The current study tests experimentally the effect of cognitive load on impulsive behavior with uncertainty choices as the time preference. Participants were 189 students, randomly assigned to two cognitive load groups (low and high), and a control group with no cognitive load manipulation. Under cognitive load participants were asked to answer a questionnaire with several time delay scenarios and participate in an impulsive behavior task. The results show that under a high cognitive load, participants are more impulsive and more present oriented than under a low cognitive load. Impulsive behavior did not mediate the two measures. Some possible explanations are discussed.

当前的研究以不确定性选择作为时间偏好，实验性地测试了认知负荷对冲动行为的影响。参加者为189名学生，随机分为两个认知负荷组（低和高）和一个没有认知负荷操纵的对照组。在认知负荷下，要求参与者回答具有几种时延情况的问卷，并参与冲动行为任务。结果表明，在高认知负荷下，与低认知负荷下相比，参与者更容易冲动，更倾向于在场。冲动行为没有调解这两种措施。讨论了一些可能的解释。