Descriptor
| Heredity | 1 |
| Hyperactivity | 1 |
| Physical Activity Level | 1 |
| Questionnaires | 1 |
| Tables (Data) | 1 |
| Twins | 1 |
Source
| Child Development | 1 |
Author
| Willerman, Lee | 1 |
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Peer reviewedWillerman, Lee – Child Development, 1973
Results indicate a significant genetic component for activity level in twins rivaling that found for intelligence. (Author)
Descriptors: Heredity, Hyperactivity, Physical Activity Level, Questionnaires
