caa a22 4500 397544839 CHVBK 20180308164736.0 cr unu---uuuuu 161202e199607 xx s 000 0 eng 10.2307/2297892 doi (NATIONALLICENCE)oxford-10.2307/2297892 Cooperation in Community Interaction Without Information Flows [Elektronische Daten] [Parikshit Ghosh, Debraj Ray] We study cooperative behaviour in communities where the flow of information regarding past conduct is limited or missing. Players are initially randomly matched with no knowledge of each other's past actions; they endogenously decide whether or not to continue the repeated relationship. There is incomplete information regarding player types: a subset of the population is myopic, while the remainder have discount factors that permit cooperation, in principle. We define social equilibrium in such communities. Such equilibria are characterized by an initial testing phase, followed by cooperation if the test is successful. It is precisely the presence of myopic types that permit cooperation, by raising barriers to entry into new relationships. We examine the implications of increased patience, which takes two forms: an increase in the number of non-myopic types, and an increase in the discount factor of non-myopic types. These two notions turn out to have strikingly different implications for the degree of cooperation that can be sustained. © 1996 The Review of Economic Studies Limited Ghosh Parikshit Boston University aut Ray Debraj Boston University and Instituto de Análisis Económico (CSIC) aut The Review of Economic Studies Wiley-Blackwell 63/3(1996-07), 491-519 0034-6527 63:3<491 1996 63 restud https://doi.org/10.2307/2297892 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.2307/2297892 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ghosh Parikshit Boston University aut NATIONALLICENCE 700 1- Ray Debraj Boston University and Instituto de Análisis Económico (CSIC) aut NATIONALLICENCE 773 0- The Review of Economic Studies Wiley-Blackwell 63/3(1996-07), 491-519 0034-6527 63:3<491 1996 63 restud Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford