Abstract: In this paper, we above all present the concept of the degree of willingness to cooperate (DWC) based on relative game-theoretic concept from viewpoint of psychology. On the base of the consideration of member characteristic and history information, we build up DWC model on dynamic evolution of group, which surmounts the localization of the neglect of history information, group member characteristic, and their desire and of the absence of initiative interpretation about cooperation-competition-conflict. By that we open out the process of strategy adjustment and interaction of group member before attain equilibrium. In order to show its value in application, we engage in simulation study on DWC model involved with circumstance and continency and givea detail analysis about simulation result.

Key words: degree of willingness to cooperate, member characteristic, history information, DWC iterated model