Cooperation in Heterogeneous Populations

  • Karl Sigmund
  • Martin Nowak
Part of the Recent Research in Psychology book series (PSYCHOLOGY)


This paper deals with stochastic reactive strategies for the Iterated Prisoner’s Dilemma. It considers populations of individuals meeting randomly, and noisy interactions. Both the analysis of monomorphic and heteromorphic populations show that the reciprocal strategy Tit For Tat acts like a pivot: it triggers an evolution towards cooperation, but is not the ultimate beneficiary of such an evolution.


Heterogeneous Population Game Dynamic Vervet Monkey Previous Round Reciprocal Altruism 
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Copyright information

© Springer-Verlag New York, Inc. 1994

Authors and Affiliations

  • Karl Sigmund
    • 1
  • Martin Nowak
    • 2
  1. 1.Department of MathematicsUniversity of ViennaViennaAustria
  2. 2.Department of ZoologyUniversity of OxfordOxfordEngland

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