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题目：Cooperative Strategies in Anonymous Economies: An Experiment

主讲人：Camera, Gabriele Professor, Purdue University

Abstract

We study cooperation in economies of indefinite duration. Participants faced a sequence of prisoner’s dilemmas with anonymous opponents. We identify and characterize the strategies employed at the aggregate and at the individual level. We report that (i) grim trigger well describes aggregate play but not individual play; (ii)coordination on cooperative strategies does not improve with experience; (iii) systematic defection does not crowd-out systematic cooperation.