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Ackles, Patrick K.; Zimmermann, Robert R. – Perceptual and Motor Skills, 1978
Six groups of nursery schoolers, kindergarteners, and first graders balanced for sex were trained and tested on a series of discrimination learning and transposition problems. (Author)
Descriptors: Cognitive Development, Concept Formation, Developmental Stages, Discrimination Learning
Klausmeier, Herbert J.; And Others – 1976
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…
Descriptors: Abstract Reasoning, Classification, Cognitive Development, Cognitive Measurement