Figure 6.

Cooperation rates of stable states with private monitoring and public monitoring. (a) staying and (b) simple-standing. Each dot reflects an average of 100 trials after 30 generations with six values of benefits, b. Each initial population consists of 50% unconditional cooperators and 50% discriminators. The cooperation rate with private monitoring exceeds that with public monitoring if b 2.0 in both (a) and (b). The parameter values are N = 100, q = 0.01, c = 1, e ₁ = 0.03, e ₂ = 0.03, T = 100,000, T _s = 90,000, μ = 0, β = 3, and q = 0.01 in (a) and q = 1 in (b).