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ABRAMOVITCH, RONA; CORTER, CARL; PEPLER, DEBRA J.; and STANHOPE, LINDA. Sibling and Peer Interaction: A Final Follow-up and a Comparison. CHILD DEVELOPMENT, 1986, 57, 217-229. In a second follow-up study of sibling interaction, 24 pairs of same-sex siblings and 24 pairs of mixed-sex siblings were observed in their homes 18 months after the first follow-up and 3 years after the initial observations. The younger siblings were approximately 5 years old, and the age interval between siblings was either large (2.5-4 years) or small (1-2 years). The patterning of interaction was similar to that observed earlier. Birth order was important. There was no effect of age interval between siblings and few effects of sex of child or sex composition of the dyad. Sibling observations were supplemented by naturalistic observations of dyadic peer interaction for 19 of the same-sex dyads. There was no consistent pattern of correlations between interactions with siblings and with peers. Interaction in almost all dyads was characterized by reciprocity. The results are discussed in terms of the nature and importance of early sibling relationships.
Abramovitch et al. (Sat,) studied this question.