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Qualities of behavioral fits of both models
| Direct actor | Q-learning | |
|---|---|---|
| −LL | 107.6 | 114.3 |
| Pseudo-R2 | 0.3534 | 0.3131 |
| Number of parameters | 4 | 5 |
| BIC | 118.6 | 128.0 |
Q-learning and policy-gradient models were fit to 20 subjects individually. Average quantities are reported. −LL, Negative log likelihood; BIC, Bayesian information criterion.
