Journal article
An fMRI Study of Risk-Taking Following Wins and Losses: Implications for the Gambler's Fallacy?
Human brain mapping, Vol.32(2), pp.271-281
02/2011
DOI: 10.1002/hbm.21015
PMCID: PMC3429350
PMID: 21229615
Abstract
Human decision-making involving independent events is often biased and affected by prior outcomes. Using a controlled task that allows us to manipulate prior outcomes, the present study examined the effect of prior outcomes on subsequent decisions in a group of young adults. We found that participants were more risk-seeking after losing a gamble (riskloss) than after winning a gamble (riskwin), a pattern resembling the gambler's fallacy. Functional MRI data revealed that decisions after riskloss were associated with increased activation in the frontoparietal network, but decreased activation in the caudate and ventral striatum. The increased risk-seeking behavior after a loss showed a trend of positive correlation with activation in the frontoparietal network and the left lateral orbitofrontal cortex but a trend of negative correlation with activation in the amgydala and caudate. In addition, there was a trend of positive correlation between feedback-related activation in the left lateral frontal cortex and subsequent increased risk-seeking behavior. These results suggest that a strong cognitive control mechanism but a weak affective decision-making and reinforcement learning mechanism that usually contribute to flexible, goal-directed decisions can lead to decision biases involving random events. This has significant implications for our understanding of the gambler's fallacy and human decision making under risk. Hum Brain Mapp 32: 271-281, 2011. (C) 2010 Wiley-Liss, Inc.
Details
- Title: Subtitle
- An fMRI Study of Risk-Taking Following Wins and Losses: Implications for the Gambler's Fallacy?
- Creators
- Gui Xue - University of Southern CaliforniaZhonglin Lu - Univ So Calif, Dept Psychol, Los Angeles, CA 90089 USAIrwin P. Levin - University of IowaAntoine Bechara - University of Southern California
- Resource Type
- Journal article
- Publication Details
- Human brain mapping, Vol.32(2), pp.271-281
- DOI
- 10.1002/hbm.21015
- PMID
- 21229615
- PMCID
- PMC3429350
- NLM abbreviation
- Hum Brain Mapp
- ISSN
- 1065-9471
- eISSN
- 1097-0193
- Publisher
- Wiley
- Number of pages
- 11
- Grant note
- R01DA012487 / NATIONAL INSTITUTE ON DRUG ABUSE; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute on Drug Abuse (NIDA); European Commission DA11779; DA12487; DA16708 / National Institute on Drug Abuse (NIDA); United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute on Drug Abuse (NIDA) IIS 04-42586; SES 03-50984 / National Science Foundation (NSF)
- Language
- English
- Date published
- 02/2011
- Academic Unit
- Marketing; Psychological and Brain Sciences
- Record Identifier
- 9984963218002771
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