Validating a Four-Factor Model of Psychopathic Personality from the Triarchic Psychopathy Measure (TriPM) Across Community and Incarcerated Samples

The Triarchic Psychopathy Measure (TriPM) is based on a three-dimensional conceptual model, though structural analyses of the TriPM items indicate that they do not reflect this conceptual model. In contrast, studies have shown that multiple factors are required to account for all the TriPM items in community and incarcerated samples. More problematic is that some of these factors are outside of the nomological network of psychopathy. In contrast, there are empirically robust findings supporting the four-factor model of psychopathy, irrespective of sample type, assessment method, or item set. For the current study, a structural equation modeling approach was utilized with incarcerated and community samples to demonstrate that theoretically relevant candidate items from the TriPM could be employed to represent the four-factor model of psychopathy (i.e., four-factor proxy measure-4FPM). Multiple group confirmatory factor analysis of the 4FPM items provided evidence of strong (scalar) invariance across community and incarcerated samples. Finally, associations with external correlates and other psychopathy scales highlighted that the 4FPM can be utilized to represent the four-factor model of psychopathy.