Author response image 1. Identifiability of reward sensitivity and learning rate.

Learning rate (LR) and reward sensitivity (RS) were simulated at three levels (LR:.666,.75, and.825; RS: 1, 1.25, and 1.5), chosen based on the range of actual participants’ values; additional parameters of associability weight and unchosen learning rate were also simulated at three levels, resulting in 81 different combinations of parameters. The average recovered parameter value for each combination of learning rate and reward sensitivity is plotted above, showing that reward sensitivity is recovered well at each level of learning rate.