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. Author manuscript; available in PMC: 2017 Apr 1.
Published in final edited form as: J Exp Psychol Anim Learn Cogn. 2016 Feb 15;42(2):141–162. doi: 10.1037/xan0000097

Figure 3.

Figure 3

Fits of the exponential (Eq. 1), simple hyperbola (Eq. 2), and hyperboloid (Eq. 3) functions to the discounting of a delayed hypothetical $10,000 reward. Data are from “Discounting of delayed rewards: A life-span comparison” by L. Green, A. Fry, and J. Myerson, 1994, Psychological Science, 5, p. 35.