Before revision:  The results are relevant both to computer simulations of cooperation in networks and in particular to real-world cooperation experiments, where the number of replications is typically low and stochastic initial correlations between cooperativeness and network position may be present .
After revision:  The results are relevant both to computer simulations of cooperation in networks and in particular to real-world cooperation experiments, where the number of replications is typically low and stochastic initial correlations between cooperativeness and network position can affect the results of such experiments .