Screening for Psychopathy: Validation of the Psychopathic Personality Inventory-Short Form with Reference Scores

The current study reports validation results for the Psychopathic Personality Inventory (PPI) and its subscales, and for a newly developed PPI-Short Form (PPI-SF) in forensic and non-forensic populations. We also provide criterion reference scores for the PPI and the PPI-SF. In Study 1, we used PPI data from 1,065 participants and supplementary PCL-R data from a subsample of 91 forensic offenders. Mokken scale analysis was used to construct the PPI-SF. In Study 2, PPI-SF and PCL-R data were collected from 60 participants. The study yielded promising but preliminary support for the construct validity of the PPI and the PPI-SF. The PPI-SF is of interest for risk assessment because of its (a) strong relationship with the PCL-R total score and (b) subscales known for their predictive value for violence and criminal recidivism.     

Verläufe bei sexuellen Tötungen

This article summarizes main results of studies on forensic psychiatric court reports on 166 men who had been persecuted between 1963 and 1991 for a sexual offence leading to the death of the victim. Comparing perpetrators with a single victim and those with multiple victims we found similar results as in two previous studies with smaller samples: Multiple sexual homicide perpetrators showed more often sexual sadism and other paraphilias, as well as antisocial, schizoid and sadistic personality disorders. Follow-up data from the federal criminal records could be obtained for 139 offenders. Ninety perpetrators had been released after a mean detention of 12.2 years, whereas the 49 offenders who were still in prison or forensic psychiatric hospitals had been detained for a mean period of 20.6 years. The non-released offenders showed more often paraphilias as well as antisocial and sadistic personality disorders than the released perpetrators. Paraphilias and antisocial personality traits are empirically well proven risk factors for criminal recidivism with sexual reoffences. In addition, the non-released sexual homicide perpetrators had higher scores in all applied risk assessment instruments (PCL-R, HCR-20, SVR-20, Static-99). Among the released offenders only 1.1% (n=1) reoffended with a completed homicide and 2.2% (n=2) with attempted homicide. The recidivism rates with sexual and other violent reoffences in this sample of sexual homicide perpetrators were similar to those in a large meta-analysis on recidivism in sexual offenders by Hanson and Morton-Bourgon (4). Since well established risk factors had apparently been “used-up” for the decisions about release or non-release, in the follow-up data about the released offenders only age at the sexual homicide and age at the time of release were found as risk factors for recidivism with any violent (sexual or non-sexual) reoffence, i.e. the younger the offender at the time of the homicide and the younger at the time of release, the more likely is the risk of violent reoffending.     

The Roles of Childhood Maltreatment and Psychopathy in Sexual Recidivism of Treated Sex Offenders

Abstract

The Intensive Treatment Program for Sexual Offenders (ITPSO) at the Correctional Service of Canada (CSC) provides cognitive-behavioral group treatment to federally incarcerated sex offenders. Follow-up data for 81 of these men were examined, looking at psychopathy and childhood maltreatment history as potential predictors of recidivism using Survival Analysis. Offenders who had been placed in foster care as a child were more likely to recidivate; however when PCL-R Factor 2 scores (a history of antisocial behavior) were entered, they predicted over and above foster care history. Childhood physical abuse predicted sexual recidivism; however, childhood sexual abuse and PCL-R scores did not predict sexual recidivism. PCL-R Factor 2 scores predicted violent recidivism.     

The utility of the Psychopathy Checklist-Revised (PCL-R) facet and item scores in predicting violent recidivism

There is relatively limited research on psychopathy in non-Caucasian ethnic groups and even less on the utility of the Psychopathy Checklist-Revised (PCL-R) that focuses on PCL-R facet and item scores in predicting violent recidivism. In this study, we assessed the utility of the PCL-R in prospectively predicting violent versus nonviolent recidivism during an 11-year follow-up window. A high-risk sample of 451 incarcerated Korean male offenders was assessed on the PCL-R at baseline. A total of 445 were reconvicted after release (353 violent and 92 nonviolent recidivists). Psychopathy facet scores were higher in violent compared to nonviolent recidivists. Facet 2 (affective) showed the strongest effect size (Cohen's d = 0.53; Percentage change in odds = 22.6%) in predicting violent recidivism. Analyses of the four items constituting the affective facet indicated that callous/lack of empathy (Percentage change in odds = 134.4%) and failure to accept responsibility (Percentage change in odds = 94.5%) were the strongest predictors of violent recidivism. Findings are to our knowledge the first to document the utility of the PCL-R in distinguishing violent from nonviolent recidivism and highlight the role of affective impairment (particularly lack of empathy) in violent recidivism.     

