Finds a direct relationship between overinclusion and field dependence. Sees sex differences in "Epstein's Overinclusion Test." Notes that a direct relation exists between two tests of retardedness and both overinclusion and field dependence, suggesting that these two concepts may be part of a larger, more comprehensive construct. (RL)

This paper discusses research exploring the performance factors involved in studies which test for formal operations. It is suggested that several previous studies dealing with formal operations confound performance and competence in determining the extent of subjects' formal operations schemata. Factors which might account for performance…

The Conceptual Learning and Development (CLD) Model specifies four levels of concept attainment (concrete, identity, classificatory, and formal) and three uses of concepts (problem solving, subordinate-supraordinate, and principles). Longitudinal and cross-sectional studies of concept attainment may be conducted. The results of this study of 300…