Propensity for risk taking and trait impulsivity in the Iowa Gambling Task.

Propensity for risk taking and trait impulsivity in the Iowa Gambling Task.
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在爱荷华州赌博任务中冒险和冲动的风险倾向。

DOI:
10.1016/j.paid.2010.11.013
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发表时间:
2011-04-01
影响因子:
4.3
通讯作者:
Stout, Julie C.
Stout, Julie C.
中科院分区:
心理学3区
文献类型:
--
作者:
Upton, Daniel J.;Bishara, Anthony J.;Ahn, Woo-Young;Stout, Julie C.

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爱荷华州赌博任务(IGT)是敏感的决策障碍,在几个临床组额叶损伤。然而,IGT的复杂性,特别是在其学习要求方面,使得很难知道在这项任务中的不利(风险)选择是否反映了故意冒险或未能认识到风险。为了确定风险承担倾向是否有助于IGT的表现,我们将IGT选择与气球锚风险任务(BART)的风险承担倾向相关联,考虑到IGT学习要求的潜在调节作用,以及与学习困难相关的特质冲动性。我们发现IGT和BART表现是相关的,但仅在IGT的后期阶段,并且仅在低特质冲动的参与者中。这一发现表明,IGT的表现可能反映了不同的潜在过程中的个人与低和高特质冲动。在低特质冲动的个体中,IGT中的风险选择似乎部分反映了寻求风险的倾向,但只有在经过一段时间的学习后,IGT风险的明确知识的发展。
The Iowa Gambling Task (IGT) is sensitive to decision making impairments in several clinical groups with frontal impairment. However the complexity of the IGT, particularly in terms of its learning requirements, makes it difficult to know whether disadvantageous (risky) selections in this task reflect deliberate risk taking or a failure to recognise risk. To determine whether propensity for risk taking contributes to IGT performance, we correlated IGT selections with a measure of propensity for risk taking from the Balloon Analogue Risk Task (BART), taking into account potential moderating effects of IGT learning requirements, and trait impulsivity, which is associated with learning difficulties. We found that IGT and BART performance were related, but only in the later stages of the IGT, and only in participants with low trait impulsivity. This finding suggests that IGT performance may reflect different underlying processes in individuals with low and high trait impulsivity. In individuals with low trait impulsivity, it appears that risky selections in the IGT reflect in part, propensity for risk seeking, but only after the development of explicit knowledge of IGT risks after a period of learning.
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