论文标题
两球埃尔斯伯格悖论：一个实验
A Two-Ball Ellsberg Paradox: An Experiment
论文作者
论文摘要
我们对全国代表性的美国样本\\（n = 708）进行了激励实验，以测试人们是否喜欢避免歧义，即使这意味着选择主导的选择。与文献相反，我们发现55 \％的受试者更喜欢冒险行为，而不是歧义行为，而这总是提供更大的获胜可能性。我们的实验设计表明，这种偏好并不主要是由于缺乏理解。我们得出的结论是，受试者避免了歧义\ textit {se}，而不是避免歧义，因为它可能会产生更糟糕的结果。这种行为不能以直接的方式与现有的歧义厌恶模型进行调解。
We conduct an incentivized experiment on a nationally representative US sample \\ (N=708) to test whether people prefer to avoid ambiguity even when it means choosing dominated options. In contrast to the literature, we find that 55\% of subjects prefer a risky act to an ambiguous act that always provides a larger probability of winning. Our experimental design shows that such a preference is not mainly due to a lack of understanding. We conclude that subjects avoid ambiguity \textit{per se} rather than avoiding ambiguity because it may yield a worse outcome. Such behavior cannot be reconciled with existing models of ambiguity aversion in a straightforward manner.
