Friendship, cliquishness, and the emergence of cooperation.

  title={Friendship, cliquishness, and the emergence of cooperation.},
  author={Daniel J Hruschka and Joseph Henrich},
  journal={Journal of theoretical biology},
  volume={239 1},
The evolution of cooperation is a central problem in biology and the social sciences. While theoretical work using the iterated prisoner's dilemma (IPD) has shown that cooperation among non-kin can be sustained among reciprocal strategies (i.e. tit-for-tat), these results are sensitive to errors in strategy execution, cyclical invasions by free riders, and the specific ecology of strategies. Moreover, the IPD assumes that a strategy's probability of playing the PD game with other individuals is… CONTINUE READING
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