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Psychological Reports | 2 |
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Penk, Walter E. – Psychological Reports, 1971
Descriptors: Abstract Reasoning, Age Differences, Behavior Patterns, Child Development

Jasperse, Coby S.; Hekken, Suus M. J. V. – Psychological Reports, 1971
Descriptors: Behavior Patterns, Behavioral Science Research, Cognitive Development, Cognitive Processes