Reform in science and mathematics has moved from rote learning of facts and computation skills toward the learning of a structure of a subject matter. At present there is little empirical evidence to support any contentions that there is a match between the subject-structure taught and the cognition in subjects' memories resulting from the…

The aims of this paper are to affirm the importance of developing sequential models of psychological process-particularly of such complex psychological phenomena of prime concern to theory and application as learning, problem solving, and creativity-and to argue that factor analysis has delineated component processes for these sequential models.…

This book is a collection of papers presented at the symposium, "Conference on Ordinal Scales of Cognitive Development, sponsored by the California Test Bureau. Papers include: "The Theory of Stages in Cognitive Development" (J. Piaget); "Two Approaches to Intelligence: Piagetian and Psychometric" (D. Elkind); "An…