The unique perspective of Richard E. Snow, in recent years one of the most distinguished educational psychologists, integrates psychology of individual differences, cognitive psychology, and motivational psychology. This capstone book pulls together the findings of his own 35 years of research on aptitudes and those from (especially) European scholars, of which he had exceptional knowledge. A panel of experts and former associates completed this book after his death in 1997, expanding his notes on implications of the theory for instructional design and teaching practice. The panel developed...