Figure 2.

Reward learning task performance (probabilistic instrumental learning task) by medication group. (A) Mean percentage of trials during which participants choose the advantageous stimuli in a reward learning task (probabilistic instrumental learning task). (B) Learning curve showing proportion of participants in each group choosing the symbol associated with a high probability of loss or gain, trial by trial. High probability stimuli are advantageous in gain trials and not advantageous in loss trials. ∗∗p < .01. Error bars show ±1 standard error.