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Evolution and Endogenous Interactions

  • George Mailath

    (University of Pennsylvania)

  • Larry Samuelson

    (University of Wisconsin)

  • Avner Shaked

    (University of Bonn)

We examine an evolutionary model with "local interactions," so that some agents may be more likely to interact than others. We show that equilibrium strategy choices with given local interactions correspond to correlated equilibria of the underlying game, suggesting an new interpretation for correlated equilibrium. We then allow the pattern of interactions itself to be shaped by evolutionary pressures. If agents do not have the ability to avoid unwanted interactions, the heterogeneous outcomes can appear, including outcomes in which different groups play different Pareto ranked equilibria. If agents do have the ability to avoid undesired interaction, then we derive conditions under which outcomes must be not only homogeneous but efficient.

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Paper provided by EconWPA in its series Game Theory and Information with number 9410003.

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Date of creation: 26 Oct 1994
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Handle: RePEc:wpa:wuwpga:9410003
Note: Three tex files; use georgbi.bib and larrybib.bib in george.tex
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