Rats exhibit similar biases in foraging and intertemporal choice tasks
AuthorKane, Gary A
Bornstein, Aaron M
Wilson, Robert C
Daw, Nathaniel D
Cohen, Jonathan D
AffiliationUniv Arizona, Dept Psychol, Cognit Sci Program
MetadataShow full item record
PublisherELIFE SCIENCES PUBLICATIONS LTD
CitationeLife 2019;8:e48429 doi: 10.7554/eLife.48429
RightsCopyright © 2019, Kane et al. This article is distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use and redistribution provided that the original author and source are credited.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractAnimals, including humans, consistently exhibit myopia in two different contexts: foraging, in which they harvest locally beyond what is predicted by optimal foraging theory, and intertemporal choice, in which they exhibit a preference for immediate vs. delayed rewards beyond what is predicted by rational (exponential) discounting. Despite the similarity in behavior between these two contexts, previous efforts to reconcile these observations in terms of a consistent pattern of time preferences have failed. Here, via extensive behavioral testing and quantitative modeling, we show that rats exhibit similar time preferences in both contexts: they prefer immediate vs. delayed rewards and they are sensitive to opportunity costs of delays to future decisions. Further, a quasi-hyperbolic discounting model, a form of hyperbolic discounting with separate components for short- and long-term rewards, explains individual rats’ time preferences across both contexts, providing evidence for a common mechanism for myopic behavior in foraging and intertemporal choice.
NoteOpen access journal
VersionFinal published version
SponsorsUnited States Department of Health & Human Services, National Institutes of Health (NIH) - USA NIH National Institute of Mental Health (NIMH) [F31MH109286]