Table 1. Summary of parameters used in the experiment.

Parameter	Value
Number of agents	50
Number of generations	50000
Mutation rate	0.01
Temptation payoff	T = 3
Hurt payoff	H = −1
Enforcement payoff	E = −2
Punishment payoff	P = −9
Meta-enforcement payoff	ME = −2
Meta-punishment payoff	MP = −9