Periodic frequencies of the cycles in 2 × 2 games: evidence from experimental economics

Regular Article


Evolutionary dynamics provides an iconic relationship – the periodic frequency of a game is determined by the payoff matrix of the game. This paper reports the first experimental evidence to demonstrate this relationship. Evidence comes from two populations randomly-matched 2 × 2 games with 12 different payoff matrix parameters. The directions, frequencies and changes in the radius of the cycles are measured definitively. The main finding is that the observed periodic frequencies of the persistent cycles are significantly different in games with different parameters. Two replicator dynamics, standard and adjusted, are employed as predictors for the periodic frequency. Interestingly, both of the models could infer the difference of the observed frequencies well. The experimental frequencies linearly, positively and significantly relate to the theoretical frequencies, but the adjusted model performs slightly better.


Statistical and Nonlinear Physics 


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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Experimental Social Science LaboratoryZhejiang UniversityHangzhouP.R. China
  2. 2.Public Administration CollegeZhejiang Gongshang UniversityHangzhouP.R. China
  3. 3.State Key Laboratory of Theoretical Physics, Institute of Theoretical PhysicsChinese Academy of SciencesBeijingP.R. China
  4. 4.Chu Kochen CollegeZhejiang UniversityHangzhouP.R. China
  5. 5.Department of EconomicsDuke UniversityDurhamUSA

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