Get it while it's hot: a peak-first bias in self-generated choice order in rhesus macaques.

Animals typically must make a number of successive choices to achieve a goal: e.g., eating multiple food items before becoming satiated. However, it is unclear whether choosing the best first or saving the best for last represents the best choice strategy to maximize overall reward. Specifically, si...

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Autores principales:	Kanghoon Jung, Jerald D Kralik
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d0214ad1f9cf4aaa8a0349db2884b465
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spelling	oai:doaj.org-article:d0214ad1f9cf4aaa8a0349db2884b4652021-11-18T08:40:33ZGet it while it's hot: a peak-first bias in self-generated choice order in rhesus macaques.1932-620310.1371/journal.pone.0083814https://doaj.org/article/d0214ad1f9cf4aaa8a0349db2884b4652013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24376758/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Animals typically must make a number of successive choices to achieve a goal: e.g., eating multiple food items before becoming satiated. However, it is unclear whether choosing the best first or saving the best for last represents the best choice strategy to maximize overall reward. Specifically, since outcomes can be evaluated prospectively (with future rewards discounted and more immediate rewards preferred) or retrospectively (with prior rewards discounted and more recent rewards preferred), the conditions under which each are used remains unclear. On the one hand, humans and non-human animals clearly discount future reward, preferring immediate rewards to delayed ones, suggesting prospective evaluation; on the other hand, it has also been shown that a sequence that ends well, i.e., with the best event or item last, is often preferred, suggesting retrospective evaluation. Here we hypothesized that when individuals are allowed to build the sequence themselves they are more likely to evaluate each item individually and therefore build a sequence using prospective evaluation. We examined the relationship between self-generated choice order and preference in rhesus monkeys in two experiments in which the distinctiveness of options were relatively high and low, respectively. We observed a positive linear relationship between choice order and preference among highly distinct options, indicating that the rhesus monkeys chose their preferred food first: i.e., a peak-first order preference. Overall, choice order depended on the degree of relative preference among alternatives and a peak-first bias, providing evidence for prospective evaluation when choice order is self-generated.Kanghoon JungJerald D KralikPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 12, p e83814 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kanghoon Jung Jerald D Kralik Get it while it's hot: a peak-first bias in self-generated choice order in rhesus macaques.
description	Animals typically must make a number of successive choices to achieve a goal: e.g., eating multiple food items before becoming satiated. However, it is unclear whether choosing the best first or saving the best for last represents the best choice strategy to maximize overall reward. Specifically, since outcomes can be evaluated prospectively (with future rewards discounted and more immediate rewards preferred) or retrospectively (with prior rewards discounted and more recent rewards preferred), the conditions under which each are used remains unclear. On the one hand, humans and non-human animals clearly discount future reward, preferring immediate rewards to delayed ones, suggesting prospective evaluation; on the other hand, it has also been shown that a sequence that ends well, i.e., with the best event or item last, is often preferred, suggesting retrospective evaluation. Here we hypothesized that when individuals are allowed to build the sequence themselves they are more likely to evaluate each item individually and therefore build a sequence using prospective evaluation. We examined the relationship between self-generated choice order and preference in rhesus monkeys in two experiments in which the distinctiveness of options were relatively high and low, respectively. We observed a positive linear relationship between choice order and preference among highly distinct options, indicating that the rhesus monkeys chose their preferred food first: i.e., a peak-first order preference. Overall, choice order depended on the degree of relative preference among alternatives and a peak-first bias, providing evidence for prospective evaluation when choice order is self-generated.
format	article
author	Kanghoon Jung Jerald D Kralik
author_facet	Kanghoon Jung Jerald D Kralik
author_sort	Kanghoon Jung
title	Get it while it's hot: a peak-first bias in self-generated choice order in rhesus macaques.
title_short	Get it while it's hot: a peak-first bias in self-generated choice order in rhesus macaques.
title_full	Get it while it's hot: a peak-first bias in self-generated choice order in rhesus macaques.
title_fullStr	Get it while it's hot: a peak-first bias in self-generated choice order in rhesus macaques.
title_full_unstemmed	Get it while it's hot: a peak-first bias in self-generated choice order in rhesus macaques.
title_sort	get it while it's hot: a peak-first bias in self-generated choice order in rhesus macaques.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/d0214ad1f9cf4aaa8a0349db2884b465
work_keys_str_mv	AT kanghoonjung getitwhileitshotapeakfirstbiasinselfgeneratedchoiceorderinrhesusmacaques AT jeralddkralik getitwhileitshotapeakfirstbiasinselfgeneratedchoiceorderinrhesusmacaques
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Get it while it's hot: a peak-first bias in self-generated choice order in rhesus macaques.

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