Confidence was better than predicted if we assumed all the variability disrupting metacognition would be passed on to the next re-evaluation: relative performance could improve from one re-evaluation to the next.
More details in the manuscript: https://academic.oup.com/nc/article/2022/1/niac014/6761526#.Y2Fl1I8D6c0.twitter
This is not just a party trick. We can use nested cognition to better understand metacognition. For example, we show confidence in this context must rely on a fine-grained representation of the perceptual decision-evidence, compared to discrete bins.