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Among neurotypical adults, errors made with high confidence (i.e. errors a person strongly believed they would not make) are corrected more reliably than errors made with low confidence. This ‘hypercorrection effect’ is thought to result from enhanced attention to information that reflects a ‘metacognitive mismatch’ between one’s beliefs and reality. In Experiment 1, we employed a standard measure of this effect. Participants answered general knowledge questions and provided confidence judgements about how likely each answer was to be correct, after which feedback was given. Finally, participants were retested on all questions answered incorrectly during the initial phase. Mindreading ability and autism spectrum disorder–like traits were measured. We found that a representative sample of (n = 83) neurotypical participants made accurate confidence judgements (reflecting good metacognition) and showed …