Results suggested that preschool age siblings may facilitate mastery of the object environment by infants. (Author/JMB)

Subjects were eight first-graders with older siblings, half from 2-child families and half from larger families. The four sex combinations of sibling pairs were equally represented. Half the children were aided on the task by their mother; half were aided by their sibling. Comparisons were made by sex and family size. nAuthor/JH)

Effective family problem solving was studied in 97 families of elementary-school-aged children with definite- and indefinite-solution tasks. Incentive and task independence were manipulated. It was found that definitions of effective problem solving based on directly observed measures of group interaction were more valid than definitions based on…

Developed a model of individuation in family relationships focused on communicative processes. Expressions of four dimensions of the model (self-esteem, separateness, permeability, and mutuality) were predicted to be positively associated with identity exploration in adolescents. Analysis of observations of families in a Family Interaction Task…