An investigation of adult reasoning processes revealed that the more relevant the cognitive task was to the developmental task of the learner, the better the performance was likely to be. (JD)

Discusses difficulties of examining Jean Piaget's work, caused in part by his own revisions and earlier, inadequate interpretation in English translation. Examines common misunderstandings of Piagetian developmental stages and similar misinterpretations of his ideas on education. Focuses on importance of other disciplines, including psychology and…

Reports research on teachers' beliefs about children's development. Discusses (1) teachers' estimates of ages at which children succeed on tasks, (2) teachers' ability to engage in task analysis, (3) their view of children's error, and (4) their view of developmental accounts. Concludes that good teachers' beliefs provide an inadequate basis for…

Piaget's model of children's conceptual learning and development was compared with Klausmeier's Conceptual Learning and Development (CLD) model in a longitudinal study. The CLD model suggests four successive levels of concept learning: (1) concrete--recognizing an object which has been encountered previously; (2) identity--recognizing a known…

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…