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Reposted by Hélène Van Marcke

Kobe Desender @kobedesender.bsky.social · 29/09/2026

"Trial-by-trial fluctuations in decision criterion shape confidence"! Now out in @nathumbehav.nature.com led by Robin Vloeberghs, Lara Navarette, @anne-urai.bsky.social and me. PDF: desenderlab.com/wp-content/u... Fluctuating Thread ↓↓↓

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Reposted by Hélène Van Marcke

Kobe Desender @kobedesender.bsky.social · 30/09/2026

"A single evidence accumulation process informs perceptual choices and subsequent confidence reports"! Reviewed Preprint at @elife.bsky.social led by @johnpgrogan1.bsky.social , @lucvermeylen.bsky.social, @redmondoconnell.bsky.social, and others PDF: elifesciences.org/reviewed-pre... Thread ↓↓↓

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Reposted by Hélène Van Marcke

Kobe Desender @kobedesender.bsky.social · 29/09/2026

"Adaptive Regulation of Confidence Following Metacognitive Conflict: Evidence From Behavior and Computational Modeling"! Now out in #JEPGeneral led by @jintaoxing.bsky.social @stefherregods.bsky.social @lucvermeylen.bsky.social and me. PDF: desenderlab.com/wp-content/u.... "Conflicting" Thread ↓↓↓

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Reposted by Hélène Van Marcke

Laboratory of Biological Psychology @biopsylbp.bsky.social · 09/11/2025

There is always a bit of time for fun! Last week we had a LBP social event with a customised quiz about our colleagues and faculty, pizza and..

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Reposted by Hélène Van Marcke

Kobe Desender @kobedesender.bsky.social · 04/11/2025

Brace yourself: neural and computational insights into the experience of mental effort! Now out in @cerebralcortex.bsky.social Led by Gaia Corlazzoli. Paper: desenderlab.com/wp-content/u.... Thread ↓↓↓

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Reposted by Hélène Van Marcke

Kobe Desender @kobedesender.bsky.social · 29/10/2025

"How disconfirmatory evidence shapes confidence in decision-making"! Now out in @commspsychol.nature.com w @annikaboldt.bsky.social & Yishu Sun Paper: www.nature.com/articles/s44... Thread ↓↓↓ #PsychSciSky #Neuroscience #Neuroskyence #Metacognition #Confidence

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Reposted by Hélène Van Marcke

Kobe Desender @kobedesender.bsky.social · 25/09/2025

"Learning to be confident: How agents learn confidence based on prediction errors"! Now out in @cognitionjournal.bsky.social led by @pierreledenmat.bsky.social Paper: desenderlab.com/wp-content/u... Thread ↓↓↓ #AcademicSky #PsychSciSky #Neuroscience #Neuroskyence

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Reposted by Hélène Van Marcke

Kobe Desender @kobedesender.bsky.social · 25/09/2025

Introducing hMFC: A Bayesian hierarchical model of trial-to-trial fluctuations in decision criterion! Now out in @plos.org Comp Bio. led by Robin Vloeberghs with @anne-urai.bsky.social Scott Linderman Paper: desenderlab.com/wp-content/u... Thread ↓↓↓ #PsychSciSky #Neuroscience #Neuroskyence

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Reposted by Hélène Van Marcke

Kobe Desender @kobedesender.bsky.social · 19/09/2025

Common neural choice signals reflect accumulated evidence, not confidence! Now out in @cerebralcortex.bsky.social w @helenevanmarcke.bsky.social @pierreledenmat.bsky.social @yfvisser.bsky.social @denizerdil.bsky.social a.o. Paper: desenderlab.com/wp-content/u... Thread ↓↓↓

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Hélène Van Marcke @helenevanmarcke.bsky.social · 08/09/2025

So, you know these "Read full article before sharing"-prompts? Yeah, not as effective as you would think! 🤔 But to hear our two cents on why this is the case and what you should do instead, you will have to (how ironic!) read the full article 🤓 (6/6)

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Hélène Van Marcke @helenevanmarcke.bsky.social · 08/09/2025

‼️Issue 2: info seeking for fake news **did not** increase accurate fake news detection: participants remain no better than chance at detecting fake news! (5/6)

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Hélène Van Marcke @helenevanmarcke.bsky.social · 08/09/2025

