Next Article in Journal
Risk Assessment for Children Exposed to Beach Sands Impacted by Oil Spill Chemicals
Next Article in Special Issue
Psychometric Properties and Clinical Usefulness of the Youth Self-Report DSM-Oriented Scales: A Field Study among Detained Male Adolescents
Previous Article in Journal
Tempo-Spatial Variations of Ambient Ozone-Mortality Associations in the USA: Results from the NMMAPS Data
Previous Article in Special Issue
Childhood Reports of Food Neglect and Impulse Control Problems and Violence in Adulthood
Article Menu

Export Article

Open AccessArticle
Int. J. Environ. Res. Public Health 2016, 13(9), 852;

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

School of Psychology, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal
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
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)
PDF [329 KB, uploaded 26 August 2016]


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).

Share & Cite This Article

MDPI and ACS Style

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.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Int. J. Environ. Res. Public Health EISSN 1660-4601 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top