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Int. J. Environ. Res. Public Health 2016, 13(9), 852; doi:10.3390/ijerph13090852

The Youth Psychopathic Traits Inventory: Measurement Invariance and Psychometric Properties among Portuguese Youths

1
School of Psychology, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal
2
Research Unit of the Cognitive-Behavioral Research and Intervention Center, Faculty of Psychology and Education Sciences, University of Coimbra, Rua do Colégio Novo, Coimbra 3001-802, Portugal
3
School of Law, Psychology and Social Work, Örebro University, Örebro 70182, Sweden
*
Author to whom correspondence should be addressed.
Academic Editor: Matt DeLisi
Received: 27 May 2016 / Revised: 5 August 2016 / Accepted: 22 August 2016 / Published: 26 August 2016
(This article belongs to the Special Issue Youth Psychology and Crime)
View Full-Text   |   Download PDF [329 KB, uploaded 26 August 2016]

Abstract

The aim of the present study was to examine the psychometric properties of the Youth Psychopathic Traits Inventory (YPI) among a mixed-gender sample of 782 Portuguese youth (M = 15.87 years; SD = 1.72), in a school context. Confirmatory factor analysis revealed the expected three-factor first-order structure. Cross-gender measurement invariance and cross-sample measurement invariance using a forensic sample of institutionalized males were also confirmed. The Portuguese version of the YPI demonstrated generally adequate psychometric properties of internal consistency, mean inter-item correlation, convergent validity, discriminant validity, and criterion-related validity of statistically significant associations with conduct disorder symptoms, alcohol abuse, drug use, and unprotected sex. In terms of known-groups validity, males scored higher than females, and males from the school sample scored lower than institutionalized males. The use of the YPI among the Portuguese male and female youth population is psychometrically justified, and it can be a useful measure to identify adolescents with high levels of psychopathic traits. View Full-Text
Keywords: adolescents; assessment; psychopathic traits; validation adolescents; assessment; psychopathic traits; validation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Pechorro, P.; Ribeiro da Silva, D.; Andershed, H.; Rijo, D.; Abrunhosa Gonçalves, R. The Youth Psychopathic Traits Inventory: Measurement Invariance and Psychometric Properties among Portuguese Youths. Int. J. Environ. Res. Public Health 2016, 13, 852.

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