The Influence Of Irrationality On Choosing Game Strategy

The evolution of cooperation widely exists in all areas of nature and human society. Cooperation in everywhere has promoted the development of nature and the whole society. Therefore, the explanation of cooperation evolution or maintenance mechanisms of collaboration system stability has been one of the important issues, which biologists, social scientists, economists and so on are trying to solve. The study of this paper belongs to the researches of the evolution of cooperation. On the basis of the existing results, we have explored the influence of non-rational on game strategy choices. This paper follows the direction of the international academic community, and there is a great innovation in a certain extent. The results of the past researches are all assuming that players are rational. But in fact, not all players are intellectual. Obviously, the studies of the effects of non-rational on cooperative game system will have great academic values and theoretical significances. From the perspective of non-rational, this paper research on the evolution of cooperation behavior, which has great practical significances and application prospects to explain or research the extreme behavior.Based on the experiments of Dreber et al(2008) and Wu et al.(2009), we make use of z-Tree to design the initial strength of 50 two-person iterated prisoner’s dilemma game experiments. Unlike most experimental design before, in this paper, each of the participants has three strategies to choose from(cooperation, non-cooperation and punishment); and participants only know each pair will interact another round with probability 3/4, but they don’t know when the experiment ends each round; when the interaction ends, all participants will be randomly matched with another student, and then they will repeat the same games in the new interaction again. This paper analyzes nine experimental data, which are nearly same initial conditions; a total of 240 college students in Yunnan Province participated in the experiments. According to the method for measuring the non-rational, there are 61 non-rational participants and 179 rational participants.Firstly, this paper measures the non-rational. And then it describes the experimental data in the basic statistical analysis from five different sides, by employing nonparametric test in analyzing the differences between rational players and non-rational players. Finally, we discuss the effect of the non-rational in control of other factors on strategic choices with Generalized linear model. The conclusions show that, the non-rational will "Over-reacted"; the non-rational are not benefit to cooperation; the non-rational tend to punish opponents; the non-rational can bring more non-rational behavior; the non-rational gain less; the non-rational can benefit from non-cooperation; the non-rational also follow "winners do not punish". In addition, we make discussions: should not be "to violence with violence"; either experience or gender has significant effect on the choice of game strategies; major, age or region has significant effect on the choice of cooperation or non-cooperation.