We find that confidence indeed drives info seeking (1️⃣, plot B) and confirmation biases (3️⃣), yet we identify two crucial issues. ❗Issue 1: confidence for fake news items does not reliably reflect accuracy (plot C), thus failing to drive information seeking towards the least accurate items. (4/6)

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Hélène Van Marcke @helenevanmarcke.bsky.social · 08/09/2025

Here, we tested whether these 3 principles hold in the context of fake news: 314 American adults rated news headlines' veracity, gave their confidence and could decide to seek additional info (A). When seeking info, they were presented the full news article before finalising their decision (B).(3/6)

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Hélène Van Marcke @helenevanmarcke.bsky.social · 08/09/2025

Fake news is on the rise, so how can we make people better at detecting it? Well, perceptual decision making research would tell us to simply encourage information seeking; which is 1️⃣driven by confidence, 2️⃣improves decision accuracy, 3️⃣cooccurs with confidence-driven confirmation biases. (2/6)

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Hélène Van Marcke @helenevanmarcke.bsky.social · 08/09/2025

Warning: this is *not* fake news! New preprint out w/ S. Kunkle & @kobedesender.bsky.social on how confidence-driven information seeking is suboptimal in the context of fake news 📰🔍🧵 (1/6): osf.io/preprints/ps...

osf.io

OSF

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Reposted by Hélène Van Marcke

Kobe Desender @kobedesender.bsky.social · 11/08/2025

Full-Force at #ccn2025 in Amsterdam. Come along for a chat if you're interested in metacognition, confidence, computational modelling, reasoning, etc. @yfvisser.bsky.social @jeremiebeucler.bsky.social @helenevanmarcke.bsky.social @alexandre-lietard.bsky.social @zoepurcell.bsky.social

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Hélène Van Marcke @helenevanmarcke.bsky.social · 16/06/2025

Our findings suggest a less simple link between confidence and information seeking as previously thought, suggesting that confidence and information seeking are separately driven by beliefs about past performance versus perceived difficulty. 💭 Read all about it in our paper! (7/7)

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Hélène Van Marcke @helenevanmarcke.bsky.social · 16/06/2025

In Exp.2, participants were only trained on one difficulty level (easy/hard) and experienced a sudden in-/decrease in trial difficulty in the testing phase, directly leading to an in-/decrease in overall information seeking to maintain performance. (6/7)

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Hélène Van Marcke @helenevanmarcke.bsky.social · 16/06/2025

To explain this unexpected dissociation, we point towards the differences in training difficulty between experiments. In Exp.1, participants were trained on all difficulty levels, with no unexpected change in difficulty in the testing phase. Thus, info seeking was not directly affected. (5/7)

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Hélène Van Marcke @helenevanmarcke.bsky.social · 16/06/2025

However, in Exp.2, an easy/hard training also induced over/underconfidence but respectively INcreased/DEcreased overall info seeking, an effect that was unmediated by confidence. At the trial level, info seeking was still driven by trial-level confidence. (4/7)

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Hélène Van Marcke @helenevanmarcke.bsky.social · 16/06/2025

Strikingly, we found a dissociation between the type of confidence manipulation and the effect on information seeking. In Exp.1, positive/negative comparative feedback induced over/underconfidence and resp. decreased/increased info seeking, through a full mediation by trial-level confidence. (3/7)

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Hélène Van Marcke @helenevanmarcke.bsky.social · 16/06/2025

Decision confidence is known to drive information seeking, but what happens when confidence is causally manipulated? In two experiments, we induced under- and overconfidence through a comparative feedback (Exp.1) or a training difficulty manipulation (Exp.2) and looked at information-seeking. (2/7)

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Hélène Van Marcke @helenevanmarcke.bsky.social · 16/06/2025

Happy to share my latest work with @kobedesender.bsky.social on the context-dependent role of confidence in information-seeking 🔍now out in @cognitionjournal.bsky.social -- authors.elsevier.com/a/1lGLb2Hx2-... 🧵⬇️ (1/7)

authors.elsevier.com

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Reposted by Hélène Van Marcke

Kobe Desender @kobedesender.bsky.social · 19/03/2025

PhD position in cognitive computational neuroscience! Join us, & investigate how we can endow domain-specific models of vision (eg DNNs) with domain-general processes such as metacognition or working memory. All details => www.kuleuven.be/personeel/jo... #PsychSciSky #Neuroscience #Neuroskyence

kuleuven.be

PhD position in cognitive computational neuroscience

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