Value of volition test phase performance on stimulus pairs presented during training. A) An ANOVA revealed main effects of medication, volition, and reward probability, with major medication interactions driven by the Cnc vs. Dnc condition (see main text), where patients were more effective at discerning the reinforcement probabilities in the OFF state. B) When split by years diagnosed, there were significant interactions in the Cfc vs. Dfc and Cnc vs. Dnc conditions, with the latter difference driven by larger effects in the earlier stage diagnosis group. *p<.05 **p<.01