ABSTRACT
Abstract Aim The Social Competence and Behavior Evaluation Scale (SCBE-30) is a 30-item questionnaire designed to assess preschoolers' behavioral problems (externalizing and internalizing) and social competence. It is widely used in the developmental research. This study aims to contribute to the adaptation and validation of the Portuguese version of the teachers' short form of the SCBE-30 (Psychol. Assess. 8:369777, 1996). Method Participants were 361 children from 3 to 6 years old whose preschool teachers completed the SCBE-30. For external validation purposes children completed arithmetic and theory of mind tasks, and parents completed a socio-demographic questionnaire. Results Confirmatory factor analysis did not confirm the 10-item-subscale solution of the original SCBE-30 version. Instead, a five-item-subscale was found as a better solution. Discussion The reduced 15-item version replicates the three-factor structure, shows good psychometric properties and meets external validation criteria. Further research should focus on the invariance of the factor structure of the SCBE-30 between cultures. (AU)