Psychopathy has been conceptualized as a personality disorder with distinctive interpersonalaffective and behavioral deviance features. The authors examine correlates of the factors of the Psychopathic Personality Inventory (PPI), Self-Report Psychopathy-II (SRP-II) scale, and Antisocial Process Screening Device (APSD) to understand similarities and differences among the constructs embodied in these instruments. PPI Fearless Dominance and SRP-II Factor 1 were negatively related to most personality disorder symptoms and were both predicted by high Dominance and low Neuroticism. In addition, PPI Fearless Dominance correlated positively with antisocial personality features, although SRP-II Factor 1 did not. In contrast, PPI Impulsive Antisociality, SRP-II Factor 2, and both APSD factors correlated with antisocial personality features and symptoms of nearly all personality disorders, and were predicted by low Love. Results suggest ways in which the measurement of the constructs in each instrument may be improved.
KeywordsPsychopathic Personality Inventory; Self-Report Psychopathy-II scale; Antisocial Process Screening Device; psychopathy; self-report; nomological network Psychopathy is a personality disorder that is distinguished from common criminality and chronic antisociality by the presence of distinctive interpersonal-affective features (Hare, 2003;Harpur, Hare, & Hakstian, 1989;Lilienfeld, 1994;Lykken, 1995;Patrick & Lang, 1999). Recent self-report measures of psychopathy, including the Self-Report Psychopathy scale (SRP;Hare, 1985Hare, , 1991 and the Psychopathic Personality Inventory (PPI; Lilienfeld & Andrews, 1996), demonstrate better convergence and coverage of both the interpersonalaffective and antisocial lifestyle features of psychopathy. Factor analytic work on these and other self-report instruments of psychopathy has revealed that many of these instruments have a two-factor structure, each of which parses the interpersonal-affective and behavioral features into separate subscales (Benning, Patrick, Hicks, Blonigen, & Krueger, 2003;Frick, O'Brien, Wootton, & McBurnett, 1994;Hare, 1991). Here, we examined in an undergraduate sample the construct validity of the two-factor structures of the PPI, the SRP-II scale, and a self-report version of the Antisocial Process Screening Device (APSD; Frick & Hare, 2001). We examined the relations of each psychopathy factor to the others, to symptoms of other personality disorders, and to normal-range personality dimensions.Correspondence may be addressed either to Stephen D. Benning, Department of Psychology, University of Minnesota, 75 East River Road, Minneapolis, MN 55455 (e-mail: benn0224@umn.edu), or to Randall T. Salekin, Department of Psychology, University of Alabama, Box 870348, Tuscaloosa, AL 35487 (e-mail: rsalekin@bama.ua.edu). Cronbach and Meehl (1955) proposed the concept of the nomological network as a theoretical framework for understanding construct validity. In this framework, a network is set up between unobserved theoretical constructs ...