歧义表情指传递歧义效价信息的面部表情,如惊讶表情。在背景信息不明确时,惊讶表情的效价出现歧义,个体的判断出现不同的效价偏向。本文首先从行为反应、脑部反应、面部反应和年龄反应等方面综述了判断歧义表情时的个体差异,随后从初始负性假设角度分析了个体做出不同效价判断的原因,最后提出存在的问题并进行展望。 Ambiguous expressions refer to facial expressions that convey ambiguous potency information, such as astonished expressions. When the background information is not clear, surprised the expression of the potency of ambiguity, the individual’s judgment appears different potency bias. In this paper, we first summarize the individual differences in judging ambiguous expressions from the aspects of behavioral response, brain response, facial response and age response, then analyze the reasons why individuals make different potency judgments from the perspective of initial negative assumption, and finally propose the existence of Problems and prospects.