Proper aspiration level promotes generous behavior in the spatial prisoner’s dilemma game

Zhi-Hai Rong (), Qian Zhao, Zhi-Xi Wu, Tao Zhou and Chi Kong Tse
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Zhi-Hai Rong: CompleX Lab, Web Sciences Center, University of Electronic Science and Technology of China
Qian Zhao: CompleX Lab, Web Sciences Center, University of Electronic Science and Technology of China
Zhi-Xi Wu: Institute of Computational Physics and Complex Systems, Lanzhou University
Tao Zhou: CompleX Lab, Web Sciences Center, University of Electronic Science and Technology of China
Chi Kong Tse: The Hong Kong Polytechnic University

The European Physical Journal B: Condensed Matter and Complex Systems, 2016, vol. 89, issue 7, 1-7

Abstract: Abstract Zero-determinant strategies, which can unilaterally define a linear relationship between two individuals’ long-term payoff, have drawn much attention to comprehend the emergence of cooperation among individuals with repeated interactions. A subset of zero-determinant strategies, extortion strategy, can let an extortioner’s surplus exceed her opponent’s by a fixed percentage. On the other hand, the dual generosity strategy can ensure that a complier’s payoff is never larger than her opponent’s. In the framework of the prisoner’s dilemma game driven by payoff aspiration, we investigate in this paper the evolution of generosity strategy, in competition with extortion and unconditional defection strategies. We show that extortioners act as a catalyst to induce more defectors to change to compliers. Such influence will enhance when extortioners become more greedy. At a low aspiration level where individuals are easy to be satisfied with their current payoffs, different strategies can coexist. With the increase of aspiration level, unsatisfied individuals are likely to turn to compliers and build long-term reciprocity with their neighbors. However, at a high aspiration level, individuals are difficult to be satisfied with their payoffs and may randomly change their behaviors. Thus proper aspiration level promotes the emergence of generous behavior in the spatial prisoner’s dilemma game.

Keywords: Statistical; and; Nonlinear; Physics (search for similar items in EconPapers)
Date: 2016
References: View complete reference list from CitEc
Citations: View citations in EconPapers (15)

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DOI: 10.1140/epjb/e2016-70286-0

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