Presents an alternative conceptual model of Reflection-Impulsivity. The alternative dimension delineates both a cognitive style and a cognitive efficiency dimension. A methodological alternative for use with the model is also presented. (BD)

Summarizes the theory of psychological differentiation and reviews recent cross-cultural research on the roles of child rearing, culture, and ecology in the development of individual, group, and sex differences in the field dependence-field independence cognitive style component of psychological differentiation. (SS)