout this time frame. These modest effects underscore recent concerns raised about the utility of psychopathy as a risk factor for future criminality, particularly among multiethnic offender samples.     

A multigroup item response theory analysis of the psychopathy checklist--revised

Item response theory was used to investigate the functioning of the Psychopathy Checklist-Revised (PCL-R; R. D. Hare, 1991, 2003) in several offender populations. With male criminal offenders (N=3,847) as a reference group, differential item functioning analyses were performed for 3 comparison groups: female criminal offenders (N=1,219), male forensic psychiatric patients (N=1,246), and male criminal offenders scored from file reviews (N=2,626). Results are discussed in the context of the 2-factor, 4-facet model for the PCL-R (R. D. Hare, 2003; J. Parker, G. Sitarenios, & R. D. Hare, 2003). Application of a multigroup graded response model to all 4 groups suggests scalar equivalence may hold at least approximately for each population, although the PCL-R provided slightly greater information about the latent trait of psychopathy for male criminal offenders scored from the standard procedure.     

Predictive validity of the Psychopathy Checklist: Youth Version for general and violent recidivism

Several authors have expressed concern regarding the use of youth psychopathy assessments in determinations of risk for general and violent offending. The Psychopathy Checklist: Youth Version (PCL:YV) was completed with 182 male adolescent offenders in this prospective study (average 14.5 month follow-up) of general and violent recidivism. Both a two-factor and three-factor model of the PCL:YV significantly predicted general and violent recidivism at a predictive accuracy ranging from 68 to 63%. However, regression analyses indicated these associations were explained primarily by behavioral psychopathic symptoms, rather than interpersonal or affective traits. Implications for the use of psychopathy assessments for risk during adolescence are discussed.     

A Statistical Consideration Regarding the Threshold of the Psychopathy Checklist–Revised

The Psychopathy Checklist–Revised (PCL–R; Hare, 2003 Hare, R. D. (2003). Hare Psychopathy Checklist–Revised technical manual (2nd ed.). Toronto, ON, Canada: Multi-Health Systems. [Google Scholar]) is one of the most commonly used measures of psychopathy. Scores range from 0 to 40, and legal and mental health professionals sometimes rely on a cut score or threshold to classify individuals as psychopaths. This practice, among other things, assumes that all items contribute equally to the overall raw score. Results from an item response theory analysis (Bolt, Hare, Vitale, &; Newman, 2004 Bolt, D. M., Hare, R. D., Vitale, J. E., &; Newman, J. P. (2004). A multigroup item response theory analysis of the Psychopathy Checklist–Revised. Psychological Assessment, 16, 155–168. doi:10.1037/1040-3590.16.2.155[Crossref], [PubMed], [Web of Science ®] , [Google Scholar]), however, indicate that PCL–R items differ in the amount of information they can provide about psychopathy. We examined the consequences of these item differences for using a cut score, detailing the consequences for a previously applied cut score of 30 as an example. Results indicated that there were more than 8.5 million different response combinations that equaled 30 and more than 14.2 million that equaled 30 or more. This raw score, like others, corresponded to a broad range of PCL–R-defined psychopathy, indicating that applying cut scores on this measure results in imprecise quantifications of psychopathy. We show that by using the item parameters along with an individual's particular scores on the PCL–R items, it is possible to arrive at a more precise understanding of an individual's level of psychopathy on this instrument.     

The reliability and validity of the psychopathy checklist: youth version (PCL:YV) in nonincarcerated adolescent males

Current knowledge about the validity of the psychopathy syndrome in youth is limited largely to studies relying on parent-teacher rating scales or slight modifications of adult measures. Recently, the Psychopathy Checklist: Youth Version (PCL:YV) was designed for use with adolescents. However, most studies that have used this measure examined incarcerated males and addressed only validity criteria related to antisocial behavior. We investigated the generality and construct validity of the psychopathy syndrome in an adolescent sample by assessing 115 adolescent males on probation with the PCL:YV. Reliability of measurement was high. PCL:YV ratings predicted not only antisocial behaviour but also other indices of childhood psychopathology, interpersonal behaviors associated with adult psychopathy, and a lack of attachment to parents. These findings suggest that the PCL:YV identifies a syndrome in adolescence consistent with theory and research on adult males.