1. (1977). A comparative laboratory study of the effects of two teaching strategies on sixth grade students' attitudes and self-Concepts in science. Dissertation Abstracts International, 38, 2023—A.
2. , & (1967). Self-Concept of ability and school achievement-Ill. East Lansing, MI: Cooperative Research Project No. 2831, Michigan State University.
3. Self-Concept of Ability and School Achievement