Journal of Political Economy Vol. 128 No. 5 2020
Cooperation and Community Responsibility
Abstract
I consider markets in which participants have very little information: for instance, agents are anonymous, cannot verify each other’s identities, or have little information about each other’s past transactions. I ask whether it is possible to prevent opportunistic behavior in such settings in the absence of contractual enforcement. I model such markets as repeated anonymous-random-matching games and show that cooperation is sustainable if players are sufficiently patient and can announce their name (though unverifiable) before every transaction. Cooperation is achieved by “community responsibility”: if a player deviates, her entire community is held responsible and punished by the victim. Sustaining cooperation involves partial authentication of identities by checking players’ knowledge about past transactions.
- DOI
- 10.1086/705671
- Volume
- 128
- Issue
- 5
- Pages
- 1976-2009
- Language
- en
- Sources
- bibtex:phds-export.bib openalex crossref