Descriptor
| Age | 1 |
| Attention Span | 1 |
| Cognitive Development | 1 |
| Developmental Psychology | 1 |
| Infant Behavior | 1 |
| Premature Infants | 1 |
| Sex Differences | 1 |
| Visual Stimuli | 1 |
Source
| Child Development | 1 |
Author
| Parmelee, Arthur H. | 1 |
| Sigman, Marian | 1 |
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Peer reviewedSigman, Marian; Parmelee, Arthur H. – Child Development, 1974
Descriptors: Age, Attention Span, Cognitive Development, Developmental Psychology
