The aim of this study was to examine gender differences in academic and non-academic self-concept. Childrens' self-perceptions were compared with the perceptions held by others (parents and teachers). The SDQ1 was presented to 428 children. Parents and teachers completed an adapted form. Results show that boys exhibited a higher self-concept than girls in almost all areas. Mothers, fathers and also teachers, gave the abilities of the boys in mathematics a higher rating, whereas mothers and teachers rated the verbal abilities of the girls somewhat higher. By using regression analyses, the hypothesis was confirmed that the general self-concept of girls is heavily dependent on the judgements of teachers and parents, but this was not found to be the case with boys.