Figure 2

Continuous space: uniform distribution. Cooperation frequencies in the TS-plane. On the left, results achieved using agents provided with \(\bar{k(0)} = 4.\) On the right, results achieved using agents provided with \(\bar{k(0)} = 8.\) Parameter S indicates the payoff obtained by cooperators that face defectors, that in turn gain a payoff equal to T (when facing cooperators)—see matrix 1. Colors indicate the averaged degree of cooperation achieved by the population. We recall that red indicates strong cooperation, while blue defection (i.e., no cooperation).