Psychopathic Expression From Early to Late Adulthood: An Item Response Theory Analysis of the Hare Psychopathy Checklist–Revised

Author:

Baglole J. Sebastian1ORCID,Tsang Siny2,Hare Robert D.34,Forth Adelle E.1

Affiliation:

1. Carleton University, Ottawa, Ontario, Canada

2. Washington State University, Spokane, WA, USA

3. University of British Columbia, Vancouver, British Columbia, Canada

4. Darkstone Research Group, Vancouver, British Columbia, Canada

Abstract

Several investigators have assessed the Psychopathy Checklist–Revised (PCL-R) for invariance across offender ethnicities and in correctional and forensic–psychiatric contexts. Yet we do not know whether, or to what extent, item properties among male offenders vary throughout adulthood. With a combined sample of PCL-R data on offenders from Canada and the United States ( N = 4,820), we measured item properties for offenders in age groups of Early (18-30 years old), Middle (31-49 years old), and Late (50+ years old) adulthood. Nine items showed differential item functioning across age group comparisons. Among the Early group, the PCL-R Interpersonal and Affective traits were most informative for measuring the latent trait of psychopathy. Among the Late group, the PCL-R Lifestyle and Antisocial items were most informative for the latent trait. These differences in item information illustrate how psychopathy manifests in male offenders throughout adulthood.

Publisher

SAGE Publications

Subject

Applied Psychology,Clinical Psychology

Reference28 articles.

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