This meta-analysis examined concurrent associations between aggression, withdrawal, assertion, and prosocial behavior and each of positive and negative friendship quality across studies with 22,657 children and adolescents (M age = 11.71 years; 51.7% girls; 67.7% White). Studies were published between 1995 to 2021 and 32.4% were conducted outside of North America. Aggression was linked to more negative, r = .
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