Presents an overview of Pascual-Leone's Theory of Constructive Operators and discusses its implications for issues in developmental psychology. The author concludes that the theory may resolve several anomalies in cognitive- developmental and learning theory approaches to development. One potential problem, the objectivity of task analysis, is…

Discusses many factors involved in determining the complex nature of a child's knowledge base. Includes three kinds of considerations: 1) task-oriented criteria; 2) motivational elements; and 3) the relationship between personality and performance. (Author/CS)