More Similarities Than Differences: Comparison of Developmental Functions between Monolingual, Bilingual, and Non-Native Speaking Children and Adolescents in the Intelligence and Development Scales–2

Mean differences between monolingual, bilingual, and non-native speaking children and adolescents in developmental functions were investigated with the Intelligence and Development Scales–2. Differences were negligible for psychomotor skills, social-emotional competence, and attitude toward work, and small to medium for scholastic skills with the largest difference in Language Skills.