Conflict resolutions that do not accord with parents' positions display children's power to influence both the conduct of conflict and the principles families use in conflict resolution. Forty two-parent, two-child families were observed in their homes during three 90-minute sessions in which the children and parents were in separate areas of the house. In each of the families, one child was 2.5 years old and the other was 4 to 5 years old. Observers recorded sibling interactions and parental interventions in sibling disputes, noting issues raised by children in the disputes and principles followed or violated in the parents' response. In the conflicts that were observed, nearly 4,000 issues were raised by the children involved. Parent interventions addressed 45 percent of these issues, solving the conflicts according to the parents' positions 72 percent of the time. Thus, in 28 percent of parent interventions, conflict outcomes were discordant with parental positions. Analysis of child reactions to these outcomes found that children were more likely to have reacted emotionally, and to have refused, defied, and argued with their parents more when outcomes were discordant with interventions than when the two were in accord. (MDM)