This study evaluates the psychometric properties of four models of the Strengths and Difficulties Questionnaire (SDQ) in a sample of 1470 children and adolescents from Biblián, Ecuador. The instrument has been used by researchers and students. However, there are not reports that show that the instrument is valid or reliable in the Ecuadorian context. | Psychometric properties of the self-report version of the strengths and difficulties questionnaire in the Ecuadorian context: An evaluation of four models
