Although cyber victimization has been suggested as a significant risk factor for the development of adolescents' depression, the underlying psychopathological process that mediates this relationship needs further exploration. Based on the psychological inflexibility model, this study aimed to examine cognitive fusion and experiential avoidance as serial mediators in the relation between cyber victimization and depression. A total of 556 Chinese adolescents completed a set of online self-report questionnaires measuring cyber victimization, cognitive fusion, experiential avoidance, and depressio...