Abstract: In this paper,cooperation degree is regarded as a main factor,which influences teamwork’s performance.A two-person teamwork is taken as an example to establish a game model concerning individual’s effort degree and cooperation degree under certain allocation rules.Nash equilibrium of this game is studied.Based on qualitative simulation algorithm,a semi-qualitative simulation algorithm is designed by integrating quantitative calculation with qualitative reasoning.Comparing with the naive mathematical analysis method in the game theory,the semi-qualitative simulation algorithm developed in this paper can resolve some game problems without precise mathematical models.

Key words: Teamwork’s performance, cooperation, game, qualitative simulation