ERIC Number: EJ775202
Record Type: Journal
Publication Date: 2007-Sep
Reference Count: 0
A Taxometric Analysis of the Psychopathy Checklist: Screening Version (PCL:SV): Further Evidence of Dimensionality
Walters, Glenn D.; Gray, Nicola S.; Jackson, Rebecca L.; Sewell, Kenneth W.; Rogers, Richard; Taylor, John; Snowden, Robert J.
Psychological Assessment, v19 n3 p330-339 Sep 2007
A taxometric analysis of the Psychopathy Checklist: Screening Version (PCL:SV; S. D. Hart, D. N. Cox, & R. D. Hare, 1995) was performed on a group of 2,250 male and female forensic/psychiatric patients and jail/prison inmates. The 4 PCL:SV facet scores (Interpersonal, Affective, Impulsive Lifestyle, Antisocial Behavior) served as indicators in this study, and the data were analyzed with 3 principal taxometric procedures-mean above minus below a cut, maximum eigenvalue, and latent mode factor analysis. The results show evidence of dimensional structure on the PCL:SV in the full sample as well as in all 8 subsamples (men, women, Whites, Blacks, hospital patients, jail/prison inmates, file review with an interview, file review without an interview). These findings corroborate recent taxometric research on the Psychopathy Checklist-Revised (R. D. Hare, 1991, 2003) in which results have been largely dimensional in nature. It is concluded that scores on the PCL:SV differ quantitatively as points on a dimension (high vs. low psychopathy) rather than partitioning into qualitatively distinct categories of behavior (psychopath vs. nonpsychopath).
Descriptors: Check Lists, Factor Analysis, Correctional Institutions, Antisocial Behavior, Patients, Psychopathology, Mental Disorders, Classification, Measures (Individuals), Psychiatric Hospitals, Scores
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Publication Type: Journal Articles; Reports - Research
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