Abstract
This paper was intended to discuss on conflict management strategies in social consensus formation processes with reference to the findings about the mechanisms of grand coalition formation. A grand coalition is a phenomenon that more than three individuals or groups who are basically independent and compete for gaining reward one another make concessions and compromise, then agree to cooperate and to form a coalition all together. So examining the mechanisms in such processes was expected to provide some helpful implications. After reviewing the findings of experimental studies on grand coalitions, it was clarified that widening the scope of consideration for own rewards was effective to activate the motivation to propose a grand coalition. But it was also ascertained that the bargaining processes reduced such motivation and frequencies of actual grand coalition formation. Based on these findings, some implications were presented after discussing the importance of the notion that people always seek more advantages even if they try to cooperate together.
