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Peer reviewed Peer reviewed
Penk, Walter E. – Psychological Reports, 1971
Descriptors: Abstract Reasoning, Age Differences, Behavior Patterns, Child Development
Peer reviewed Peer reviewed
Jasperse, Coby S.; Hekken, Suus M. J. V. – Psychological Reports, 1971
Descriptors: Behavior Patterns, Behavioral Science Research, Cognitive Development, Cognitive Processes