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Reliability and Validity of Two Self-Report Measures of Psychopathy
Diana Falkenbach
City University of New York, dfalkenbach{at}jjay.cuny.edu
Norman Poythress
University of South Florida
Marielle Falki
City University of New York
Sarah Manchak
University of California Irvine
The present study assessed the psychometric properties and construct validity of two self-report measures of psychopathy in a male-college sample: the Levenson Psychopathy scales (LPS; Levenson, Kiehl, & Fitzpatrick, 1995) and the Psychopathic Personality Inventory (PPI; Lilienfeld & Andrews, 1996). Both the LPS and the PPI demonstrated good internal consistency, although selected items from the PPI correlated weakly with their respective factor scores, suggesting the need for further investigation of the factors' item content. The PPI showed stronger validity than the LPS in terms of convergent and discriminant validity of its factor scores and factor associations with two criterion variables, aggression, and anxiety. Overall, the current study provides greater support for the use of the PPI over the LPS in studies investigating psychopathic traits in nonclinical and nonforensic samples.
Key Words: psychopathy psychopathy assessment psychometric properties PPI LPS self-report measures
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Assessment, Vol. 14, No. 4,
341-350 (2007)
DOI: 10.1177/1073191107305612

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