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Kai Xue

@kaixue98.bsky.social
42 followers 47 following 7 posts

Perception, metacognition, decision making, and confidence modeling.

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Reposted by Kai Xue
Communications Psychology @commspsychol.nature.com · 21/05/2026
www.nature.com/articles/s44... New research Article by @dobyrahnev.bsky.social ahnev.bsky.social & @kaixue98.bsky.social in the journal.
nature.com
Type-1 and type-2 decisions feature computational noise of similar magnitude - Communications Psychology
Zheng et al. show that confidence (Type-2) judgments feature the same magnitude of computational noise as perceptual (Type-1) judgments, with important implications for the debate on whether Type-1 an...
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Reposted by Kai Xue
Doby Rahnev @dobyrahnev.bsky.social · 30/04/2026
What does it mean for cognition to be Bayesian? The view that cognition is Bayesian inference is often intended at Marr's computational level. In a new paper in Nat Rev Psych, @kaixue98.bsky.social and I formulate the "explicit-Bayes" hypothesis that lives at the algorithmic level. rdcu.be/ff1XA
rdcu.be
The explicit-Bayes hypothesis for cognition
Nature Reviews Psychology - It is often asserted that human cognition is Bayesian, but that broad claim is difficult to test in a falsifiable way. We suggest that researchers specifically assess a...
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Kai Xue @kaixue98.bsky.social · 25/02/2026
Importantly, ANNs trained on the same task showed folded-X patterns for both manipulations — suggesting the human double-increase pattern reflects metacognitive mechanisms beyond the statistical structure of the task. 4/4
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Kai Xue @kaixue98.bsky.social · 25/02/2026
Across 2 experiments (Gabor patches + dot motion), we found a clean dissociation: boundary distance → folded-X pattern (confidence up for correct, down for errors); stimulus reliability → double-increase pattern (confidence up for both correct and errors). 3/4
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Kai Xue @kaixue98.bsky.social · 25/02/2026
Two ways to manipulate task difficulty: (1) stimulus reliability (changing contrast/coherence to make the stimulus itself unclear); (2) boundary distance change tilt offset (keeping the stimulus clear but harder to categorize). 2/4
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Kai Xue @kaixue98.bsky.social · 25/02/2026
Our new paper is out in Cognition! What determines whether confidence follows the classic "folded-X" pattern vs. the "double-increase" pattern? The answer lies in the type of stimulus manipulation. Big thanks to my advisor Doby @dobyrahnev.bsky.social and co-first author @herrickfung.bsky.social !
sciencedirect.com
Stimulus reliability but not boundary distance manipulations violate the folded-X pattern of confidence
The folded-X pattern has been identified as a critical signature of confidence: as conditions become easier, confidence increases for correct trials b…
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Kai Xue @kaixue98.bsky.social · 25/02/2026
Importantly, ANNs trained on the same task showed folded-X patterns for both manipulations — suggesting the human double-increase pattern reflects metacognitive mechanisms beyond the statistical structure of the task. 4/4
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Kai Xue @kaixue98.bsky.social · 25/02/2026
Across 2 experiments (Gabor patches + dot motion), we found a clean dissociation: boundary distance → folded-X pattern (confidence up for correct, down for errors); stimulus reliability → double-increase pattern (confidence up for BOTH correct and errors). 3/4
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Kai Xue @kaixue98.bsky.social · 25/02/2026
Two ways to manipulate task difficulty: (1) stimulus reliability (changing contrast/coherence to make the stimulus itself unclear); (2) boundary distance change tilt offset (keeping the stimulus clear but harder to categorize). 2/4
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Reposted by Kai Xue
herrick fung @herrickfung.bsky.social · 12/10/2025
Huge thanks to Medha Shekhar, @kaixue98.bsky.social, @manurausch.bsky.social, & @dobyrahnev.bsky.social for their guidance and collaboration on this project. Full article: www.sciencedirect.com/science/arti... Data and code: github.com/herrickfung/... n/n
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Reposted by Kai Xue
Doby Rahnev @dobyrahnev.bsky.social · 16/01/2025
My article "A comprehensive assessment of current methods for measuring metacognition" is finally out in Nature Communications 🎉 If you work on metacognition and think you know the psychometric properties of your favorite measure, you may be surprised. www.nature.com/articles/s41...
nature.com
A comprehensive assessment of current methods for measuring metacognition - Nature Communications
Measuring metacognitive ability is one of the enduring challenges in cognitive science. The current paper develops formal tests of the quality of different measures and assesses how current metrics pe...
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Reposted by Kai Xue
Doby Rahnev @dobyrahnev.bsky.social · 30/04/2025
Great to see our research, led by @johannakuci.bsky.social, covered in The Transmitter. One of the more surprising findings to have come out of the lab.
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Reposted by Kai Xue
Samuel Recht @sam.re · 25/11/2024
"We found that, when informed about task difficulty, humans barely shift their confidence criteria." Awesome new work by Xue, Shekhar and @dobyrahnev.bsky.social questioning the Bayesian confidence hypothesis in perception: www.pnas.org/doi/abs/10.1...
pnas.org
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
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