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

Author

Listed:
  • Pedro Pechorro

    (School of Psychology, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal)

  • Diana Ribeiro da Silva

    (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)

  • Henrik Andershed

    (School of Law, Psychology and Social Work, Örebro University, Örebro 70182, Sweden)

  • Daniel Rijo

    (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)

  • Rui Abrunhosa Gonçalves

    (School of Psychology, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal)

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.

Suggested Citation

  • Pedro Pechorro & Diana Ribeiro da Silva & Henrik Andershed & Daniel Rijo & Rui Abrunhosa Gonçalves, 2016. "The Youth Psychopathic Traits Inventory: Measurement Invariance and Psychometric Properties among Portuguese Youths," IJERPH, MDPI, vol. 13(9), pages 1-16, August.
    • Handle: RePEc:gam:jijerp:v:13:y:2016:i:9:p:852-:d:76824
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    References listed on IDEAS

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    1. William Revelle & Richard Zinbarg, 2009. "Coefficients Alpha, Beta, Omega, and the glb: Comments on Sijtsma," Psychometrika, Springer;The Psychometric Society, vol. 74(1), pages 145-154, March.
    2. Ribeiro da Silva, Diana & Rijo, Daniel & Salekin, Randall T., 2012. "Child and adolescent psychopathy: A state-of-the-art reflection on the construct and etiological theories," Journal of Criminal Justice, Elsevier, vol. 40(4), pages 269-277.
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