Short waits are pervasive in modern life. This study addressed how risk impacts intertemporal decisions that involve short waits (of 72 s or less) and how those decisions change while waiting. We used an experience time-discounting task sensitive to the impact of risk and which can measure intratrial preference reversals. Three experiments showed that (1) adding uncertainty to outcomes does not change participants' preferences in waiting for a reward, but it reduces their willingness in waiting for a reduction of losses; (2) adding uncertainty to outcomes increases participants' tendency to switch their decisions during the course of waiting; and (3) participants showed no gain–loss asymmetry for risky intertemporal choices.

中文翻译：

---

检查风险在等待偏好和动态偏好逆转中的作用：一项跨期选择经验研究

短暂的等待在现代生活中无处不在。本研究探讨了风险如何影响涉及短暂等待（72 秒或更短时间）的跨期决策，以及这些决策在等待期间如何变化。我们使用了一项对风险影响敏感的体验时间折扣任务，该任务可以衡量试验内的偏好逆转。三个实验表明：（1）在结果中增加不确定性不会改变参与者等待奖励的偏好，但会降低他们等待损失减少的意愿；(2) 增加结果的不确定性会增加参与者在等待过程中改变决定的倾向；(3) 参与者没有表现出风险跨期选择的收益-损失不对称性。