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KMID : 0605720070130020190
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Journal of the Korean Society of Biological Therapies in Psychiatry
2007 Volume.13 No. 2 p.190 ~ p.198
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The Assessment of Decision-Making in Young Adults Using Iowa Gambling Task and Game of Dice Task
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Lee Yang-Hyun
Cho Hyun-Jin
Kim Yang-Tae
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Abstract
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Objectives: Decision-making ability is one of the most important human functions to maintain everyday life. Two commonly used decision-making tools, the Iowa Gambling Task(IGT) and the Game of Dice Task(GDT) has been drawing attention because two tasks may reflect distinctive aspects of decision-making；the IGT for affective and the GDT for cognitive aspect of decision-making. This study examined the demographic and neuropsychological factors affecting the performance of the IGT and the GDT and any relationship between the two tasks.
Methods: Eighty seven healthy young adults(female=41) underwent intelligence test, computerized versions of the IGT, the GDT and the Wisconsin Card Sorting Test(WCST).
Results: The performances on both tasks had no relationships with sex, intelligence, and working memory. There was a significant yet moderate correlation between emotional decision-making tested by the IGT and cognitive decision-making by the GDT. In a subanalysis dividing subjects into‘non-impaired’ and‘impaired’ group according to the performance on the IGT, subjects in impaired group were more likely to make riskier choices than those in non-impaired group were.
Conclusion: These results suggest that both decision-making tasks are relatively independent to sex, intelligence and working memory, and common factors shared by both tasks should be considered when it comes to interpret the performance on the IGT and the GDT together. The reason for this correlation between two decisionmaking tasks was explained by the perspectives of risk taking, hypersensitivity to rewards, and impulsivity.
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KEYWORD
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Decision-making, Iowa gambling task, Game of dice task
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