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.     

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.     

Über die Treffsicherheit der standardisierten Risikoeinschätzungsverfahren Static-99 und Stable-2007 bei aus einer Sicherungsmaßnahme entlassenen Sexualstraftätern

The accuracy of the recidivism risk assessment instruments Static-99 and Stable-2007 for sexual offenders was examined in a population of released male forensic sexual offenders hospitalized under mandatory treatment in Austria (N?=?96). The Static-99 with an area under the curve (AUC) ?value of 0.86 and the Stable-2007 (AUC?=?0.71) were significantly related to sexual reoffending after nearly 7 years time at risk, thus revealing a predictive power comparable with offenders released from prison (N?=?274). Also the Stable-2007 incrementally supplemented the predictive accuracy of the Static-99. Static-99/Stable-2007 risk/need categories identified a high risk group with a 50?% chance for sexual reconviction within 5 years after release despite a favorable risk assessment as the precondition for release and post-release risk management. On the other hand, there was virtually no relapse in the three lowest risk categories suggesting a specific effect of the mandatory treatment at least in these offender categories. The data suggest that the instruments are valid not only for offenders released from prison but also for forensic sexual offenders.     

Does the Convergent Validity of the PAI Antisocial Features Scale Depend on Offender Response Style?

Researchers have recently questioned the utility of the response style indicators included on many self-report measures of personality and psychopathology. We examined whether the size of convergent validity coefficients for Personality Assessment Inventory (PAI) Antisocial Features (ANT) scores depends on PAI validity scale scores. Using PAI and Psychopathy Checklist–Revised (PCL–R) scores from 477 offenders evaluated for civil commitment as sexually violent predators, we found that PAI Positive Impression (PIM), Negative Impression (NIM), Malingering Index (MAL), Defensiveness Index (DEF), and Infrequency (INF) scores moderated the association between ANT and PCL–R scores. The association between ANT and PCL–R scores decreased as offenders overstated psychopathology (i.e., higher NIM or MAL scores) or exhibited increasing disengagement (i.e., higher INF scores). However, the association between ANT and PCL–R scores increased as offenders engaged in defensive reporting (i.e., higher PIM or DEF scores). The interaction effects were most common for ANT–E (Egocentricity), and to a lesser extent ANT–A (Antisocial Behaviors). PAI discriminant function validity indexes did not exhibit moderating effects on ANT and PCL–R scores. There was no evidence of validity scale suppression effects. These findings provide support for the potential role of some PAI response style measures for ANT scale interpretation in forensic settings.     

Factor structure and behavioural correlates of the Psychopathy Checklist-Revised [PCL-R] in a Brazilian prisoner sample

The present study examines the reliability, factor structure, and criterion-related validity of Hare (2003) Revised Psychopathy Checklist [PCL-R] in a Latin American forensic context. Brazilian male inmates (124) were administered the PCL-R, along with relevant subscales of an inventory of normal personality [Personality Factorial Inventory], an intelligence scale [Standard Progressive Matrices], and a semi-structured interview based in DSM IV. Criminal offence records were obtained from prison files. Several theoretical factorial structures for the PCL-R were tested and compared. A bifactor model with three factors, one general factor reflecting the overlap across all items, and two independent subfactors reflecting the unique covariation among particular groups of items, shows the better fit. Overall scores on the PCL-R correlated with the number of criminal offenses committed by participants. No significant correlations were found between PCL-R scores and personality or intelligence measures. It was concluded that the PCL-R is a reliable and valid instrument for the assessment of psychopathy in the Brazilian male forensic population.     

