Intergroup Conflict with Intragroup Altruism

Wei Hu, and Nicolas Treich


In this paper, we consider an intergroup contest game with intragroup altruism. We show that more altruism within a group increases conflict intensity by increasing total groups' efforts. Moreover, we show that, unlike the celebrated Olson's group size paradox, group size increases the probability of winning the contest provided that intragroup altruism is high enough.


Wei Hu, and Nicolas Treich, Intergroup Conflict with Intragroup Altruism, Economics Bulletin, vol. 38, n. 2, April 2018, pp. 720–724.

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Economics Bulletin, vol. 38, n. 2, April 2018, pp. 720–724