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Personality Traits as Predictors of Inpatient Aggression in a High-Security Forensic Psychiatric Setting: Prospective Evaluation of the PCL-R and IPDE Dimension Ratings

NCJ Number
International Journal of Offender Therapy and Comparative Criminology Volume: 55 Issue: 3 Dated: May 2011 Pages: 392-415
Calvin M. Langton; Todd E. Hogue; Michael Daffern; Aisling Mannion; Kevin Howells
Date Published
May 2011
24 pages
This study explored the use of personality traits as a means of determining specialized care for high-risk offenders.
The Dangerous and Severe Personality Disorder (DSPD) initiative in England and Wales provides specialized care to high-risk offenders with mental disorders. This study investigated the predictive utility of personality traits, assessed using the Psychopathy ChecklistRevised (PCL-R) and the International Personality Disorder Examination, with 44 consecutive admissions to the DSPD unit at a high-security forensic psychiatric hospital. Incidents of interpersonal physical aggression (IPA) were observed for 39 percent of the sample over an average 1.5-year period following admission. Histrionic personality disorder (PD) predicted IPA, and Histrionic, Borderline, and Antisocial PDs all predicted repetitive (2+ incidents of) IPA. PCL-R Factor 1 and Facets 1 and 2 were also significant predictors of IPA. PCL-R Factor 1 and Histrionic PD scores were significantly associated with imminence of IPA. Results were discussed in terms of the utility of personality traits in risk assessment and treatment of specially selected high-risk forensic psychiatric patients in secure settings. (Published Abstract)