EFFECTS OF REWARD BUNDLING ON MALE RATS' PREFERENCE FOR LARGER–LATER FOOD REWARDS
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In both humans and nonhumans, prior research demonstrates increased preference for larger‐later over smaller‐sooner rewards when rewards are bundled together in a series (i.e., when an operant choice produces multiple discrete reward deliveries, as opposed to only a single delivery). These findings can be predicted using a traditional hyperbolic delay‐discounting model. The present study was designed to examine the parametric effects of the size of the reward bundle on larger‐later reward preference in male rats. During a reward‐bundling phase, rats were exposed to bundle‐sizes of either 1 (i.e., no bundling), 3, or 9 rewards. Rats in the Bundle‐size 9 group showed significantly greater larger‐later reward preference across a range of delays (0‐17.5 s) than rats in any other group, but no other significant differences in choice were observed between groups. In addition, when choice for unbundled rewards was assessed following the reward‐bundling phase, rats in the Bundle‐size 9 group showed a significant increase in larger‐later reward preference (compared to a pre‐test). Obtained data from the reward‐bundling phase are compared to model‐predicted data, and potential mechanisms of the observed increase in self‐control for unbundled rewards are discussed.
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The relation between impulsive choice and acquisition of self-administration has been inconsistently replicated with other drugs of abuse.
“This finding has been inconsistently replicated, however, with other drugs of abuse”
From Changing Delay Discounting and Impulsive Choice: Implications for Addictions, Prevention, and Human Health (2019) · cites this paper as Stein & Madden, 2013
A completed experiment demonstrated that lasting reductions in rats' impulsive choice could be achieved by bundling training.
“At the same time, we completed an experiment demonstrating that lasting reductions in rats’ impulsive choice could be achieved by providing them with “bundling training” (Stein, Smits, Johnson, Liston, & Madden, 2013).”
From Changing Delay Discounting and Impulsive Choice: Implications for Addictions, Prevention, and Human Health (2019) · cites this paper as Stein et al., 2013
In the delay-exposure experiment, rats given delay-exposure training made far fewer impulsive choices than no-delay rats when choosing between one pellet immediately and three pellets after a 15-s delay.
“When rats subsequently chose between one pellet immediately and three pellets following a 15-s delay, delay-exposure rats made far fewer impulsive choices than did rats in the no-delay group.”
From Changing Delay Discounting and Impulsive Choice: Implications for Addictions, Prevention, and Human Health (2019) · cites this paper as Stein et al., 2013
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- Authors
- Stein, J. S., Smits, R. R., Johnson, P. S., Liston, K. J., & Madden, G. J.
- Affiliations
- Utah State University (US)
- Corresponding author
- Stein, Jeffrey S.
- Venue
- Journal of the Experimental Analysis of Behavior
- Publisher
- Wiley
- Published
- 2013-01-14
- Volume
- 99
- Issue
- 2
- Pages
- 150-158
- ISSN
- 0022-5002 (ISSN-L)
- 1938-3711
- PMC
- PMC4267752
- OpenAlex
- W1582764520
- Cited by
- 30
- References
- 32
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 2 · 2023: 2 · 2022: 2 · 2021: 3 · 2020: 3 · 2019: 3 · 2018: 2 · 2017: 1 · 2015: 6 · 2014: 3 · 2013: 1
- FWCI
- 2.41
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Journal of the Experimental Analysis of Behavior (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institute on Drug Abuse (R01DA029608, DA029605)
- Topics
- Social Sciences › Decision Sciences › General Decision Sciences › Decision-Making and Behavioral Economics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
- Keywords
- delay discounting, hyperbolic discounting, bundle size, self-control, food reward, rats, choice behavior
- MeSH terms
- Animals, Choice Behavior, Conditioning, Operant, Impulsive Behavior, Judgment, Male, Reward, Time Factors, Rats, Long-Evans, Rats
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