We calculate the equilibrium fraction of cooperators in a population in which payoffs accrue from playing a single-shot prisonerÂs dilemma game. Individuals who are hardwired as cooperators or defectors are randomly matched into pairs, and cooperators are able to perfectly find out the type of a partner to a game by incurring a recognition cost. We show that the equilibrium fraction of cooperators relates negatively to the populationÂs level of wealth.
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Paper provided by University of Bonn, Center for Development Research (ZEF) in its series Discussion Papers with number
18763.