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Behavioral contagion during learning about another agent’s risk-preferences acts on the neural representation of decision-risk

Suzuki, Shinsuke and Jensen, Emily L. S. and Bossaerts, Peter and O'Doherty, John P. (2016) Behavioral contagion during learning about another agent’s risk-preferences acts on the neural representation of decision-risk. Proceedings of the National Academy of Sciences of the United States of America, 113 (14). pp. 3755-3760. ISSN 0027-8424. PMCID PMC4833238. https://resolver.caltech.edu/CaltechAUTHORS:20160323-104415034

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Abstract

Our attitude toward risk plays a crucial role in influencing our everyday decision-making. Despite its importance, little is known about how human risk-preference can be modulated by observing risky behavior in other agents at either the behavioral or the neural level. Using fMRI combined with computational modeling of behavioral data, we show that human risk-preference can be systematically altered by the act of observing and learning from others’ risk-related decisions. The contagion is driven specifically by brain regions involved in the assessment of risk: the behavioral shift is implemented via a neural representation of risk in the caudate nucleus, whereas the representations of other decision-related variables such as expected value are not affected. Furthermore, we uncover neural computations underlying learning about others’ risk-preferences and describe how these signals interact with the neural representation of risk in the caudate. Updating of the belief about others’ preferences is associated with neural activity in the dorsolateral prefrontal cortex (dlPFC). Functional coupling between the dlPFC and the caudate correlates with the degree of susceptibility to the contagion effect, suggesting that a frontal–subcortical loop, the so-called dorsolateral prefrontal–striatal circuit, underlies the modulation of risk-preference. Taken together, these findings provide a mechanistic account for how observation of others’ risky behavior can modulate an individual’s own risk-preference.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1073/pnas.1600092113DOIArticle
http://www.pnas.org/lookup/suppl/doi:10.1073/pnas.1600092113/-/DCSupplementalPublisherSupporting Information
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4833238/PubMed CentralArticle
https://doi.org/10.1073/pnas.1708546114DOICorrection
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5495292/PubMed CentralCorrection
ORCID:
AuthorORCID
Suzuki, Shinsuke0000-0002-9816-9423
Bossaerts, Peter0000-0003-2308-2603
Additional Information:© 2016 National Academy of Sciences. Edited by Ranulfo Romo, Universidad Nacional Autonóma de México, Mexico City, Distrito Federal, Mexico, and approved February 23, 2016 (received for review January 7, 2016). Published online before print March 21, 2016. We thank Simon Dunne and Keise Izuma for helpful comments on the manuscript. This work was supported by the Japan Society for the Promotion of Science (JSPS) Postdoctoral Fellowship for Research Abroad (S.S.) and the National Institute of Mental Health (NIMH) Caltech Conte Center for the Neurobiology of Social Decision Making (J.P.O.). Author contributions: S.S., E.L.S.J., P.B., and J.P.O. designed research; S.S. and E.L.S.J. performed research; S.S., E.L.S.J., and J.P.O. analyzed data; and S.S., P.B., and J.P.O. wrote the paper. The authors declare no conflict of interest. This article is a PNAS Direct Submission. This article contains supporting information online at www.pnas.org/lookup/suppl/doi:10.1073/pnas.1600092113/-/DCSupplemental.
Errata:Correction to Supporting Information for “Behavioral contagion during learning about another agent’s risk-preferences acts on the neural representation of decision-risk,” by Shinsuke Suzuki, Emily L. S. Jensen, Peter Bossaerts, and John P. O’Doherty, which appeared in issue 14, April 5, 2016, of Proc Natl Acad Sci USA (113:3755–3760; first published March 21, 2016; 10.1073/pnas.1600092113). The authors wish to note the following: “We have noticed an error in the description of the fMRI analysis on page 2 of Supporting Information (right column, second full paragraph, lines 2–3), under the paragraph heading ‘GLM I.’ In the original version of Supporting Information, the parametric regressor representing risk was described as the ‘variance of reward,’ whereas the accurate description of the regressor that was used in the analysis is the ‘standard deviation of reward.’” The SI has been corrected online.
Funders:
Funding AgencyGrant Number
Japan Society for the Promotion of Science (JSPS)UNSPECIFIED
National Institute of Mental Health (NIMH)UNSPECIFIED
NIHUNSPECIFIED
Subject Keywords:risk; caudate; decision-making; conformity; neuroeconomics
Issue or Number:14
PubMed Central ID:PMC4833238
Record Number:CaltechAUTHORS:20160323-104415034
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20160323-104415034
Official Citation:Shinsuke Suzuki, Emily L. S. Jensen, Peter Bossaerts, and John P. O’Doherty Behavioral contagion during learning about another agent’s risk-preferences acts on the neural representation of decision-risk PNAS 2016 113 (14) 3755-3760; published ahead of print March 21, 2016, doi:10.1073/pnas.1600092113
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:65619
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:25 Mar 2016 17:47
Last Modified:03 Oct 2019 09:49

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