Determining the factor structure of the Psychopathy Checklist: A converging approach
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Templeman, R., Wong, S. (1994). Determining the Factor Structure of the Psychopathy Checklist: A Converging Approach. Multivariate Experimental Clinical Research, 10(3), 157-166.
Three statistical and six psychometric methods were used to obtain converging validation of the correct number of factors to extract in the Psychopathy Checklist. A two-factor solution was obtained reflecting, respectively, criminal/anti-social behaviors and salient personality characteristics of the psychopath. The present results support the two- factor interpretation proposed by Templeman and Wong (1987) and Harpur, Hakstian, and Hare (1988). Earlier factor analytic studies which suggest a five to seven-factor solution are probably the result of an overextraction of factors. A converging approach in determining the correct number of factors to retain is strongly encouraged.