Promotion of cooperation due to heterogenous aspirations on the random regular graph (RRG) and the small-world (SW) network.

<p>Left panel depicts the density of cooperators in dependence on the fraction of type players for different values of the aspiration parameter for the RRG. Right panel depicts in dependence on for different values of for the Watts-Strogatz SW network with the fraction of rewired links equalling . These results are in agreement with those presented in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0015117#pone-0015117-g002" target="_blank">Fig. 2</a>, supporting the conclusion that the impact of heterogenous aspirations on the evolution of cooperation is robust against alterations of the interaction network. As on the square lattice, low, but also intermediate, values of require for cooperation to thrive, while higher values of sustain cooperation optimally only if . Depicted results in both panels were obtained for and .