The triarchic model of psychopathy among incarcerated male youths

A psychometric study

Authored by: Pedro Pechorro , Matt DeLisi , Isabel Alberto , James V. Ray , Mário R. Simões

Routledge International Handbook of Psychopathy and Crime

Print publication date:  August  2018
Online publication date:  August  2018

Print ISBN: 9781138085169
eBook ISBN: 9781315111476
Adobe ISBN:

10.4324/9781315111476-17

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Abstract

The Triarchic Psychopathy Model characterizes psychopathy in terms of varying configurations of three phenotypic tendencies: Boldness, disinhibition, and Meanness. This present study aimed to examine the psychometric properties of the Triarchic Psychopathy Model based on the Youth Psychopathic Traits Inventory (YPI–Tri) among a forensic sample (N = 221) of incarcerated male youths (M = 16.75 years, SD = 1.41). Problematic items (e.g., with low loadings, low item–total correlations) were excluded, leading to the creation of a reduced form of the measure (YPI–Tri–S) with seven items per dimension. Confirmatory factor analysis offered subsequent support for the refined three-factor structure. The short measure of the Triarchic Psychopathy Model showed adequate psychometric properties in terms of internal consistency, convergent validity, discriminant validity, and criterion-related validity. The psychometric results obtained suggest the YPI–Tri–S is a valid and reliable self-report measure of the Triarchic Psychopathy Model which can be used to assess psychopathic traits in justice-involved youths.

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