Descriptor
| Child Development | 2 |
| Difficulty Level | 2 |
| Intellectual Development | 2 |
| Age Differences | 1 |
| Attitude Change | 1 |
| Behavior Change | 1 |
| Behavior Patterns | 1 |
| Behavioral Science Research | 1 |
| Classification | 1 |
| Cognitive Development | 1 |
| Comprehension | 1 |
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Ahr, Paul R.; Youniss, James – Child Develop, 1970
Descriptors: Age Differences, Child Development, Classification, Comprehension
Peer reviewedArkes, Hal R.; Boykin, A. Wade – Perceptual and Motor Skills, 1971
Descriptors: Attitude Change, Behavior Change, Behavior Patterns, Behavioral Science Research
