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Dean, Anne L.; Deist, Steven – Child Development, 1980
The processes by which children construct images of anticipated end states of a transposition movement were examined on two tasks. Results support Piaget's (1977) hypothesis that reasoning on the basis of state correspondence defines a developmental level which precedes the development of transformational thought. (Author/MP)
Descriptors: Children, Cognitive Processes, Conservation (Concept), Imagery
Peer reviewed Peer reviewed
Dean, Anne L.; Harvey, Wade O. – Developmental Psychology, 1979
Children at three age levels (4-6, 7-9, and 10-14 years) performed a reaction-time version of Piaget and Inhelder's rotating squares imagery task and a pivot and shape conservation recognition task. (JMB)
Descriptors: Age Differences, Children, Conservation (Concept), Geometric Concepts
Peer reviewed Peer reviewed
Dean, Anne L. – International Journal of Behavioral Development, 1979
Examines the imaging processes that children at different operatory levels use on a spatial rotation task. Subjects were 80 elementary school girls ranged in age from 5 to 10.2 years. (MP)
Descriptors: Cognitive Processes, Concept Formation, Conservation (Concept), Elementary Education
Peer reviewed Peer reviewed
Dean, Anne L.; Scherzer, Elise – Journal of Experimental Child Psychology, 1982
Examines the hypothesis that errors in children's drawings of objects in anticipated states of rotation result from their inability to imagine the objects in those states. The hypothesis was tested by comparing children's performances on a drawing version and a reaction-time version of a rotating squares task. (Author/RH)
Descriptors: Cognitive Ability, Conservation (Concept), Elementary School Students, Error Analysis (Language)