Figure 5
From: Collaborative hierarchy maintains cooperation in asymmetric games
Individual cooperation during Phase II. Ratio of participants as a function of their average APD cooperation frequency and for all treatments. We define defectors as participants who cooperate less than 20% of the times and cooperators as subjects cooperating in almost all interactions (>80%). Participants having a cooperation frequency between 20% and 80% are classified as conditional cooperators. We observe the three participant categories in all treatments with a large prevalence of defectors and conditional cooperators with respect to pure cooperators. Hierarchy profile types are homogeneously distributed among cooperation frequencies (comparison of individual cooperation frequency distributions of low and high hierarchy profiles: SH treatments MW U = 1138.5, p = 0.923; CH treatments MW U = 1317, p = 0.224; RH treatments MW U = 693.5, p = 0.611).
