Title: Psychometric Properties and Measurement Invariance of the Youth Psychopathic Traits Inventory - Short Version among Portuguese Youth
Authors: Pechorro, Pedro 
da Silva, Diana Ribeiro 
Rijo, Daniel 
Gonçalves, Rui Abrunhosa 
Andershed, Henrik 
Keywords: Assessment;Measurement invariance;Youth psychopathic traits inventory - short Validation
Issue Date: 21-Mar-2017
Abstract: This study aimed to examine the psychometric properties of the Youth Psychopathic Traits Inventory - Short version (YPI-S) among a mixed-gender sample of 782 Portuguese youth (M=15.87 years; SD=1.72) collected in a school context. Confirmatory factor analysis offered support for the expected 3-factor structure. Partial cross-gender measurement invariance and cross-sample measurement invariance of the YPI-S using a forensic sample of institutionalized males was established. The Portuguese version of the YPI-S showed adequate psychometric properties in terms of internal consistency, mean inter-item correlation, corrected item-total correlation, convergent validity, and discriminant validity. In support for criterion-related validity, the YPI-S also showed statistically significant associations with self-reported conduct disorder symptoms, alcohol abuse, and drug use. In terms of known-groups validity, males from the school sample scored lower than males from the forensic sample and higher than females from the school sample. The YPI-S seems to be a valuable brief and psychometrically reliable and valid self-report measure, which can be used to assess psychopathic traits in diverse samples of youth.
URI: http://hdl.handle.net/10316/46638
DOI: 10.1007/s10862-017-9597-7
Rights: openAccess
Appears in Collections:FPCEUC - Artigos em Revistas Internacionais

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