situation, the choice of feasible space, and the choice of solution concept

abstract: this paper argues that two factors of the situation being modeled are critically important in predicting potential coalition formation and payoff distribution. these factors are: (1) whether coalitions form from the self-interest of their players or are pre-specified by the situation (this determines the appropriate choice of feasible space) and (2) the nature of bargaining which can be expected in the given situation (this determines the appropriate choice of solution concept on the given feasible space).;