Cooperation and wealth

Oded Stark*

*Corresponding author for this work

Research output: Contribution to journalComment/debate


We calculate the equilibrium fraction of cooperators in a population in which payoffs accrue from playing a single-shot prisoner's 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 population's level of wealth.

Original languageEnglish
Pages (from-to)109-115
Number of pages7
JournalJournal of Economic Behavior and Organization
Issue number1
StatePublished - Jan 2004
Externally publishedYes


  • Equilibrium fraction of cooperators
  • Population's level of wealth
  • Single-shot prisoner's dilemma game


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