Article2004

A Multigroup Item Response Theory Analysis of the Psychopathy Checklist-Revised.

Daniel M. Bolt · Robert D. Hare · Jennifer E. Vitale · Joseph P. Newman

260 citations0/0 files storedPsychological Assessment

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Psychopathy, Forensic Psychiatry, Sexual Offending Psychometric Methodologies and Testing Psychological Testing and Assessment

Abstract

Item response theory was used to investigate the functioning of the Psychopathy Checklist-Revised (PCL-R; R. D. Hare, 1991, 2003) in several offender populations. With male criminal offenders (N=3,847) as a reference group, differential item functioning analyses were performed for 3 comparison groups: female criminal offenders (N=1,219), male forensic psychiatric patients (N=1,246), and male criminal offenders scored from file reviews (N=2,626). Results are discussed in the context of the 2-factor, 4-facet model for the PCL-R (R. D. Hare, 2003; J. Parker, G. Sitarenios, & R. D. Hare, 2003). Application of a multigroup graded response model to all 4 groups suggests scalar equivalence may hold at least approximately for each population, although the PCL-R provided slightly greater information about the latent trait of psychopathy for male criminal offenders scored from the standard procedure.

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References

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