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Virtual twins: New findings on within-family environmental influences on intelligence. |
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| Authors: | Segal Nancy L |
| Abstract: | Virtual twins are unrelated siblings of the same age who are reared together from early infancy (UST-SA). These unique sibling pairs, which replay twinship but without genetic relatedness, yield a new research design for assessing shared environmental influences on behavior. The IQ intraclass correlation of .26 (p? |
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