Emotion and decision-making under uncertainty: Physiological arousal predicts increased gambling during ambiguity but not risk.
Emotion and decision-making under uncertainty: Physiological arousal predicts increased gambling during ambiguity but not risk.
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DOI：
10.1037/xge0000205
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发表时间：
2016-10
影响因子：
4.1
通讯作者：
Phelps, Elizabeth A.
中科院分区：
文献类型：
--
作者：
FeldmanHall, Oriel;Glimcher, Paul;Baker, Augustus L.;Phelps, Elizabeth A.
不确定性在决策过程中无处不在，可分为已知概率（风险）和未知概率（模糊性）。尽管研究表明，与风险相比，人们更经常避免与模糊相关的决策，但尚不清楚为什么模糊被认为更令人厌恶。在这里，我们研究了在风险和模糊决策下，唤醒在塑造价值表征和随后选择中的作用。为了研究觉醒和不确定性决策之间的关系，我们测量了在冒险和模棱两可的情况下选择赌博时皮肤电导反应——一种反映交感神经系统觉醒的可量化测量。为了量化风险和模糊敏感性的离散影响以及考虑中的每个选项的主观价值，我们对波动的不确定性以及通过赌博可以获得的金额进行建模。结果表明，尽管唤醒跟踪彩票的主观价值，而不考虑不确定性类型，唤醒不同地有助于价值的计算，即。选择——取决于不确定性是有风险的还是模糊的：只有当彩票风险很高时，增强的唤醒才会自适应地降低风险，但当中奖概率不明确时（即使在控制了主观价值之后），会增加风险。总之，这表明在不确定的决策过程中，唤醒的作用是调节的，高度依赖于决策框架的背景。
Uncertainty, which is ubiquitous in decision-making, can be fractionated into known probabilities (risk) and unknown probabilities (ambiguity). Although research illustrates that individuals more often avoid decisions associated with ambiguity compared to risk, it remains unclear why ambiguity is perceived as more aversive. Here we examine the role of arousal in shaping the representation of value and subsequent choice under risky and ambiguous decisions. To investigate the relationship between arousal and decisions of uncertainty, we measure skin conductance response—a quantifiable measure reflecting sympathetic nervous system arousal—during choices to gamble under risk and ambiguity. To quantify the discrete influences of risk and ambiguity sensitivity and the subjective value of each option under consideration, we model fluctuating uncertainty, as well as the amount of money that can be gained by taking the gamble. Results reveal that while arousal tracks the subjective value of a lottery regardless of uncertainty type, arousal differentially contributes to the computation of value—i.e. choice—depending on whether the uncertainty is risky or ambiguous: enhanced arousal adaptively decreases risk-taking only when the lottery is highly risky but increases risk-taking when the probability of winning is ambiguous (even after controlling for subjective value). Together, this suggests that the role of arousal during decisions of uncertainty is modulatory and highly dependent on the context in which the decision is framed.
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影响因子：
8.2
作者：
BECKER, SW;BROWNSON, FO
通讯作者：
BROWNSON, FO
影响因子：
2.9
作者：
Glimcher, Paul W.
通讯作者：
Glimcher, Paul W.
DOI：
10.1016/b978-0-12-374176-9.00016-6
发表时间：
2009-01-01
期刊：
NEUROECONOMICS: DECISION MAKING AND THE BRAIN
影响因子：
--
作者：
Phelps, Elizabeth A.
通讯作者：
Phelps, Elizabeth A.
影响因子：
10.7
作者：
Holt, CA;Laury, SK
通讯作者：
Laury, SK
DOI：
10.1037/a0014983
发表时间：
2009-05-01
影响因子：
2.6
作者：
Figner, Bernd;Mackinlay, Rachael J.;Weber, Elke U.
通讯作者：
Weber, Elke U.