Sibling differences in problem behavior and parental treatment in nondivorced and remarried families.

This article examines within-family differences in parenting and problem behavior in nondivorced and remarried families, with a specific focus on whether sibling differences are magnified and whether the links between differential treatment and sibling adjustment are stronger in remarried families. Multimethod assessments of parenting and problem behavior were done on 516 families with 2 same-sex adolescent siblings. The remarried families included those in which one or neither sibling was the mother's stepchild and one or both siblings were the father's stepchildren. Within-family differences in parenting and problem behavior were greatest in remarried families where siblings did not share the same biological parent. Differential treatment was also more strongly related to problem behavior in this family context, with the mother's biological child and father's stepchild at greater risk. Results are discussed in terms of the differing experiences of biological children and stepchildren in remarried households.