Dangerous, depraved, and death-worthy: A meta-analysis of the correlates of perceived psychopathy in jury simulation studies.

OBJECTIVES: Experimental research suggests that legal defendants described as psychopathic are generally, although not uniformly, judged more negatively and punitively. Understanding the correlates of perceived psychopathy, regardless of exposure to mental health evidence, is an important step towards clarifying divergent findings. METHOD: We conducted a quantitative synthesis of ten juror simulation studies (combined N = 2,980) examining the meta-analytic association between perceived defendant psychopathy and various psychologically important and legally relevant outcomes. RESULTS: Perceiving someone as being more psychopathic was associated with viewing that defendant as more dangerous (r W = 0.31) and evil ( r W = 0.44). Moreover, perceptions of defendant psychopathy predicted greater support for more adverse consequences in terms of capital sentencing ( r W = 0.22) and sentence length ( r W = 0.27), although not perceived treatment amenability ( r W = 0.09). CONCLUSIONS: These findings highlight the importance of including ratings of perceived psychopathy in experimental designs to identify the circumstances under which psychopathy evidence might prejudicially impact case outcomes.

Triarchic Model Personality Traits and Their Impact on Mock Juror Perceptions of a White-Collar Criminal Defendant.

The triarchic model of psychopathy proposes that this personality disorder is composed of 3 relatively distinct constructs: meanness, disinhibition, and boldness. Although the first 2 components are widely accepted, boldness has generated considerable theoretical debate concerning its relevance-largely due to its association with various ostensibly adaptive characteristics and socially desirable behaviors (e.g., self-reported heroism). But is being bold actually perceived by others as an intrinsically adaptive, socially desirable personality trait? We investigated this question using a novel approach-a jury simulation study that manipulated the level of triarchic traits exhibited by a white-collar criminal. More specifically, 330 community members read a vignette in which the defendant's degree of boldness and disinhibition was manipulated and then provided sentence recommendations and other evaluative ratings. As hypothesized, manipulating boldness and disinhibition resulted in more negative views of the defendant, with the boldness manipulation more consistently predicting higher global psychopathy, "meanness," and "evil" ratings. Surprisingly, neither manipulation predicted sentence recommendations, although higher global psychopathy ratings did correlate with more punitive sentence recommendations. The presence of personality traits construed in some contexts as advantageous or socially desirable can be perceived as more dysfunctional and undesirable in other contexts-particularly when they cooccur with criminal behavior.

"So, what is a psychopath?" Venireperson perceptions, beliefs, and attitudes about psychopathic personality.

This study surveyed over 400 individuals attending jury duty regarding various perceptions, attitudes, and beliefs they had concerning psychopathic personality (psychopathy). The protocol included (a) prototype ratings of what participants considered to be core features, using the Comprehensive Assessment of Psychopathic Personality (CAPP) prototype rating scale; (b) questions concerning knowledge and beliefs about psychopathy (e.g., prevalence in society); and (c) attitudinal scales concerning potential associated features (e.g., criminality, rehabilitation potential), etiological underpinnings, and moral judgments and legal sanctions. Consistent with results of earlier studies using expert raters, jury panel members rated most of the 33 individual CAPP items and all 6 CAPP scales as at least moderately prototypical, with Self and Dominance domains obtaining the highest mean ratings. Many participants also strongly endorsed symptoms of psychosis (e.g., delusions) as prototypical of psychopathy. Despite this, they viewed psychopaths as responsible for their own actions, as capable of determining right from wrong, and as generally not "insane." Our findings indicate that jury panel members view the prototypical psychopath as highly dominant, self-focused, and lacking in remorse and empathy and reinforce the need for expert witnesses to clearly differentiate between psychopathy and psychotic-spectrum disorders.

Can the Comprehensive Assessment of Psychopathic Personality Be Used to Measure the Triarchic Model Constructs of Boldness, Meanness, and Disinhibition? A Scale Derivation Study.

Can the components of the triarchic model of psychopathy (i.e., boldness, meanness, disinhibition) be operationalized using the item pool comprising the Comprehensive Assessment of Psychopathic Personality (CAPP) model? To address this question, the authors first derived CAPP-based triarchic scales using standard item-selection procedures and then examined the external correlates of these provisional scales in three archival data sets: (a) U.S. jail inmates administered the institutional rating scale version of the CAPP and (b and c) prototypicality ratings of the CAPP traits provided by Swedish forensic mental health professionals and U.S. probation officers. Although most research on triarchic constructs has relied exclusively on self-report inventories, the results suggest that the CAPP model can be reorganized to reflect boldness, meanness, and disinhibition and that its institutional rating scale items can effectively quantify these constructs using interview and file review data. Implications for future research on the measurement and assessment of psychopathic traits are discussed.

Examining the psychometric properties of the Barratt Impulsiveness Scale-Brief Form in justice-involved samples.

Impulsivity is an important component of many forms of psychopathology. Though widely used as an index of this construct, the 30-item Barratt Impulsiveness Scale-11 (BIS-11) has demonstrated questionable psychometric properties in several research reports. An 8-item shortened version has recently been proposed, the Barratt Impulsiveness Scale-Brief (BIS-Brief) form, which was designed to overcome some of the limitations of the longer scale. In this report, we examine the internal structure and theoretically relevant external correlates of this new short form in large archival samples of individuals involved in the criminal justice system (prison inmates, substance abusers in mandatory treatment, and forensic inpatients). Confirmatory factor analysis of the BIS-Brief indicates adequate fit following a relatively minor modification. Correlations between the BIS-Brief and an array of criterion measures-other self-report scales, interview-based measures, and behavioral outcomes-are consistent with predictions and show relatively little or no decrement in predictive validity when compared with the 30-item BIS-11. Our results suggest that the BIS-Brief is a promising brief measure of impulsivity that evinces good psychometric properties across a range of offender samples.