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WINNE, PHILIP H.; MARX, RONALD W.; and TAYLOR, TERRY D. A Multitrait-Multimethod Study of Three Self-Concept Inventories. CHILD DEVELOPMENT, 1977, 48, 893-901. A program of construct validity research is needed to clarify past self-concept research and to provide a stronger foundation for future research. A multimethod-multitrait study was done in which facets of self-concept defined by subscale labels in 3 self-concept instruments' manuals are compared. 61 boys and 42 girls in the third through sixth grades were given the Sears Self-Concept Inventory, the Gordon How I See Myself Scale, and the Piers-Harris Children's Self-Concept Scale. Results are discussed in terms of a nomological network of self-concept and its implications for basic research and program evaluation.
Winne et al. (Thu,) studied this question.