EFFECTS OF INDIVIDUAL'S SELF-EXAMINATION ON COOPERATION IN PRISONER'S DILEMMA GAME

Jian-Yue Guan (), Jin-Tu Sun and Ying-Hai Wang
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Jian-Yue Guan: Institute of Computational Physics and Complex Systems, Lanzhou University, Lanzhou, Gansu 730000, China
Jin-Tu Sun: Institute of Computational Physics and Complex Systems, Lanzhou University, Lanzhou, Gansu 730000, China;
Ying-Hai Wang: Institute of Computational Physics and Complex Systems, Lanzhou University, Lanzhou, Gansu 730000, China;

International Journal of Modern Physics C (IJMPC), 2010, vol. 21, issue 10, 1229-1236

Abstract: We study a spatial evolutionary prisoner's dilemma game on regular network's one-dimensional regular ring and two-dimensional square lattice. The individuals located on the sites of networks can either cooperate with their neighbors or defect. The effects of individual's self-examination are introduced. Using Monte Carlo simulations and pair approximation method, we investigate the average density of cooperators in the stationary state for various values of payoff parametersband the time intervalΔt. The effects of the fractionpof players in the system who are using the self-examination on cooperation are also discussed. It is shown that compared with the case of no individual's self-examination, the persistence of cooperation is inhibited when the payoff parameterbis small and at certainΔt (Δt > 0)orp (p > 0), cooperation is mostly inhibited, while whenbis large, the emergence of cooperation can be remarkably enhanced and mostly enhanced atΔt = 0orp = 1.

Keywords: Self-examination; game dynamics; cooperative behavior; 89.65.-s; 02.50.Le; 07.05.Tp; 87.23.Kg (search for similar items in EconPapers)
Date: 2010
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DOI: 10.1142/S0129183110015798

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