Cross-cultural adaptation, and factor structure of the decision styles scale for Brazil

The objective was to carry out the cross-cultural adaptation of the Decision Styles Scale (DSS) for Brazil. Translation and back-translation were carried out, evaluated by a committee of experts. DSS was answered by 1218 participants of both sexes (women = 816, 73.4%) aged between 18 and 64 (M = 26.68; SD = 8.32). A Multigroup Confirmatory Factor Analysis was performed, and items were analyzed by the Gradual Response Model of the Item Response Theory. Results indicated that the structure of two styles (rational and intuitive) shows excellent goodness-of-fit, showing high reliability and invariance of psychometric parameters as a function of gender. IRT indicated that items in the rational style require fewer latent traits than those in the intuitive style. These results indicated that DSS presents validity for assessing decision styles in the Brazilian context.