Relationship between aggregation of rewards and the possibility of polymorphism in continuous snowdrift games.

Abstract excerpt

The existence of intra-population variations in cooperation level has often been reported by some empirical studies. Evolutionary conditions of polymorphism in cooperation have been investigated by using a framework of the continuous snowdrift game. However, our insights from this framework have been limited because of an assumption that the cooperative reward is a function of total amount of investments within...

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