Working memory involvement in emotion-based processes underlying choosing advantageously
Working memory involvement in emotion-based processes underlying choosing advantageously
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DOI：
10.1027/1618-3169.53.3.191
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发表时间：
2006-01-01
影响因子：
1.3
通讯作者：
Chapman, Paul
中科院分区：
文献类型：
--
作者：
Pecchinenda, Anna;Dretsch, Michael;Chapman, Paul
爱荷华州赌博任务(IGT)被广泛用于评估临床和非临床人群中不确定条件下的决策。然而，对于这项任务的正常表现是否依赖于独立于工作记忆的内隐、基于情绪的过程，仍然存在争议。为了阐明工作记忆对IGT正常表现的作用，参与者在工作记忆负荷低或高的情况下进行这项任务。我们使用了原始任务的修改版本，其中四个甲板的位置在试验之间随机排列。结果显示，只有在低记忆负荷下表现显著的参与者才会在任务进行到一半时做出更有利的选择。此外，当比较从两副牌中选择的牌的数量时，一个有利，一个不利，只有在低内存负载下执行任务的参与者从有利的副牌中选择了更多的牌。目前的研究结果表明，IGT的最佳有利表现背后的加工依赖于工作记忆功能。
The Iowa Gambling Task (IGT) is widely used to assess decision making under conditions of uncertainty in clinical as well as in nonclinical populations. However, there is still debate as to whether normal performance at this task relies on implicit, emotion-based processes that are independent of working memory. To clarify the role of working memory on normal performance on the IGT, participants performed the task under low or high working memory load. We used a modified version of the original task, in which the position of the four decks was randomized between trials. Results showed that only participants performing under low memory load significantly chose more advantageously halfway through the task. In addition, when comparing the number of cards chosen from the two decks with frequent losses, one advantageous and one disadvantageous, only participants performing under low memory load chose more cards from the advantageous deck. The present findings indicate that the processes underlying optimal advantageous performance on the IGT rely on working memory functions.