Firstborns were characterized by higher IQ scores than later borns; family size was not related to measures used. A Birth Order X Family Size interaction was found for a measure of scholastic aptitude and measures of scholastic achievement. Interaction was a function of differentiation between firstborns and later borns with increasing family…

Investigation combined two heretofore unconnected research areas: the newly structured operation of divergent thinking and the older domain of family resemblances. (Author)

Examines, in 339 ninth- and tenth-grade adolescents, the effect of the sibling relationship "having an older brother" on the younger sibling's stage of drug use, exploring sex differences in sibling effects. Sibling effects were examined in the context of the younger sibling's peer group. (Author/RH)

Behaviors observed in 47 families interacting at home were recorded in terms of interactions between a target child and other family members. The types of behaviors emitted by a target child to parents versus siblings were analyzed as were the types of responses that parents versus siblings gave to the target child's behavior. (Author/RH)

The CHILD-to-Child program is based on the recognition that older siblings often influence their younger family members. Activities of the CHILD-to-Child Program in Ajoya, Sinaloa, Mexico, relating to teaching about diarrhea and breast-feeding, are described. (CJ)

Describes adjustments in speech patterns made by two- and three-year-olds when talking to their 14-month-old siblings and compares these changes with those made by mothers addressing their babies. Individual differences between the children indicate two types of influence on the adjustments made--pragmatic and emotional. (EKN)

Based on a study which controlled for the effects of age, sex, maritial disruption, socioeconomic status, race, and other potentially confounding variables, this article explores the theoretical validity of the confluence model in explaining the effects of sibship size and birth order on intelligence. (Author/GC)

Schizophrenics were differentiated from their siblings in tendencies to see themselves as symbiotically attached to their mothers and failing to be accommodated to by their fathers. Schizophrenics tend to be aligned with the same sex parent. Findings may help explain the psychosexual identification difficulties of schizophrenics. (Author)

Evaluated the importance of social comparison processes in sibling and peer interaction. Experiment I assessed the influence of social comparison on male children during mother-sibling interaction and subsequent peer interaction. Experiment II assessed the influence of social comparison during peer interaction on female children's subsequent…

The Allred Interaction Analysis is an instrument, designed from theory and research, that codifies communication. It gives researchers a tool for assessing interaction in dyadic relationships and a cognitive map for analyzing their verbal communication. Preliminary evidence indicates this vehicle is a useful means for promoting change. (Author)

The author describes the strong, ambivalent bonds between siblings and reports on a study of the effects that social comparison exerts on brothers--effects that help to shape the individual's identity, adult roles, and peer relations. (Author)