Mothers, fathers, and 6- to 10-year-old children used the Family Cohesion Index to type their family system as cohesive (all close), separate (all distant), triangulated (cross-generational coalitions), or detouring (child excluded from the parental subsystem). Family members agreed modestly with one another. Multivariate analyses of variance showed that parents in triangulated families were higher in marital conflict and dissatisfaction than were cohesive and detouring parents. Children in triangulated families reported more interparental conflict and more negative affect in the family. Children in detouring families rated themselves higher in self-blame for their parents' conflicts, and their parents rated them highest in internalizing problems. Parents in separate families rated their children highest in externalizing problems. Implications for the integration of family systems perspectives with research on marriage and parenting are discussed.