Fig. 2.

Average fraction of cooperation as a function of partner update rate (A) and estimated difference in fraction of cooperation from the corresponding static cases as a function of k (B) for cliques (dashed lines) and random (solid lines) initial conditions, for r = 1, 3, 6 and k = 0, 1, 3, 5. Symbols indicate different values of k (triangles, k = 1; circles, k = 3; squares, k = 5). Error bars are 95% confidence intervals (see Materials and Methods for details).