PDF(Pubmed)
Abstract：
This study investigates whether a not informative, irrelevant emotional reaction of disgust interferes with decision-making under uncertainty. We manipulate the Iowa Gambling Task (IGT) by associating a disgust-eliciting image with selections from Disadvantageous/Bad decks (Congruent condition) or Advantageous/Good decks (Incongruent condition). A Control condition without manipulations is also included. Results indicate an increased probability of selecting from a Good deck as the task unfolds in all conditions. However, this effect is modulated by the experimental manipulation. Specifically, we detect a detrimental effect (i.e., a significant decrease in the intercept) of the disgust-eliciting image in Incongruent condition (vs. Control), but this effect is limited to the early stages of the task (i.e., first twenty trials). No differences in performance trends are detected between Congruent and Control conditions. Anticipatory Skin Conductance Response, heart rate, and pupil dilation are also assessed as indexes of anticipatory autonomic activation following the Somatic Marker Hypothesis, but no effects are shown for the first two indexes in any of the conditions. Only a decreasing trend is detected for pupil dilation as the task unfolds in Control and Incongruent conditions. Results are discussed in line with the \"risk as feelings\" framework, the Somatic Marker Hypothesis, and IGT literature.
摘要：
这项研究调查了一个不提供信息的，厌恶的不相关情绪反应会干扰不确定性下的决策。我们通过将令人厌恶的图像与不利/不良套牌（一致条件）或有利/良好套牌（不一致条件）的选择相关联来操纵爱荷华州赌博任务（IGT）。还包括没有操作的控制条件。结果表明，随着任务在所有条件下展开，从良好甲板中进行选择的可能性增加。然而,这种效果是通过实验操作来调节的。具体来说,我们检测到有害影响(即，截距显着降低)在不一致条件下产生厌恶的图像(vs.Control),但这种影响仅限于任务的早期阶段(即，前二十次试验)。在一致性和对照条件之间没有检测到性能趋势的差异。预期皮肤传导反应，心率,根据体细胞标记假说，瞳孔扩张也被评估为预期自主神经激活的指标，但在任何条件下，前两个指数都没有显示出影响。当任务在控制和不一致条件下展开时，仅检测到瞳孔扩张的下降趋势。根据“风险即感觉”框架讨论结果，体细胞标记假说，和IGT文学。
