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Criminal Justice and Behavior
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A Comparison of Factor Models on the PCL-R With Mentally Disordered Offenders

The Development of a Four-Factor Model

Michael J. Vitacco

Mendota Mental Health Institute, vitacmj{at}dhfs.state.wi.us

Richard Rogers

University of North Texas

Craig S. Neumann

University of North Texas

Kimberly S. Harrison

University of North Texas

Gina Vincent

University of Massachusetts Medical School

For more than a decade, researchers and practitioners have generally accepted a two-factor model for the Psychopathy Checklist-Revised (PCL-R) composed of core personality features and an antisocial lifestyle. Very recently, Cooke and Michie (2001) proposed a three-factor solution that divided the core personality features into two dimensions while eliminating antisocial behavior. This study of male, mentally disordered offenders (N = 96) directly compared factor models via confirmatory factor analysis (CFA). When using testlets to combine theoretically similar items into single ratings, the nested three-factor model was an excellent fit. Of importance, the development of a four-factor model with the inclusion of antisocial items also produced an excellent fit. Combined with recent research, these findings have important ramifications for the construct validity of the PCL-R.

Key Words: psychopathy • CFA • mentally disordered offenders

Criminal Justice and Behavior, Vol. 32, No. 5, 526-545 (2005)
DOI: 10.1177/0093854805278414
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 Int J Offender Ther Comp CriminolHome page
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