Confidence in value-based choice

de Martino, Benedetto, Fleming, Stephen M., Garrett, Neil ORCID: and Dolan, Raymond J. (2013) Confidence in value-based choice. Nature Neuroscience, 16 (1). pp. 105-110. ISSN 1097-6256

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Decisions are never perfect, with confidence in one’s choices fluctuating over time. How subjective confidence and valuation of choice options interact at the level of brain and behavior is unknown. Using a dynamic model of the decision process, we show that confidence reflects the evolution of a decision variable over time, explaining the observed relation between confidence, value, accuracy and reaction time. As predicted by our dynamic model, we show that a functional magnetic resonance imaging signal in human ventromedial prefrontal cortex (vmPFC) reflects both value comparison and confidence in the value comparison process. Crucially, individuals varied in how they related confidence to accuracy, allowing us to show that this introspective ability is predicted by a measure of functional connectivity between vmPFC and rostrolateral prefrontal cortex. Our findings provide a mechanistic link between noise in value comparison and metacognitive awareness of choice, enabling us both to want and to express knowledge of what we want.

Item Type: Article
Faculty \ School: Faculty of Social Sciences > School of Psychology
UEA Research Groups: Faculty of Social Sciences > Research Groups > Cognition, Action and Perception
Faculty of Social Sciences > Research Groups > Social Cognition Research Group
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Depositing User: LivePure Connector
Date Deposited: 09 Oct 2021 01:03
Last Modified: 22 Oct 2022 14:30
DOI: 10.1038/nn.3279

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