Investigates the factor structure of five self-concept scales from a hierarchical, multidimensional theoretical model. The scales were administered to 221 students in grades 5 through 8. Each scale yielded strong general factors and six dominant factors that coincide with the proposed theoretical model, which reflects social, affect, competence, academic, family, and physical self-concepts. (Contains 32 references, 4 tables, and an appendix.) (Author/GCP)