The SRP-II as a rich source of data on the psychopathic personality.

Abstract

This study examines the factor structure, external correlates, and predictive utility of the Self-Report Psychopathy scale (SRP-II;Hare, Harpur, & Hemphill, 1989). It was hypothesized that the SRP-II would sufficiently tap facets of the psychopathic personality, despite failing to replicate the structure of the PCL-R, and thereby provide a rich source of data for examining the construct of psychopathy as delineated by Cleckley (1941). Participants for the current investigation were 1257 undergraduate students who completed a battery of psychological tests.Exploratory factor analysis revealed that models with two to four factors made the most conceptual sense. Confirmatory factor analysis revealed a rationally-derived, four-factor model to have the best fit. Further analyses indicate these factors are linked to, and are significant predictors of, external correlates relevant to psychopathy.iii LIST OF ABBREVIATIONS AND SYMBOLS

A comparison of self-report measures of psychopathy among nonforensic samples using item response theory analyses.

“…The factor structure of the SRP-II was previously examined with the sample used in the current study (Lester et al, 2013); neither Hare et al’s (1989) original two-factor model nor Benning, Patrick, Salekin, and Leistico (2005); 23-item two-factor model was found to achieve adequate fit in this sample. Thus, Lester et al’s (2013) rationally derived 36-item four-factor model was used to test against a unidimensional SRP-II model. Across all four self-report measures, the factor models showed better fit than the unidimensional model; model fit indices are presented in supplementary material Appendix 1, Table 1.…”

“…A rationally derived 36-item four-factor model (Lester et al, 2013) was adopted in this study. The four factors are interpersonal (IP = 16 items), disinhibition/impulsivity (DI = nine items), fearlessness (F = five items), and coldheartedness (C = six items).…”

“…After making substantial revisions to the SRP-II, a four-factor solution that parallels the four-factor model of the PCL-R was proposed (Williams, Paulhus, & Hare, 2007). More recently, Lester, Salekin, and Sellbom (2013) proposed a rationally derived four-factor model from exploratory and confirmatory factor analyses. This 36-item four-factor SRP-II maps well onto the PCL-R’s four-factor structure, assessing features of interpersonal, disinhibition/impulsivity, fearlessness, and coldheartedness.…”

Spanish Adaptation and Validation of the 34-Item Self-Report Psychopathy Scale (SRP)

“…In the literature, it is also possible to find other reduced versions such as the 34 items developed by Mahmut, Menictas, Stevenson, and Homewood (2011) and the 28 items developed by Carré, Hyde, Neumann, Viding, and Hariri (2012). These different versions of the SRP have shown good internal consistency (ranging from α = .69 to α = .90) and construct validity (Lester, Salekin, & Sellbom, 2013;Williams, Paulhus, & Hare, 2007).…”

Assessing the reliability and validity of the Self-Report Psychopathy Scales in a UK offender population

“…Earlier versions have been found to have validity as self-report measures of psychopathy. For example, the four factors of the SRP-II being significant predictors of external correlates relevant to psychopathy in a student population (Lester, Salekin, & Sellbom, 2013). Research with college students and community samples have found the Hare SRP scale to have good convergent and discriminate validity and a factor structure reflecting that of the PCL-R (Mahmut, Menictas, Stevenson, & Homewood, 2011;Neal & Sellbom, 2012).…”