Evolution of the propensity to punish as a function of time.

<p>The values correspond to the population's median of the individual values as a function of time for the seven different adaptation dynamics (A to G). The values for each adaptation dynamic result from 800 system realizations with a total of 3200 agents. The empirical median value calculated from all three experiments of Fehr/Gachter's and Fudenberg/Pathak <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0054308#pone.0054308-Fehr3" target="_blank">[25]</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0054308#pone.0054308-Fehr4" target="_blank">[26]</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0054308#pone.0054308-Fudenberg1" target="_blank">[59]</a> is shown as the continuous horizontal line. For adaptation dynamic (B), the plot shows the obtained median values for all tolerance range parameters . The parameters of our simulation are: .