The Mechanism of Family Functioning Influencing Adolescents’ Prosocial Behavior: The Mediating Roles of Belief in a Just Word and Interpersonal Trust

Abstract

This study examines the mediating mechanisms linking family functioning to prosocial behavior, focusing specifically on the roles of belief in a just world (BJW) and interpersonal trust (IT). Given the importance of prosocial behavior for social integration and mental health, and the established influence of family systems, understanding the underlying pathways is crucial. The study employed a cross-sectional design with 625 Chinese university students. Participants completed standardized questionnaires measuring family functioning, BJW, IT, and prosocial tendencies. Data analysis utilized correlation analysis and Hayes’ PROCESS macro for mediation testing (Model 6, 5000 bootstraps). Results confirmed a significant positive relationship between family functioning and prosocial behavior. Crucially, both BJW and IT served as significant individual mediators. Furthermore, a significant chain mediation pathway was identified: family functioning enhanced BJW, which subsequently increased IT, ultimately leading to higher levels of prosocial behavior. These findings illuminate the complex cognitive processes through which family environments foster prosocial development, highlighting the sequential roles of world-justice beliefs and interpersonal trust. This research provides valuable insights for designing familyfocused interventions and educational programs aimed at promoting adolescent social adaptation.