Working memory in the processing of the Iowa Gambling Task: an individual differences approach.

Working memory in the processing of the Iowa Gambling Task: an individual differences approach.
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DOI:
10.1371/journal.pone.0081498
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Roulin JL
Roulin JL
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Bagneux V;Thomassin N;Gonthier C;Roulin JL

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爱荷华州赌博任务(IGT)是一个连续的学习任务,在这个任务中,参与者发展出一种倾向,倾向于从与他们先前的决定相关的结果中产生有利的选择。工作记忆在这项复杂任务中的作用在文献中引起了很大争议。一方面,低工作记忆资源导致有利决策的数量减少,并使相当一部分参与者无法明确报告哪些选项是最有利可图的。另一方面,一些研究表明工作记忆对IGT决策模式没有贡献。为了研究这种明显的不相容性,我们使用了个体差异的方法,这已被证明是一种有效的方法来研究工作记忆在认知中的作用。我们比较了IGT决策模式的参与者作为他们的工作记忆容量(WMC)的函数。正如预期的那样,与低WMC参与者相反,高WMC参与者倾向于做出有利的决策。这些发现使我们讨论WMC在决策任务中的作用。
The Iowa Gambling Task (IGT) is a sequential learning task in which participants develop a tendency towards advantageous options arising from the outcomes associated with their previous decisions. The role of working memory in this complex task has been largely debated in the literature. On one hand, low working memory resources lead to a decrease in the number of advantageous decisions and make a significant part of participants unable to report explicitly which options are the most profitable. On the other hand, several studies have shown no contribution of working memory to the IGT decision patterns. In order to investigate this apparent incompatibility of results, we used an individual differences approach, which has proven an effective method to investigate the role of working memory in cognition. We compared the IGT decision patterns of participants as a function of their working memory capacity (WMC). As expected, contrary to low WMC participants, high WMC participants developed a tendency towards advantageous decisions. These findings lead us to discuss the role of WMC in decision making tasks.
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