The Dunning–Kruger Effect refers to a common failure of metacognitive insight in which people who are incompetent in a given domain are unaware of their incompetence. This effect has been found in a wide range of tasks, raising the question of whether there is any ‘special’ domain in which it is not found. One plausible candidate is face perception, which has sometimes been thought to be ‘special’. To test this possibility, we assessed participants' insight into their own face perception abilities (self-estimates) and those of other people (peer estimates). We found classic Dunning–Kruger Effects in matching tasks for unfamiliar identity, familiar identity, gaze direction, and emotional expression. Low performers overestimated themselves, and high performers underestimated themselves. Interestingly, participants' self-estimates were more stable across tasks than their actual performance. In addition, peer estimates revealed a consistent egocentric bias. High performers attributed higher accuracy to other people than did low performers. We conclude that metacognitive insight into face perception abilities is limited and subject to systematic biases. Our findings urge caution when interpreting self-report measures of face perception ability. They also reveal a fundamental source of uncertainty in social interactions.

邓宁-克鲁格效应是指元认知洞察力的普遍失败，即在给定领域中不称职的人不知道自己的不称职。已经在各种各样的任务中发现了这种效果，这引发了一个问题，即是否存在未在其中找到“特殊”域的问题。一个可能的候选者是面部感知，有时被认为是“特殊”的。为了测试这种可能性，我们评估了参与者对自己的面部感知能力（自我估计）和其他人的感知能力（同伴估计）的洞察力。我们在匹配任务中发现了经典的邓宁-克鲁格效应，以应对陌生的身份，熟悉的身份，注视方向和情感表达。低绩效者高估了自己，高绩效者低估了自己。有趣的是，参与者 各项任务的自我评估比实际绩效更稳定。此外，同行的估计显示出一致的自我中心偏见。高绩效者比低绩效者将更高的准确性归因于其他人。我们得出的结论是，对人脸感知能力的元认知洞察力是有限的，并且会受到系统性偏见的影响。我们的发现在解释面部表情能力的自我报告指标时应谨慎行事。它们还揭示了社会互动中不确定性的根本原因。我们的研究结果在解释面部表情能力的自我报告指标时应谨慎行事。它们还揭示了社会互动中不确定性的根本原因。我们的研究结果在解释面部表情能力的自我报告指标时应谨慎行事。它们还揭示了社会互动中不确定性的根本原因。