Document Detail

Neural correlates of belief-bias reasoning under time pressure: a near-infrared spectroscopy study.
MedLine Citation:
PMID:  20080190     Owner:  NLM     Status:  MEDLINE    
The dual-process theory of reasoning explained the belief-bias effect, the tendency for human reasoning to be erroneously biased when logical conclusions are incongruent with belief about the world, by proposing a belief-based fast heuristic system and a logic-based slow analytic system. Although the claims were supported by behavioral findings that the belief-bias effect was enhanced when subjects were not given sufficient time for reasoning, the neural correlates were still unknown. The present study therefore examined the relationship between the time-pressure effect and activity in the inferior frontal cortex (IFC) during belief-bias reasoning using near-infrared spectroscopy (NIRS). Forty-eight subjects performed congruent and incongruent reasoning tasks, involving long-span (20 s) and short-span trials (10 s). Behavioral analysis found that only incongruent reasoning performance was impaired by the time-pressure of short-span trials. NIRS analysis found that the time-pressure decreased right IFC activity during incongruent trials. Correlation analysis showed that subjects with enhanced right IFC activity could perform better in incongruent trials, while subjects for whom the right IFC activity was impaired by the time-pressure could not maintain better reasoning performance. These findings suggest that the right IFC may be responsible for the time-pressure effect in conflicting reasoning processes. When the right IFC activity was impaired in the short-span trials in which subjects were not given sufficient time for reasoning, the subjects may rely on the fast heuristic system, which result in belief-bias responses. We therefore offer the first demonstration of neural correlates of time-pressure effect on the IFC activity in belief-bias reasoning.
Takeo Tsujii; Shigeru Watanabe
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-01-18
Journal Detail:
Title:  NeuroImage     Volume:  50     ISSN:  1095-9572     ISO Abbreviation:  Neuroimage     Publication Date:  2010 Apr 
Date Detail:
Created Date:  2010-03-01     Completed Date:  2010-06-08     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9215515     Medline TA:  Neuroimage     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1320-6     Citation Subset:  IM    
Copyright Information:
Copyright 2009 Elsevier Inc. All rights reserved.
Center for Advanced Research on Logic and Sensibility (CARLS), Keio University, Tokyo, Japan.
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MeSH Terms
Brain / physiopathology*
Frontal Lobe / physiology
Functional Laterality
Models, Psychological
Neuropsychological Tests
Spectroscopy, Near-Infrared
Stress, Psychological / physiopathology*
Thinking / physiology*
Time Factors
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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