Descriptor
| Behavior Development | 3 |
| Longitudinal Studies | 3 |
| Twins | 3 |
| Age Differences | 1 |
| Behavior Patterns | 1 |
| Birth Order | 1 |
| Body Weight | 1 |
| Child Development | 1 |
| Emotional Development | 1 |
| Genetics | 1 |
| Interpersonal Competence | 1 |
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| Child Development | 3 |
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| Journal Articles | 2 |
| Reports - Research | 2 |
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Peer reviewedMatheny, Adam P., Jr.; Brown, Anne M. – Child Development, 1971
Descriptors: Behavior Development, Behavior Patterns, Birth Order, Body Weight
Peer reviewedGoldsmith, H. H.; Gottesman, I. I. – Child Development, 1981
Descriptors: Age Differences, Behavior Development, Genetics, Longitudinal Studies
Peer reviewedMatheny, Adam P., Jr.; And Others – Child Development, 1981
Mothers were interviewed periodically over the first six years of their same-sex twins' lives and were asked to contrast them on specific behaviors. Intrapair contrasts were moderately stable across age spans for as long as 18 through 36 months. Genotypic similarity was apparently associated with intrapair similarity in emotionality and…
Descriptors: Behavior Development, Child Development, Emotional Development, Interpersonal Competence
