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Hooper, Frank H.; And Others – 1974
A series of Piagetian concrete operations period tasks dealing with classificatory concepts was administered to 280 children (40 subjects from each of seven levels--preschool, kindergarten, and first, second, third, fourth, and sixth grades). Significant main effects for age were found for all the tasks. Few significant sex differences were…
Descriptors: Children, Classification, Cognitive Ability, Concept Formation
Sipple, Thomas S.; And Others – 1978
Matrix tasks designed to assess the logical properties of multiple classification and multiple seriation were administered to 105 first, third, and fifth grade children. The tasks included cross-class and double series matrices, each of which had a reproduction and a transposition instructional set, and a revised set of cross-class and double…
Descriptors: Classification, Cognitive Development, Cognitive Processes, Cross Sectional Studies