In this study, participants (229 students) responded to a questionnaire on how they express and are expressed anger. Results indicated that the anger expression caused by “broken promise and betrayal” occurred more often in the intimate relationship than in the estranged relationship. It was also suggested that the anger expression caused by “broken promise and betrayal” tended to be evaluated more justifiable, and had more positive interpersonal effects. Therefore, it could be said that the prior promise has important implication for the social function of anger expression.
