Covariates of the Severity of Aggression in Sexual Crimes: Psychopathy and Borderline Characteristics

Abstract

Whereas risk assessment literature on sexual offending has primarily focused on prediction of subsequent sexual crimes, and not the severity of those crimes, the first aim of the present study was to identify variables that predict the amount of damage to victims in sexual crimes compared with those that predict general aggressiveness. The second aim was to ascertain whether adding emotional instability measurements, as in borderline personality disorder (BPD), would add incremental variance to that captured by the facets of the Psychopathy Checklist-Revised (PCL-R). Trained raters assessed on the PCL-R, BPD, and measures of severity of sexual and nonsexual violence 302 adults who had sexually offended. PCL-R's Antisociality and two externalizing BPD factors (one from the standard and one from the alternative criteria) were significant predictors of violence both in sexual and nonsexual crimes. In contrast, deficits in the PCL-R's Affective facet (2) predicted victim damage in sexual contexts only, whereas the Lifestyle Impulsivity facet (3) of the PCL-R predicted violence in nonsexual contexts only. These findings suggest that adding measures of emotional dysregulation to commonly used instruments like the PCL-R, which assesses callousness and antisociality, may be beneficial for predicting violence.

Keywords: borderline personality disorder; child molestation; child molesters; dangerousness; personality disorder; psychopathy; rape; rapists; risk assessment; sex offenses; sexual offending.