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Inventi Impact - Psychiatry & Neurology
(Formerly Inventi Rapid/Impact: Brain)

Articles

  • Inventi:hbr/86/14
    DECISION-MAKING AFTER CONTINUOUS WINS OR LOSSES IN A RANDOMIZED GUESSING TASK: IMPLICATIONS FOR HOW THE PRIOR SELECTION RESULTS AFFECT SUBSEQUENT DECISION-MAKING
    Guangheng Dong, Xiao Lin, Hongli Zhou, Xiaoxia Du

    Background: Human decision-making is often affected by prior selections and their outcomes, even in situations where decisions are independent and outcomes are unpredictable. Methods: In this study, we created a task that simulated real-life non-strategic gambling to examine the effect of prior outcomes on subsequent decisions in a group of male college students. Results: Behavioral performance showed that participants needed more time to react after continuous losses (LOSS) than continuous wins (WIN) and discontinuous outcomes (CONTROL). In addition, participants were more likely to repeat their selections in both WIN and LOSS conditions. Functional MRI data revealed that decisions in WINs were associated with increased activation in the mesolimbic pathway, but decreased activation in the inferior frontal gyrus relative to LOSS. Increased prefrontal cortical activation was observed during LOSS relative to WIN and CONTROL conditions. Conclusion: Taken together, the behavioral and neuroimaging findings suggest that participants tended to repeat previous selections during LOSS trials, a pattern resembling the gambler’s fallacy. However, during WIN trials, participants tended to follow their previous lucky decisions, like the ‘hot hand’ fallacy.

    How to Cite this Article
    CC Compliant Citation: Dong et al.: Decision-making after continuous wins or losses in a randomized guessing task: implications for how the prior selection results affect subsequent decision-making. Behavioral and Brain Functions 2014 10:11, doi:10.1186/1744-9081-10-11. © 2014 Dong et al.; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
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