Figure 1.

RTs and error rates to decision form and between-object reinforcement distance. a, RTs and error rates were significantly affected by decision form. Subjects were significantly slower and made significantly more errors when they responded to PunPun relative to RewPun and RewRew trials. b, In addition, RTs and error rates were significantly affected by between-object reinforcement distance. Subjects were significantly slower and made significantly more errors when they responded to close relative to medium trials, and to medium relative to far trials. Error bars indicate SE.