PCL-R field validity in prison and hospital settings.

Recent field studies have questioned the interrater reliability (IRR) and predictive validity regarding (violent) recidivism of the Psychopathy Checklist-Revised (PCL-R). Using a forensic psychiatric sample, the current study investigated discrepancies in scoring between hospital and prison settings, as well as differences in predictive validity across these two settings. PCL-R information was collected from prison and hospital files, resulting in 224 PCL-R total scores and 74 double scores. When examining repeated measurements, large individual differences were found together with an intraclass correlation coefficient (ICCA,1) of .42 for the total score. Discrepant results were found for Factor 2, with repeated scores within the same setting having an ICCA,1 of .28 versus an ICCA,1 of .57 for repeated scores between settings. However, areas under the curve (AUCs) from receiver operating characteristic (ROC) analyses for total, factor and facet scores did not differ between settings. For the whole sample, Factor 2 scores marginally predicted violent and general recidivism after 2 years (AUC = .62 and .63), whereas Factor 1 did not predict (violent) recidivism. Consistent with recent studies from other countries, these results suggest inadequate field reliability and validity in prison and hospital settings in Flanders (Belgium). (PsycINFO Database Record

Intelligence is in the eye of the beholder: investigating repeated IQ measurements in forensic psychiatry.

BACKGROUND: A stable assessment of cognition is of paramount importance for forensic psychiatric patients (FPP). The purpose of this study was to compare repeated measures of IQ scores in FPPs with and without intellectual disability. METHODS: Repeated measurements of IQ scores in FPPs (n = 176) were collected. Differences between tests were computed, and each IQ score was categorized. Additionally, t-tests and regression analyses were performed. RESULTS: Differences of 10 points or more were found in 66% of the cases comparing WAIS-III with RAVEN scores. Fisher's exact test revealed differences between two WAIS-III scores and the WAIS categories. The WAIS-III did not predict other IQs (WAIS or RAVEN) in participants with intellectual disability. DISCUSSION: This study showed that stability or interchangeability of scores is lacking, especially in individuals with intellectual disability. Caution in interpreting IQ scores is therefore recommended, and the use of the unitary concept of IQ should be discouraged.

Internationalizing forensic assessments of criminal responsibility.

One of the important characteristics of current medicine is that it is an international endeavor. The fact that medicine is a global undertaking might even be one of its core strengths. However, the universal nature of medicine can be compromised when local issues become significant factors in medical practice. In this paper we identify criminal law as a relevant factor complicating the process of internationalizing a particular medical practice: the assessment of a defendant within the context of the question of criminal responsibility. Since criminal law--especially the laws relevant to assessments of criminal responsibility--may differ from country to country, or rather from jurisdiction to jurisdiction, forensic psychiatrists face the challenge of finding common ground and a common framework to advance these forensic psychiatric assessments. We describe the current situation and argue for internationalizing the discussion about this assessment, pointing to the example provided by assessments of competence.