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. 2018 Jul 11;13(7):e0199448. doi: 10.1371/journal.pone.0199448

Fig 2. The number of dominant results for nine strategies tested in pairwise contests.

Fig 2

AC stands for always-cooperate. AD stands for always-defect. AT stands for always-trembling. TFT stands for tit-for-tat. GTFT stands for generous tit-for-tat. TWTH stands for TFT-with-trembling-hand. SDH stands for shame-driven-hiding. SDD stands for shame-driven-denying. GDA stands for guilt-driven-amending. P stands for Pavlov. (A) When b = 1 and c = 0.75, the ranking of nine strategies. (B) When b = 1 and c = 0.5, the ranking of the strategies. (C) When b = 1 and c = 0.25, the ranking of nine strategies.