Table 6.
Experiments results of the prisoner’s dilemma game and model fitting.
| Experiment | p(defect|k-d) | p(defect|k-c) | p(k-d) | p(k-c) | p(defect|unknown) | θexpt | θ1 | θ2 | θ3 | θ4 | θfit | pfit |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 0.73 | 0.67 | 0.50 | 0.50 | 0.60 | 98.23° | 134.78° | 149.39° | 137.09° | 144.87° | 105.30° | 0.52 |
| 2 | 0.80 | 0.77 | 0.50 | 0.50 | 0.63 | 101.29° | 134.89° | 159.52° | 135.97° | 155.71° | 100.24° | 0.64 |
| 3 | 0.90 | 0.87 | 0.50 | 0.50 | 0.87 | 91.08° | 134.60° | 180.00° | 135.62° | 180.00° | 90.00° | 0.88 |
| 4 | 0.83 | 0.8 | 0.50 | 0.50 | 0.70 | 98.21° | 134.77° | 172.23° | 135.83° | 164.44° | 93.88° | 0.76 |
| 5 | 0.83 | 0.73 | 0.50 | 0.50 | 0.70 | 96.12° | 133.82° | 164.17° | 137.08° | 152.39° | 97.92° | 0.68 |
| 6 | 0.77 | 0.83 | 0.50 | 0.50 | 0.80 | 90.00° | 136.44° | 157.27° | 134.29° | 167.16° | 101.36° | 0.64 |
| 7 | 0.87 | 0.73 | 0.50 | 0.50 | 0.77 | 92.39 ° | 133.25° | 180.00° | 137.55° | 153.63° | 90.00° | 0.80 |
Experiments 1–7: Li and Taplin (2002) experiments 1–7. Columns 2–6 show the observed probabilities in the experiments. θexpt, θ1, θ2, θ3, and θ4 are the computed interference-phase differences of p(defect|unknown), p(defect|k-d), p(defect|k-c), p(collaborate|k-d), and p(collaborate|k-c), respectively, from observed probabilities. θ = 180° when cosθ is slightly <−1 due to random error. θfit is the fit value of θexpt by BIDM model. pfit is the p(defect|unknown) fitted by BIDM model with θfit.