Figure 2.

Discounting is slower when the representation of the outcome is more energetically favorable. (A) Examples of two searches through an energy landscape (indicated by gray shading) with one basin, which is centered at (20,0). The reward is located at the center of the basin. (B) The attenuation of subjective value with increasing delay (i.e., discounting) is less pronounced when the basin is deeper. Note that the dark blue trace is the same as Fig. 1B.