Social cohesion V.S. task cohesion: An evolutionary game theory study

Using methods from evolutionary game theory, this paper investigates the difference between social cohesion and task cohesion in promoting the evolution of cooperation in group interactions. Players engage in public goods games and are allowed to leave their groups if too many defections occur. Both social cohesion and task cohesion may prevent players from leaving. While a higher level of social cohesion increases a player’s tolerance towards defections, task cohesion is associated with her group performance in the past. With a higher level of task cohe-

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