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J Exp Anal Behav. 1991 March; 55(2): 233–244.
PMCID: PMC1323057

Subjective probability and delay.


Human subjects indicated their preference between a hypothetical $1,000 reward available with various probabilities or delays and a certain reward of variable amount available immediately. The function relating the amount of the certain-immediate reward subjectively equivalent to the delayed $1,000 reward had the same general shape (hyperbolic) as the function found by Mazur (1987) to describe pigeons' delay discounting. The function relating the certain-immediate amount of money subjectively equivalent to the probabilistic $1,000 reward was also hyperbolic, provided that the stated probability was transformed to odds against winning. In a second experiment, when human subjects chose between a delayed $1,000 reward and a probabilistic $1,000 reward, delay was proportional to the same odds-against transformation of the probability to which it was subjectively equivalent.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
  • Ainslie GW. Impulse control in pigeons. J Exp Anal Behav. 1974 May;21(3):485–489. [PMC free article] [PubMed]
  • Hayes SC, Brownstein AJ, Haas JR, Greenway DE. Instructions, multiple schedules, and extinction: Distinguishing rule-governed from schedule-controlled behavior. J Exp Anal Behav. 1986 Sep;46(2):137–147. [PMC free article] [PubMed]
  • Mischel W. Theory and research on the antecedents of self-imposed delay of reward. Prog Exp Pers Res. 1966;3:85–132. [PubMed]
  • Mischel W, Grusec J. Waiting for rewards and punishments: effects of time and probability on choice. J Pers Soc Psychol. 1967 Jan;5(1):24–31. [PubMed]
  • Mischel W, Shoda Y, Rodriguez MI. Delay of gratification in children. Science. 1989 May 26;244(4907):933–938. [PubMed]
  • Rachlin H, Green L. Commitment, choice and self-control. J Exp Anal Behav. 1972 Jan;17(1):15–22. [PMC free article] [PubMed]
  • Silberberg A, Murray P, Christensen J, Asano T. Choice in the repeated-gambles experiment. J Exp Anal Behav. 1988 Sep;50(2):187–195. [PMC free article] [PubMed]

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