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dc.contributor.authorMorrissey, Catrin
dc.date.accessioned2017-09-20T16:01:44Z
dc.date.available2017-09-20T16:01:44Z
dc.date.issued2010
dc.identifier.citationMorrissey, C., Cooke, D., Michie, C., Hollin, C., Hogue, T., Lindsay, W. R. & Taylor, J. L. (2010). Structural, item, and test generalizability of the psychopathy checklist--revised to offenders with intellectual disabilities. Assessment, 17 (1), pp.16-29.
dc.identifier.other10.1177/1073191109344052
dc.identifier.urihttp://hdl.handle.net/20.500.12904/10607
dc.description.abstractThe Psychopathy Checklist-Revised (PCL-R) is the most widely used measure of psychopathy in forensic clinical practice, but the generalizability of the measure to offenders with intellectual disabilities (ID) has not been clearly established. This study examined the structural equivalence and scalar equivalence of the PCL-R in a sample of 185 male offenders with ID in forensic mental health settings, as compared with a sample of 1,212 male prisoners without ID. Three models of the PCL-R's factor structure were evaluated with confirmatory factor analysis. The 3-factor hierarchical model of psychopathy was found to be a good fit to the ID PCL-R data, whereas neither the 4-factor model nor the traditional 2-factor model fitted. There were no cross-group differences in the factor structure, providing evidence of structural equivalence. However, item response theory analyses indicated metric differences in the ratings of psychopathy symptoms between the ID group and the comparison prisoner group. This finding has potential implications for the interpretation of PCL-R scores obtained with people with ID in forensic psychiatric settings.;
dc.description.urihttp://journals.sagepub.com/doi/abs/10.1177/1073191109344052
dc.subjectAntisocial personality disorder
dc.subjectIntellectual disability
dc.subjectPrisoners
dc.titleStructural, item, and test generalizability of the psychopathy checklist--revised to offenders with intellectual disabilities
dc.typeArticle


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