This analysis of 12,266 responses to the 3 Self-Description Questionnaires (which measure dimensions of self-concept in preadolescence) examined age and sex effects during preadolescence and early adulthood and alternative operationalizations of the proposition that self-concept becomes more differentiated with age. Well-defined factor structures…

The purposes of the present investigation are to evaluate a new, adaptive procedure for assessing multiple dimensions of self-concept for children younger than 8 years and to examine related theoretical issues. The multidimensional, hierarchical structure of self-concept is well established for older children, but there is a paucity of research…