Decisions under ambiguity and decisions under risk: Correlations with executive functions and comparisons of two different gambling tasks with implicit and explicit rules
Decisions under ambiguity and decisions under risk: Correlations with executive functions and comparisons of two different gambling tasks with implicit and explicit rules
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DOI：
10.1080/13803390500507196
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发表时间：
2007-01-01
影响因子：
2.2
通讯作者：
Bechara, Antoine
中科院分区：
文献类型：
--
作者：
Brand, Matthias;Recknor, Emily C.;Bechara, Antoine
我们对健康受试者进行了两项实验，以研究爱荷华州赌博任务 (IGT) 表现与执行功能之间的可能关系，以及在具有明确规则的任务（骰子游戏任务 (GDT)）中 IGT 表现与决策制定之间的可能关系。结果表明，只有最后的 IGT 试验与执行功能和 GDT 表现相关。我们建议 IGT 利用两种决策机制：第一次试验中的模糊决策和后面的试验中的风险决策。结果对额叶功能障碍患者 IGT 表现缺陷的解释有影响。
We conducted two experiments with healthy subjects to investigate the possible relationships between Iowa Gambling Task (IGT) performance and executive functions as well as IGT performance and decision-making in a task with explicit rules, the Game of Dice Task (GDT). Results indicated that only the last trials of the IGT were correlated with executive functions and GDT performance. We suggest that the IGT taps into two mechanisms of decision-making: decisions under ambiguity in the first trials and decisions under risk in the latter trials. Results have impact on the interpretation of deficient IGT performance in patients with frontal lobe dysfunctions.