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Two-factor conceptualization of psychopathy: Construct validity and assessment implications.

Timothy J. Harpur, Robert D. Hare, A. Ralph Hakstian

Abstract

Two correlated factors have been identified in the Psychopathy Checklist (PCL), a valide and reliable instrument for the assessment of psychopathy in male prison populations. Factor 1 measures a selfish, remorseless, and exploitative use of others, and Factor 2 measures a chronically unstable and antisocial life-style. We examined the psychometric properties of the factor solutions and a variety of correlates of the two factors

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Key concepts: Psychopathy, Psychology, Psychopathy Checklist, Conceptualization, Construct validity, Psychometrics, Antisocial personality disorder, Test validity