The Psychopathy Checklist-Revised (PCL-R;Hare, 2003) is a professional rating scale that enjoys widespread use in forensic and correctional settings, primarily as a tool to inform risk assessments in a variety of types of cases (e.g., parole determinations, sexually violent predator [SVP] civil commitment). Although widely described as "reliable and valid" in research reports, several recent field studies have suggested that PCL-R scores provided by examiners in forensic cases are significantly less reliable than the interrater reliability values reported in research studies. Most of these field studies, however, have had small samples and only examined SVP civil commitment cases. This study builds on existing research by examining the reliability of PCL-R scores provided by forensic examiners in a much more extensive sample of Canadian criminal cases. Using the LexisNexis database, we identified 102 cases in which at least 2 scores were reported (of 257 total PCL-R scores). The single-rater intraclass correlation coefficient (ICCA1) was .59, indicating that a large percentage of the variance in individual scores was attributable to some form of error. ICC values were somewhat higher for sexual offending cases (.66) than they were for nonsexual offending cases (.46), indicating that poor interrater reliability was not restricted specifically to the assessment of sexual offenders. These and earlier findings concerning field reliability in legal cases suggest that the standard error of measurement for PCL-R scores that are provided to the courts is likely to be much larger than the value of 2.90 reported in the instrument's manual.

Assessments of psychopathic traits are used on a routine basis in forensic evaluations across Westernized countries. Despite this, consensus has not yet emerged concerning what exactly are the "core" features of this construct. Moreover, relatively little is known about how practitioners in the field construe this disorder. This study explored perceptions and attitudes regarding psychopathy among individuals working in the forensic mental health system (N = 90) in Sweden. Participants provided prototype ratings of what they considered to be core psychopathy features based on the Comprehensive Assessment of Psychopathic Personality (CAPP), a model that increasingly is the focus of research in North America and Europe. The study protocol also included questions regarding (a) global perceptions and attitudes about a number of aspects of the psychopathy construct (e.g., personal experience, perceived prevalence), and (b) attitudinal scales that assessed perceived correlates of psychopathic traits across a variety of domains (e.g., violence proneness, treatment amenability) and moral judgments and attitudes concerning how psychopathic offenders should be treated within the legal system. The majority of the 33 individual CAPP items and the six CAPP scales were rated as at least moderately prototypical of psychopathy, with Dominance, Self, and Attachment domains obtaining the highest mean ratings. Participants viewed psychopaths as more likely to commit crimes than the average criminal, without being blatantly "evil" people. We believe our results help to advance our understanding of the psychopathy construct by exploring forensic professionals' perceptions of this disorder in general and in relation to the CAPP model specifically.

Although typically described as reliable and valid, the Psychopathy Checklist-Revised (PCL-R) has come under some criticism by researchers in the last half-decade due to evidence of poor interrater reliability and adversarial allegiance being reported in applied settings in North America. This study examines the field reliability of the PCL-R using a naturalistic test-retest design among a sample of Swedish life sentenced prisoners (N = 27) who had repeatedly been assessed as part of their application to receive a reduced prison term. The prisoners, who were assessed by a team of forensic evaluators retained by an independent government authority, had spent on average 14 years in prison with a mean time from Assessment 1 to Assessment 2 of 2.33 years. The overall reliability of the PCL-R (ICC(A1)) was .70 for the total score and .62 and .76 for Factor 1 and 2 scores, respectively. Facet 1-3 scores ranged from .54 to .60, whereas Facet 4 was much higher (.90). Reliability of individual items was quite variable, ranging from .23 to .80. In terms of potential causes of unreliability, both high and low PCL-R scores at the initial assessment tended to regress toward the mean at the time of the second evaluation. Our results are in line with previous research demonstrating concerns regarding the reliability of the PCL-R within judicial settings, even among independent evaluation teams not retained by a particular side in a case. Collectively, these findings question whether the interpersonal (Facet 1) and affective (Facet 2) features tapped by the PCL-R are reliable enough to justify their use in legal proceedings.

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Background Previous research has noted trends of increasing internalizing problems (e.g., symptoms of depression and anxiety), particularly amongst adolescent girls. Cross-cohort comparisons using identical assessments of both anxiety and depression in youth are lacking, however. Methods In this large twin study, we examined trends in internalizing symptoms in samples of 9 year old children and 15 year old adolescents, gathered from successive birth cohorts from 1998 to 2008 (age 9) and 1994–2001 (age 15). Assessments at age 9 were parent-rated, and at age 15 self- and parent-rated. We examined ( i ) the relation between birth cohorts and internalizing symptoms using linear regressions, and ( ii ) whether percentages of participants exceeding scale cut-off scores changed over time, using Cochrane Armitage Trend Tests. Results Among 9 year old children, a significantly increasing percentage of participants (both boys and girls) had scores above cut-off on anxiety symptoms, but not on depressive symptoms. At age 15, a significantly increasing percentage of participants (both boys and girls) had scores above cut-off particularly on self-reported internalizing symptoms. On parent-reported internalizing symptoms, only girls demonstrated a corresponding trend. Conclusion In line with previous studies, we found small changes over sequential birth cohorts in frequencies of depression and anxiety symptoms in children. Further, these changes were not exclusive to girls.