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Klausmeier, Herbert J.; Sipple, Thomas S. – Contemporary Educational Psychology, 1982
The Piagetian developmental stage of concrete operational thought and the theoretical groupement structures underlying children's performance of 12 concrete operations tasks are discussed. Tasks were shown to develop in five related sets. Three factor structures were found in this longitudinal study. (Author/CM)
Descriptors: Cognitive Processes, Developmental Stages, Elementary Education, Factor Structure