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  • Title: Factor structure and clinical utility of the Youth Psychopathic Traits Inventory in an inpatient sample.
    Author: Muñoz CG, Abate A, Sharp C, Venta AC.
    Journal: Psychiatry Res; 2019 May; 275():189-195. PubMed ID: 30925306.
    Abstract:
    Previous research on the Youth Psychopathic Traits Inventory (YPI; Andershed et al., 2002) has identified a three-factor structure: Interpersonal, Affective, and Behavioral. The present study sought to test this three-factor structure and broader psychometric properties of the YPI in a sample of 328 adolescents undergoing inpatient psychiatric care. Confirmatory factor analyses were used to test the hypothesized three-factor structure of the YPI previously documented in community samples. Exploratory analyses reported on modification indices, gender invariance, and fit of a bifactor model. Additionally, the clinical utility of the YPI was examined by examined the relation between the YPI and the antisocial personality scale of the Personality Assessment Inventory (PAI-A-ANT; Morey, 2007). Confirmatory Factor Analysis results did not replicate the previously documented three-factor structure in the inpatient sample; a bifactor model continued to display poor (albeit improved) fit. Still, there was a strong association between the YPI (total and factor scores) and PAI-A-ANT, as such the YPI accurately identified adolescents with clinically significant antisocial traits. A cut-off score is presented for the YPI total score.
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