The sexually violent offender: Impulsive or ritualistic?

The article presents and develops a paradigm of serial, sexual offenders derived from our criminal investigative analysis experience and research. The paradigm delineates two major categories of sexually violent offenders. The Impulsive Offender is described as being criminally unsophisticated, and largely reactive in terms of his victim selection and crime-scene behavior. It is observed that this type of offender is often characterized by a diverse criminal history, rather generic sexual interests, and significant levels of physical violence. The Ritualistic Offender, in contrast, is characterized by diverse paraphilic interests, a pervasive and defining fantasy life, and a carefully developed and executed set of crime-scene behaviors. These two distinctions are examined as they inform the analysis of a sexually violent crime by criminal investigative analysts as well as the clinical evaluation of these offenders within a forensic context. The potential utility of this type of paradigmatic delineation for risk assessments and for assessing the potential for future recidivism is also highlighted.     

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.     

Rorschach correlates of sexual abuse: trauma content and aggression indexes

This study compared Rorschach records of nondissociative outpatients with histories of (a) definite sexual abuse (n = 22), (b) suspected but unconfirmed sexual abuse (n = 13), or (c) no sexual abuse (n = 43) on selected variables hypothesized to be associated with sexual abuse. As predicted, clients with definite sexual abuse scored significantly higher than clients known not to be sexually abused on Armstrong and Loewenstein's (1990) Trauma Content index (TC/R), with an effect size greater than 1 SD. Contrary to prediction, there was no significant difference in the frequency of their Aggressive Past (AgPast; Gacono & Meloy, 1994) scores. AgPast scores, however, did positively correlate with sexual abuse that was violent or sadistic. As a test of discriminant validity, we hypothesized that 2 Rorschach variables (PER and Sc) would be unrelated to sexual abuse. This was supported by our data. Although TC/R was strongly associated with the presence and severity of sexual abuse, it could not discriminate sexually abused from nonsexually abused clients with great accuracy. The TC/R score is 1 factor among many that can be used to assess the validity of clients' claims of past sexual abuse.     

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.     

A prospective comparison of two measures of psychopathy in the prediction of institutional misconduct

This study examined the predictive validity of two widely used measures of psychopathic traits, the Psychopathy Checklist--Revised (PCL-R; Hare, 2003) and the Psychopathic Personality Inventory (PPI; Lilienfeld & Andrews, 1996). Records of institutional infractions were obtained for a young adult sample of prison inmates (N = 46), who were followed for approximately two years following administration of these two scales. The PPI total and two factor scores predicted the total number of infractions committed (r ranging from .28 to .36). PPI Factor I showed some evidence of stronger associations with non-aggressive infractions (r = .36), whereas PPI Factor II was the strongest correlate of aggressive misconduct (r = .24). The total and facet scores of the PCL-R were not significantly predictive of any form of institutional misconduct, with effect sizes ranging from negligible to small (median r = .14, r ranging from -.01 to .21).     

The Personality Assessment Inventory as a proxy for the Psychopathy Checklist Revised: testing the incremental validity and cross-sample robustness of the Antisocial Features Scale

The Personality Assessment Inventory's (PAI's) ability to predict psychopathic personality features, as assessed by the Psychopathy Checklist-Revised (PCL-R), was examined. To investigate whether the PAI Antisocial Features (ANT) Scale and subscales possessed incremental validity beyond other theoretically relevant PAI scales, optimized regression equations were derived in a sample of 281 Canadian federal offenders. ANT, or ANT-Antisocial Behavior (ANT-A), demonstrated unique variance in regression analyses predicting PCL-R total and Factor 2 (Lifestyle Impulsivity and Social Deviance) scores, but only the Dominance (DOM) Scale was retained in models predicting Factor 1 (Interpersonal and Affective Deficits). Attempts to cross-validate the regression equations derived from the first sample on a sample of 85 U.S. sex offenders resulted in considerable validity shrinkage, with the ANT Scale in isolation performing comparably to or better than the statistical models for PCL-R total and Factor 2 scores. Results offer limited evidence of convergent validity between the PAI and the PCL-R.     

