Sibling differences in family processes and individual adjustment were examined for 133 sibling pairs (10–18 years old) in divorced families. Although all siblings differed, siblings who lived apart after their parents' divorce differed more than siblings who lived together, contradicting past research that found negligible effects of shared environment on sibling similarities. The possibility that siblings might live apart because they were initially more different was considered. This hypothesis was not supported in the limited tests permitted by the data. Differences in family processes were associated with differences in adjustment for pairs who lived together as well as pairs who lived apart.
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Monahan et al. (1993) studied this question.
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