Intergenerational solidarity and intragenerational relations between adult siblings.

Few studies have yet investigated how intergenerational solidarity between parents and adult children is associated with intragenerational relations between siblings. Theoretically, one might expect compensation between inter- and intragenerational relationship solidarity as well as spillover effects from parent-child solidarity to sibling solidarity. Using data from the German Family Panel (pairfam), this study analyzes 5410 interviews with young adults who provided detailed information on the relationships to their parents and up to four siblings. Focusing on four dimensions of relationships in families (contact, emotional closeness, intimacy, and conflict), hierarchical linear regression results provide general support for the assumption that inter- and intragenerational relations reinforce each other. We also find evidence for the existence of partially compensating relationships: more frequent intergenerational conflicts, for example, not only predict more frequent conflicts between siblings, but also greater intimacy. The results are in line with predictions derived from family systems theory as well as social learning and attachment theories.