title: Data concerning the psychometric properties of the Behavioral Inhibition/Behavioral Activation Scales for the Portuguese population.
abstract: The behavioral inhibition/behavioral activation (BIS/BAS) scales (Carver & White, 1994), which allow rating the Gray's motivational systems, were translated and adapted into Portuguese. In this study, the authors present the procedure and the psychometric analyses of the Portuguese version of the scales, which included basic item and scales psychometric characteristics, as well as confirmatory and exploratory factor analyses. After the psychometric analyses provided evidence for the quality of the Portuguese version of the scales, the normative data was provided by age and school grade. The confirmatory factor analysis of the BIS/BAS scales that the authors performed did not demonstrate satisfactory fit for the 2- or 4-factor solution. The authors also tested the more recent 5-factor model, but the fit indices remained inadequate. As fit indices were not satisfactory they proceeded with an exploratory factor analysis to examine the structure of the Portuguese scales. These psychometric analyses provided evidence of a successful translation of the original scales. Therefore these scales can now be used in future research with Portuguese or Brazilian population.
authors.affiliation: Laboratory of Neuropsychophysiology, Faculty of Psychology and Educational Sciences, University of Porto.
authors.forename: Diana
authors.initials: D
authors.lastname: Moreira
authors.affiliation: Social and Behavioral Sciences Department, Maia University Institute.
authors.forename: Fernando
authors.initials: F
authors.lastname: Almeida
authors.affiliation: Social and Behavioral Sciences Department, Maia University Institute.
authors.forename: Marta
authors.initials: M
authors.lastname: Pinto
authors.affiliation: Department of Basic and Clinical Psychology and Psychobiology, Universitat Jaume I.
authors.forename: Pilar
authors.initials: P
authors.lastname: Segarra
authors.affiliation: Laboratory of Neuropsychophysiology, Faculty of Psychology and Educational Sciences, University of Porto.
authors.forename: Fernando
authors.initials: F
authors.lastname: Barbosa
mesh_terms: D000328:Adult; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D007266:Inhibition, Psychological; D008297:Male; D009042:Motivation; D011174:Portugal; D011594:Psychometrics; D015203:Reproducibility of Results