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.     

On individual differences in person perception: raters' personality traits relate to their psychopathy checklist-revised scoring tendencies

This study investigated raters' personality traits in relation to scores they assigned to offenders using the Psychopathy Checklist-Revised (PCL-R). A total of 22 participants, including graduate students and faculty members in clinical psychology programs, completed a PCL-R training session, independently scored four criminal offenders using the PCL-R, and completed a comprehensive measure of their own personality traits. A priori hypotheses specified that raters' personality traits, and their similarity to psychopathy characteristics, would relate to raters' PCL-R scoring tendencies. As hypothesized, some raters assigned consistently higher scores on the PCL-R than others, especially on PCL-R Facets 1 and 2. Also as hypothesized, raters' scoring tendencies related to their own personality traits (e.g., higher rater Agreeableness was associated with lower PCL-R Interpersonal facet scoring). Overall, findings underscore the need for future research to examine the role of evaluator characteristics on evaluation results and the need for clinical training to address evaluators' personality influences on their ostensibly objective evaluations.     

Score Metric Equivalence of the Psychopathy Checklist-Revised (PCL-R) across criminal offenders in North America and the United Kingdom: a critique of Cooke, Michie, Hart, and Clark (2005) and new analyses

David Cooke and colleagues have published a series of item response theory (IRT) studies investigating the equivalence of the Psychopathy Checklist-Revised (PCL-R) for European versus North American (NA) male criminal offenders. They have consistently concluded that PCL-R scores are not equivalent, with European offenders receiving scores up to five points lower than those in NA when matched according to the latent trait. In this article, the authors critique the Cooke et al. analyses and demonstrate how their anchor item selection method is responsible for their final conclusions concerning the apparent lack of equivalence. The authors provide a competing IRT analysis using an iterative purification strategy for anchor item selection and show how this more justifiable approach leads to very different conclusions regarding the equivalence of the PCL-R. More generally, it is argued that strong interpretations of IRT analyses in the presence of uncorroborated anchor items can be highly misleading when evaluating score metric equivalence.     

Criterion-related validity of the three-factor model of psychopathy: personality, behavior, and adaptive functioning

The Psychopathy Checklist-Revised (PCL-R) has been conceptualized as indexing two distinct but correlated factors. Previous research has established that these factors demonstrate distinct patterns of relations with external criteria. However, more recent findings suggest that the PCL-R psychopathy construct may encompass three distinguishable factors, reflecting affective, interpersonal, and behavioral symptoms. Here, we evaluated the validity of this newer three-factor model of the PCL-R factors with reference to external criteria from the domains of personality, antisocial behavior; and adaptive functioning in a sample of 310 incarcerated offenders. The interpersonal factor was related to social dominance, low stress reactivity, and higher adaptive functioning; the affective factor was correlated with low social closeness and violent offending; and the behavioral factor was associated with negative emotionality, disinhibition, reactive aggression, and poor adaptive functioning. These findings provide support for the convergent and discriminant validity of these psychopathy facets.     

Zur rückfallprognostischen Bedeutung des Tatverhaltens bei Sexualdelinquenz

The study examined the possibility of predicting sexual recidivism within a period of 5 years in a sample of 612 male sex offenders by means of behavioural crime scene variables. A total of 20 variables were selected based on a significant bivariate correlation with sexual recidivism. Multivariate analysis was conducted to determine combined predictive accuracy. Step-wise reverse logistic regression extracted 12 variables explaining 22% of total variance in sexual recidivism. The unweighted sum score of these variables showed considerable predictive power (AUC?=?0.76; r?=?0.34). Findings were robust not only for different subgroups of sexual offenders, but also when cross-validated on an independent sample. In addition, the unweighted sum score showed significant incremental validity above and beyond common risk measures [Static99, Sexual Violence Risk- (SVR-)20], both in the original and the cross-validation sample. Thus, the potential of crime scene analysis in predicting sexual recidivism has been clearly demonstrated. Future research should provide a more accurate access to psychologically meaningful interpretations of the risk immanent in crime scene actions by adapting risk scales to certain subgroups of perpetrators.