Table 1. Parameter estimates and 95% confidence intervals from fitting the choice model to group average and individual data from Experiments 1, 2, 3, and 5.

	Fitting group averages					Fitting individuals’ Data
Parameters	ms	sm	pe	ss	R2	ms	sm	pe	ss
Simulated Opp.
Exp. 1	0.48 ± 0.10	−0.38 ± 0.09	0.21 ± 0.06	0.20 ± 0.06	0.975	0.61 ± 0.19	−0.50 ± 0.16	0.24 ± 0.14	0.22 ± 0.11
Exp. 2, 300 ms	0.74 ± 0.12	−0.47 ± 0.15	0.28 ± 0.07	0.30 ± 0.07	0.988	0.96 ± 0.26	−0.66 ± 0.24	0.34 ± 0.10	0.36 ± 0.14
Exp. 2, 1000 ms	0.74 ± 0.13	−0.49 ± 0.17	0.19 ± 0.08	0.26 ± 0.08	0.984	0.93 ± 0.24	−0.67 ± 0.21	0.25 ± 0.11	0.33 ± 0.13
Exp. 3	0.86 ± 0.11	−0.44 ± 0.14	0.07 ± 0.04	0.24 ± 0.06	0.993	1.13 ± 0.28	−0.68 ± 0.23	0.11 ± 0.10	0.29 ± 0.11
Exp. 5	0.87 ± 0.17	−0.50 ± 0.21	0.11 ± 0.09	0.30 ± 0.09	0.998	1.10 ± 0.39	−0.71 ± 0.30	0.16 ± 0.10	0.36 ± 0.24
Human Dyads
Exp. 4a						0.16 ± 0.10	−0.14 ± 0.13	0.11 ± 0.9	0.31 ± 0.9

Note. ms = model strength, sm = suppression of model (strategy mix), pe = perseveration effect, ss = win stay/lose-shift tendency. For Experiment 2, fits are reported separately for the 300 ms and the 1000 ms ITI condition. Fits for individual subjects in Experiments 1, 2, 3, and five are on the basis of each subject’s condition averages. For Experiment 4a, we report parameters resulting from modeling individuals’ trial-by-trial choices.