The rise of cooperation in correlated matching prisoners dilemma: An experiment |
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Authors: | Chun-Lei Yang Ching-Syang Jack Yue I-Tang Yu |
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Institution: | (1) Research Center for Humanity and Social Sciences, Academia Sinica, 128 Academia Rd. Sec. 2, Taipei, 115, Taiwan, ROC;(2) Department of Statistics, National Chengchi University, 64 Chi-Nan Rd. Sec. 2, Taipei, 11623, Taiwan, ROC;(3) Department of Statistics, Tunghai University, Taichung, Taiwan, ROC |
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Abstract: | Recently, there has been a Renaissance for multi-level selection models to explain the persistence of unselfish behavior in
social dilemmas, in which assortative/correlated matching plays an important role. In the current study of a multi-round prisoners’
dilemma experiment, we introduce two correlated matching procedures that match subjects with similar action histories together.
We discover significant treatment effects, compared to the control procedure of random matching. Particularly with the weighted
history matching procedure we find bifurcations regarding group outcomes. Some groups converge to the all-defection equilibrium
even more pronouncedly than the control groups do, while other groups generate much higher rate of cooperation, which is also
associated with higher relative reward for a typical cooperative action. All in all, the data show that cooperation does have
a much better chance to persist in a correlated/assortative-matching environment, as predicted in the literature.
Electronic Supplementary Material Supplementary material is available in the online version of this article at .
JEL Classification B52, C91, D74 |
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Keywords: | Prisoners’ dilemma Cooperation Experiment Unselfish behavior Evolution Assortative matching Correlated matching Multi-level selection |
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