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Area of Science:

  • Psychology
  • Developmental Psychology
  • Adolescent Psychology

Background:

  • Sibling relational aggression is an understudied aspect of sibling relationships.
  • Sibling dynamics significantly impact adolescent adjustment.
  • Longitudinal research is needed to understand these effects.

Purpose of the Study:

  • To examine longitudinal associations between sibling relational aggression and adolescent adjustment.
  • To investigate moderating roles of birth order, sibling gender, and dyad gender.
  • To understand the impact on depressive symptoms, risky behavior, self-worth, and romantic competence.

Main Methods:

  • Longitudinal study over three years with 196 European American sibling pairs.
  • Data collected via separate home interviews with each sibling.
  • Multilevel models used to analyze associations and moderation effects.

Main Results:

  • Targeting of sibling relational aggression linked to all four adjustment outcomes at the between-person level.
  • Effects on risky behavior and romantic competence found at the within-person level.
  • Some associations were moderated by sibling dyad characteristics.

Conclusions:

  • Sibling relational aggression is a significant factor in adolescent adjustment.
  • Sibling relationship dynamics play a crucial role in youth development.
  • Further research should consider these dynamics in adolescent well-being.