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Gelman, Rochel – J Exp Child Psychol, 1969
Based on author's PhD dissertation, University of California, Los Angeles (1967).
Descriptors: Attention Control, Cognitive Development, Concept Formation, Conservation (Concept)
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Gelman, Rochel – Child Development, 1972
Results are discussed in terms of why children of the same age fail to conserve number in the standard conservation task and how complex number concepts might develop. (Author)
Descriptors: Concept Formation, Conservation (Concept), Kindergarten Children, Logical Thinking