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Concept Formation2
Data Analysis2
Learning Theories2
Age Differences1
Cognitive Development1
Conservation (Concept)1
Error Patterns1
Infants1
Measurement Techniques1
Number Concepts1
Preschool Children1
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Child Development2
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Evans, Wilson1
Gratch, Gerald1
Pufall, Peter B.1
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The Stage IV Error in Piaget's Theory of Object Concept Development: Difficulties in Object Conceptualization or Spatial Localization?
Peer reviewed Peer reviewed
Evans, Wilson; Gratch, Gerald – Child Development, 1972
Results do not support Piaget's explanation of object conceptualization. (MB)
Descriptors: Concept Formation, Data Analysis, Error Patterns, Infants
Development of Number Conservation: An Examination of Some Predictions from Piaget's Stage Analysis and Equilibration Model
Peer reviewed Peer reviewed
Pufall, Peter B.; And Others – Child Development, 1973
Study tests four predictions derived from Piaget's cognitive theory. (CB)
Descriptors: Age Differences, Cognitive Development, Concept Formation, Conservation (Concept)