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Systematic comparison of risky choices in humans and monkeys

Seak, Leo Chi U. and Ferrari-Toniolo, Simone and Jain, Ritesh and Nielsen, Kirby and Schultz, Wolfram (2023) Systematic comparison of risky choices in humans and monkeys. . (Unpublished)

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The past decades have seen tremendous progress in fundamental studies on economic choice in humans. However, elucidation of the underlying neuronal processes requires invasive neurophysiological studies that are met with difficulties in humans. Monkeys as evolutionary closest relatives offer a solution. The animals display sophisticated and well-controllable behavior that allows to implement key constructs of proven economic choice theories. However, the similarity of economic choice between the two species has never been systematically investigated. We investigated compliance with the independence axiom (IA) of expected utility theory as one of the most demanding choice tests and compared IA violations between humans and monkeys. Using generalized linear modeling and cumulative prospect theory (CPT), we found that humans and monkeys made comparable risky choices, although their subjective values (utilities) differed. These results suggest similar fundamental choice mechanism across these primate species and encourage to study their underlying neurophysiological mechanisms.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Seak, Leo Chi U.0000-0001-8188-6891
Ferrari-Toniolo, Simone0000-0001-9009-0764
Jain, Ritesh0000-0003-0227-2491
Nielsen, Kirby0000-0003-4536-1021
Schultz, Wolfram0000-0002-8530-4518
Additional Information:The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY 4.0 International license. We thank Aled David and Christina Thompson for animal and technical support. This study was supported by Wellcome Trust (WT 095495, WT 204811, WT 206207), European Research Council (ERC; 293549) and US National Institutes of Mental Health (NIMH) Caltech Conte Center (P50MH094258). For the purpose of Open Access, the authors have applied a CC BY public copyright licence to any Author Accepted Manuscript version arising from this submission. The authors have declared no competing interest.
Funding AgencyGrant Number
Wellcome TrustWT095495
Wellcome TrustWT204811
Wellcome TrustWT206207
European Research Council (ERC)293549
Record Number:CaltechAUTHORS:20230316-182264000.23
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:120140
Deposited By: George Porter
Deposited On:22 Mar 2023 00:22
Last Modified:22 Mar 2023 00:22

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