Physical aggression and sexual behavior among siblings: A retrospective study

Retrospective recall of physical aggression and sexual behavior among siblings was investigated. Participants described behaviors between themselves and siblings in the family, their estimation of the appropriateness of the behavior, and their current relationship with their siblings. Additionally, participants completed measures of family structure and stress. Results indicated that rates of physical aggression among siblings was high, with varying severity. Rates of sexual behavior were lower. For both physical and sexual behaviors, participants were more likely to believe that the behaviors were abusive in retrospect than when they actually occurred. No differences were found in family structure among abusive and nonabusive siblings, but siblings who reported physical or sexual behaviors also reported higher levels of intrafamilial stress. Certain types of stressors may predict particular sibling relationships.