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. 2013 Jun 1;36(6):899–904. doi: 10.5665/sleep.2720

Figure 1.

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.