Sibling conflict can rise to the level of a clinical problem. In Phase 1 a lengthy behavioral role-play analog sampling child reactions to normal sibling conflicts was successfully shortened. In Phase 2 normal children who lacked sibling conflict resolution skills were randomly assigned to a Training or Measurement Only condition. Training consisted of five clinic sessions focusing on verbal reasoning, assertiveness, and acceptance skills. Trained children outperformed Measurement Only children on the shortened role-play test. Parents of trained children, but not untrained children, perceived improved social competence in the home. The project provides an empirical foundation for future research with aggressive siblings.
