Wim De Neys
@wimdeneys.bsky.social
330 followers 110 following 34 posts
Psychological scientist @ CNRS & University of Paris
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Reposted by Wim De Neys
jorgeapenas.bsky.social
📢 Apply to our (2-year) research fellowships at @iast.fr

Join a multidisciplinary, interdisciplinary, transdisciplinary, and indisciplinary group of scholars in Toulouse, walkable/cyclable pink city of chocolatines in the South of France.

Deadline: November 15, 2025.

www.iast.fr/research-fel...
Research Fellowships
Each year, IAST invites applications for post-doctoral Research Fellowships, which offer candidates an opportunity to devote themselves full-time to their research at the start of their careers. Fello...
www.iast.fr
Reposted by Wim De Neys
jfbonnefon.bsky.social
It's hiring season at @iast.fr!

- 2y research postdoc contract
- Full autonomy, you are your own PI
- Awesome multidisciplinary environment
- All social and behavioral sciences welcome
- Seed funding for projects and workshops
- Gorgeous city in the south of France

www.iast.fr/research-fel...
Reposted by Wim De Neys
nicolasbeauvais.bsky.social
Happy to share that my first paper is out in Thinking & Reasoning! 📄📢
With Aikaterini Voudouri, @boissinesther.bsky.social & @wimdeneys.bsky.social we show that deliberate reasoning helps not just to correct but also to justify intuitive judgments.

🔗Full paper: shorturl.at/JTeTi
Quick thread below!
wimdeneys.bsky.social
Moses, fast and slow ! @jeremiebeucler.bsky.social interesting evidence for sound intuiting (and reflection). My take home: Don't use semantic illusions as a pure test of cognitive reflection.
jeremiebeucler.bsky.social
1/8

New (and first) paper accepted at JEP:LMC 🎉

Ever fallen for this type of questions: "How many animals of each kind did Moses take on the Ark?" Most say "Two," forgetting it was Noah, and not Moses, who took the animals on the Ark. But what’s really going on here? 🧵
When asked “How many animals of each kind did Moses take on the Ark?”, most people answer “Two”, failing to notice that it was Noah, and not Moses, who took the animals in the Ark. “Fast-and-slow” dual process accounts of such semantic illusions posit that incorrect responders are not sensitive to their error and that overcoming the illusion requires deliberate correction of an intuitive erroneous answer. We present three experiments that force us to revise this dual process view. We used a two-response paradigm in which participants had to give their first, initial answer under cognitive load and time pressure. Next, participants could take all the time they wanted to deliberate and select a final answer. This enabled us to identify the intuitively generated response that preceded the final response given after deliberation. Results show that participants do not necessarily need to deliberate to avoid the illusion and that incorrect respondents consistently display error sensitivity (as reflected in decreased confidence), even when deliberation is minimized. Both reasoning performance and error sensitivity in the initial, intuitive stage tended to be driven by the semantic relatedness between the anomalous word (e.g., “Moses”) and the undistorted word (e.g., “Noah”). We show how this leads to a revised model where the response to semantic illusions depends on the interplay of both incorrect and correct intuitions.
wimdeneys.bsky.social
They should do something about the acronym though ;-)
wimdeneys.bsky.social
"Defining deliberation for dual-process models of reasoning" is now published. Free online access to the published Nat Rev Psy version: rdcu.be/erM5T
Reposted by Wim De Neys
ninafraniatte.bsky.social
🚨Check out our new paper with @boissinesther.bsky.social, Alexandra Delmas & @wimdeneys.bsky.social in Acta Psych!

📹 We show that video debiasing training can boost reasoning accuracy - not just deliberation, but intuition too!

🔓 Open access: www.sciencedirect.com/science/arti...

Quick summary👇
wimdeneys.bsky.social
Goal: hopefully support more precise theorizing and empirical work on “System 2”—both in human and machine cognition. Full paper: osf.io/preprints/ps... (5/5)
OSF
osf.io
wimdeneys.bsky.social
I propose guiding principles to avoid problematic misconceptions and point to critical outstanding issues we need to address in the coming years. (4/5)
wimdeneys.bsky.social
Key point is that deliberation should be understood as multifunctional, serving multiple, complementary purposes. (3/5)
wimdeneys.bsky.social
Although deliberation is central to dual-process theories, its conceptualization remains vague. I sketch a framework clarifying what System 2 deliberation is and does. (2/5)
wimdeneys.bsky.social
New forthcoming perspective paper in Nature Reviews Psychology: “Defining System 2 deliberation for dual-process models” preprint: osf.io/preprints/ps...
(1/5)
wimdeneys.bsky.social
It's been contested from the start :-) but good point: "examined" would be more accurate
wimdeneys.bsky.social
(6/6)
This preference can also be misused.
If people trust deliberation intuitively, it means both humans & AI can appear more trustworthy simply by framing decisions as “carefully reasoned”—even if they aren’t.

Read the full study: doi.org/10.31234/osf...
OSF
doi.org
wimdeneys.bsky.social
(5/6)
Why might this matter (even for "fast-and-slow" haters 😉)?
1️⃣ Deliberation shapes trust in advice
2️⃣ AI models already simulate deliberation (e.g., chain-of-thought reasoning).
3️⃣ Knowing this, AI developers can boost trust & fight algorithm aversion.
But…
wimdeneys.bsky.social
(4/6)
Even under time pressure or cognitive load, participants still rated deliberation as better—ironically, indicating that the deliberation preference is itself intuitive.

Interestingly, ChatGPT (3.5 & 4) showed the same preference, suggesting AI models encode human folk beliefs about reasoning
wimdeneys.bsky.social
(3/6)

We asked participants to rate individuals who reasoned intuitively vs. deliberatively—while controlling whether the individual was portrayed as accurate or not.
Across all conditions, we find a strong preference for deliberation.
wimdeneys.bsky.social
(2/6)
While dual process research has pinpointed the mechanics of intuitive and deliberate thinking, we still lack understanding of how people perceive and value these modes of thought—what might be termed a “folk theory” of fast-and-slow thinking.
wimdeneys.bsky.social
New preprint: “Folk Thinking, Fast and Slow: Intuitive Preference for Deliberation in Humans and Machines”

Pop culture often praises intuition (“Blink”, Steve Jobs). But do we really trust it? