This study investigated psychological background for self-recognition need (Kamise, 1992) and actions of seeking information about the self. Two surveys were conducted and 960 young adults participated in total (655 participants for the first survey and 305 for the second). The results of the first survey showed that the confusion of ego-identity gave rise to the instability of self concept and invoked self -recognition need. The results of the second survey showed that the interdependent construal of self preceded the instability of self concept and was related to the arousal of self-recognition need. In addition, after their self-recognition need being raised, the participants initiated actions of seeking self-information. Moreover, both the interdependent construal of self and the tendency of dependence on others in decision making were related to the action of seeking information about self.