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Percentage of choice of the smaller, sooner reward plotted as a function of the time from the choice until the outcome period. Data are reprinted from Behaviour Analysis Letters, 1, L. Green, E. B. Fisher Jr., S. Perlow, and L. Sherman, “Preference Reversal and Self-Control: Choice as a Function of Reward Amount and Delay,” pp. 43–51, 1981, with permission from Elsevier.
