title: The Factor Structure and Construct Validity of the Short Version of the Youth Psychopathic Traits Inventory in Two Independent Samples of Nonreferred Adolescents.
abstract: To assess the internal consistency, factor structure, and construct validity of the Italian translation of the Youth Psychopathic Traits Inventory-Short Version (YPI-S), both the YPI-S and its full version, the YPI, as well as self-reports of delinquency, aggression, and Big Five domains, were administered to two independent samples (N = 868 and N = 881) of Italian community, nonreferred adolescents. The internal consistency of the YPI-S was adequate, and confirmatory factor analyses showed a good fit of the theoretical three-factor model of the YPI-S in both samples. Hierarchical regression models suggested the same pattern of associations with self-report measures of delinquency and aggression for the YPI-S and YPI, although the YPI was a better predictor of Big Five domains than the YPI-S. The findings support the internal consistency, factor validity, and construct validity of the YPI-S.
authors.affiliation: LUMSA University, Rome, Italy fossati.andrea@hsr.it.|San Raffaele Hospital, Milan, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Fossati
authors.affiliation: LUMSA University, Rome, Italy.|San Raffaele Hospital, Milan, Italy.
authors.forename: Antonella
authors.initials: A
authors.lastname: Somma
authors.affiliation: San Raffaele Hospital, Milan, Italy.|Vita-Salute San Raffaele University, Milan, Italy.
authors.forename: Serena
authors.initials: S
authors.lastname: Borroni
authors.affiliation: San Raffaele Hospital, Milan, Italy.|Vita-Salute San Raffaele University, Milan, Italy.
authors.forename: Fernanda
authors.initials: F
authors.lastname: Frera
authors.affiliation: San Raffaele Hospital, Milan, Italy.|Vita-Salute San Raffaele University, Milan, Italy.
authors.forename: Cesare
authors.initials: C
authors.lastname: Maffei
authors.affiliation: Örebro University, Örebro, Sweden.
authors.forename: Henrik
authors.initials: H
authors.lastname: Andershed
mesh_terms: D000293:Adolescent; D000296:Adolescent Psychiatry; D000374:Aggression; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D007558:Italy; D007604:Juvenile Delinquency / Q000523:psychology; D008297:Male; D010555:Personality Inventory; D057566:Self Report; D011795:Surveys and Questionnaires
keywords: adolescence; factor structure; psychopathy; validity