Abstract：Abstract: The purpose of the present study is to examine the influence of the relationship identity of “important others” and the types of discursive strategies used by “important others” when they disagreed with their relationship partners. Specifically, the “talk-in-interaction” between 9 dyads were collected and then analyzed. Results indicate that “important others” did not tend to employ their relationship identity to change their relationship partners’ attitude, but used more low-controlling language and fewer high-controlling language as well as indirect disagreement strategy. Findings also show that relative to direct disagreement strategy, the use of indirect disagreement strategy resulted in unsuccessful influence attempts. Furthermore, results demonstrate the theoretical and applied value of conversation analysis in effectively exploring the actual practices of doing disagreement displayed by “important others”. Key words: conversation analysis; theory of planned behavior; important others; psychological reactance theory; discursive strategies of doing disagreement
