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| Classification | 2 |
| Cognitive Processes | 2 |
| Adult Development | 1 |
| Adults | 1 |
| Age Differences | 1 |
| Cognitive Development | 1 |
| Cognitive Measurement | 1 |
| Definitions | 1 |
| Developmental Psychology | 1 |
| Learning | 1 |
| Older Adults | 1 |
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| Human Development | 2 |
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Peer reviewedBart, W. M.; Smith, M. B. – Human Development, 1974
A precise formulation of both cognitive structure and its related theory is provided through use of the mathematical theory of categories. Weaknesses and imprecision in cognitive theory are identified. Using category theory, cognitive structure and related Piagetian theoretic terms are precisely defined and some interrelationships are discussed.…
Descriptors: Classification, Cognitive Development, Cognitive Processes, Definitions
Peer reviewedSinnott, J. D. – Human Development, 1975
Formal and familiar materials were used to test Piagetian classification and formal operational abilities in two groups of educated adults: one group aged 30-38 and the other aged 57-82 years. Subjects did not show mastery of the tasks. Results suggest a new model of cognitive lifespan development. (Author/MS)
Descriptors: Adult Development, Adults, Age Differences, Classification
