Abstract

The study examined the effect of self-differentiation on relational aggression, and the serial multiple mediation effects of antagonism and moral foundations between them. Based on the data obtained from 320 people in their 20s to 50s, multiple regression analyses showed that the level of self-differentiation, antagonism, and moral foundations had all significant effects on relational aggression. The mediation effect of antagonism was significant between self-differentiation and relational aggression, which means that the lower the self-differentiation, the higher the antagonism, and the higher the relational aggression. In addition, the mediation effect of binding foundations was significant, such that the lower the self-differentiation, the stronger the binding foundations, and the higher the relational aggression. The serial multiple mediation effects of antagonism and binding foundations were significant between self-differentiation and relational aggression. The higher the level of self-differentiation, the lower the level of antagonism, the stronger the level of binding foundations, and the higher the level of relational aggression. Based on the results, the implications of the study on preventing relational aggression were discussed.