Abstract
Two experiments studied the phenomenon of procrastination, in which pigeons chose a larger, more delayed response requirement over a smaller, more immediate response requirement. The response requirements were fixed-interval schedules that did not lead to an immediate food reinforcer, but that interrupted a 55-s period in which food was delivered at random times. The experiments used an adjusting-delay procedure in which the delay to the start of one fixed-interval requirement was varied over trials to estimate an indifference point--a delay at which the two alternatives were chosen about equally often. Experiment 1 found that as the delay to a shorter fixed-interval requirement was increased, the adjusting delay to a longer fixed-interval requirement also increased, and the rate of increase depended on the duration of the longer fixed-interval requirement. Experiment 2 found a strong preference for a fixed delay of 10 s to the start of a fixed-interval requirement compared to a mixed delay of either 0 or 20 s. The results help to distinguish among different equations that might describe the decreasing effectiveness of a response requirement with increasing delay, and they suggest that delayed reinforcers and delayed response requirements have symmetrical but opposite effects on choice.
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Selected References
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- Ainslie G. W. Impulse control in pigeons. J Exp Anal Behav. 1974 May;21(3):485–489. doi: 10.1901/jeab.1974.21-485. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cicerone R. A. Preference for mixed versus constant delay of reinforcement. J Exp Anal Behav. 1976 Mar;25(2):257–261. doi: 10.1901/jeab.1976.25-257. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Deluty M. Z. Choice and the rate of punishment in concurrent schedules. J Exp Anal Behav. 1976 Jan;25(1):75–80. doi: 10.1901/jeab.1976.25-75. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Galbicka G., Branch M. N. Stimulus-food relations and free-operant postponement of timeout from response-independent food presentation. J Exp Anal Behav. 1983 Sep;40(2):153–163. doi: 10.1901/jeab.1983.40-153. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Grossbard C. L., Mazur J. E. A comparison of delays and ratio requirements in self-control choice. J Exp Anal Behav. 1986 May;45(3):305–315. doi: 10.1901/jeab.1986.45-305. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hackenberg T. D. Conjoint schedules of timeout deletion in pigeons. J Exp Anal Behav. 1992 Sep;58(2):349–360. doi: 10.1901/jeab.1992.58-349. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hineline P. N. Negative reinforcement without shock reduction. J Exp Anal Behav. 1970 Nov;14(3):259–268. doi: 10.1901/jeab.1970.14-259. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Killeen P. R. Incentive theory: II. Models for choice. J Exp Anal Behav. 1982 Sep;38(2):217–232. doi: 10.1901/jeab.1982.38-217. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Mazur J. E. Conditioned reinforcement and choice with delayed and uncertain primary reinforcers. J Exp Anal Behav. 1995 Mar;63(2):139–150. doi: 10.1901/jeab.1995.63-139. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Mazur J. E. Estimation of indifference points with an adjusting-delay procedure. J Exp Anal Behav. 1988 Jan;49(1):37–47. doi: 10.1901/jeab.1988.49-37. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Mazur J. E. Fixed and variable ratios and delays: further tests of an equivalence rule. J Exp Psychol Anim Behav Process. 1986 Apr;12(2):116–124. [PubMed] [Google Scholar]
- Mazur J. E. Procrastination by pigeons: preference for larger, more delayed work requirements. J Exp Anal Behav. 1996 Jan;65(1):159–171. doi: 10.1901/jeab.1996.65-159. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Neuringer A. J., Schneider B. A. Separating the effects of interreinforcement time and number of interreinforcement responses. J Exp Anal Behav. 1968 Nov;11(6):661–667. doi: 10.1901/jeab.1968.11-661. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rachlin H., Green L. Commitment, choice and self-control. J Exp Anal Behav. 1972 Jan;17(1):15–22. doi: 10.1901/jeab.1972.17-15. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rider D. P. Preference for mixed versus constant delays of reinforcement: Effect of probability of the short, mixed delay. J Exp Anal Behav. 1983 Mar;39(2):257–266. doi: 10.1901/jeab.1983.39-257. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rodriguez M. L., Logue A. W. Adjusting delay to reinforcement: comparing choice in pigeons and humans. J Exp Psychol Anim Behav Process. 1988 Jan;14(1):105–117. [PubMed] [Google Scholar]
- de Villiers P. A. Toward a quantitative theory of punishment. J Exp Anal Behav. 1980 Jan;33(1):15–25. doi: 10.1901/jeab.1980.33-15. [DOI] [PMC free article] [PubMed] [Google Scholar]