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Choice overload reduces neural signatures of choice set value in dorsal striatum and anterior cingulate cortex

Reutskaja, Elena and Lindner, Axel and Nagel, Rosemarie and Andersen, Richard A. and Camerer, Colin F. (2018) Choice overload reduces neural signatures of choice set value in dorsal striatum and anterior cingulate cortex. Nature Human Behaviour, 2 (12). pp. 925-935. ISSN 2397-3374. doi:10.1038/s41562-018-0440-2.

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Modern societies offer a large variety of choices, which is generally thought to be valuable. But having too much choice can be detrimental if the costs of choice outweigh its benefits due to ‘choice overload’. Current explanatory models of choice overload mainly derive from behavioural studies. A neuroscientific investigation could further inform these models by revealing the covert mental processes during decision-making. We explored choice overload using functional magnetic resonance imaging while subjects were either choosing from varying-sized choice sets or were browsing them. When choosing from sets of 6, 12 or 24 items, functional magnetic resonance imaging activity in the striatum and anterior cingulate cortex resembled an inverted U-shaped function of choice set size. Activity was highest for 12-item sets, which were perceived as having ‘the right amount’ of options and was lower for 6-item and 24-item sets, which were perceived as ‘too small’ and ‘too large’, respectively. Enhancing choice set value by adding a dominant option led to an overall increase of activity. When subjects were browsing, the decision costs were diminished and the inverted U-shaped activity patterns vanished. Activity in the striatum and anterior cingulate reflects choice set value and can serve as neural indicator of choice overload.

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URLURL TypeDescription ReadCube access
Lindner, Axel0000-0002-8201-788X
Andersen, Richard A.0000-0002-7947-0472
Camerer, Colin F.0000-0003-4049-1871
Additional Information:© 2018 Springer Nature Limited. Received: 22 January 2017; Accepted: 23 August 2018; Published online: 01 October 2018. The authors acknowledge support from the Spanish Ministry of Science and Education, grants nos. ECO2011-29865 (to E.R.), SEJ2005-08391 and ECO2008-01768 (to R.N.), the German Research Council (DFG CIN) (to A.L.), Generalitat de Catalunya, and BGSE (to R.N.), the Moore Foundation (to C.F.C. and R.A.A.), the Human Frontier Science Program (to C.F.C., R.N. and E.R.), the National Institutes of Health (Conte to C.F.C. and R.A.A.), the National Science Foundation and Boswell Foundation (to R.A.A), Caltech T&C Chen Social and Decision Neuroscience Center (to C.F.C.) and Caltech T&C Chen Brain–Machine Interface Center (to R.A.A.). The funders had no role in the conceptualization, design, data collection, analysis, decision to publish or preparation of the manuscript. The authors thank K. Quinn, A. Tank and A. Miro for help on previous versions of the manuscript. These authors contributed equally: Elena Reutskaja, Axel Lindner. Author Contributions: Design was carried out by E.R., R.N., A.L., C.F.C. and R.A.A., fMRI collection by A.L. and E.R., fMRI analysis by A.L. and E.R. and other data analysis by E.R., A.L. and R.N. All authors contributed to writing the manuscript. Data availability: The data that support the findings of this study as well as the data underlying our power calculations are available from the corresponding author upon reasonable request. Unthresholded statistical maps of our main fMRI-results are available at NeuroVault.org6 The authors declare no competing interests.
Group:Tianqiao and Chrissy Chen Institute for Neuroscience
Funding AgencyGrant Number
Ministerio de Educación y Ciencia (MEC)ECO2011-29865
Ministerio de Educación y Ciencia (MEC)SEJ2005
Ministerio de Educación y Ciencia (MEC)ECO2008-01768
Deutsche Forschungsgemeinschaft (DFG)UNSPECIFIED
Generalitat de CatalunyaUNSPECIFIED
Barcelona Graduate School of EconomicsUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Human Frontier Science ProgramUNSPECIFIED
James G. Boswell FoundationUNSPECIFIED
Tianqiao and Chrissy Chen Institute for NeuroscienceUNSPECIFIED
Issue or Number:12
Record Number:CaltechAUTHORS:20181001-113521255
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:90069
Deposited By: George Porter
Deposited On:01 Oct 2018 23:22
Last Modified:15 Mar 2022 20:53

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