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Value-based attentional capture affects multi-alternative decision making

Gluth, Sebastian and Spektor, Mikhail S. and Rieskamp, Joerg. (2018) Value-based attentional capture affects multi-alternative decision making. eLife, 7 (e39659). pp. 1-36.

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Official URL: https://edoc.unibas.ch/66821/

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Abstract

Humans and other animals often violate economic principles when choosing between multiple alternatives, but the underlying neurocognitive mechanisms remain elusive. A robust finding is that adding a third option can alter the relative preference for the original alternatives, but studies disagree on whether the third option's value decreases or increases accuracy. To shed light on this controversy, we used and extended the paradigm of one study reporting a positive effect. However, our four experiments with 147 human participants and a reanalysis of the original data revealed that the positive effect is neither replicable nor reproducible. In contrast, our behavioral and eye-tracking results are best explained by assuming that the third option's value captures attention and thereby impedes accuracy. We propose a computational model that accounts for the complex interplay of value, attention, and choice. Our theory explains how choice sets and environments influence the neurocognitive processes of multi-alternative decision making.
Faculties and Departments:07 Faculty of Psychology > Departement Psychologie > Forschungsbereich Sozial-, Wirtschafts- und Entscheidungspsychologie > Decision Neuroscience (Gluth)
07 Faculty of Psychology > Departement Psychologie > Forschungsbereich Sozial-, Wirtschafts- und Entscheidungspsychologie > Economic Psychology (Rieskamp)
UniBasel Contributors:Spektor, Mikhail Sergeevic and Gluth, Sebastian and Rieskamp, Jörg
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:eLife Sciences Publications
ISSN:2050-084X
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:12 Dec 2018 16:01
Deposited On:12 Dec 2018 16:01

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