Figure 1.

Left panels: Schematics showing (A) the delay discounting task, (B) the effort/delay calibration task, and (C) the effort discounting task. Participants were instructed to select one of the two options. Right panels: Indifference points from a representative participant for (D) the delay discounting task, (E) the effort/delay calibration task, and (F) the effort discounting task.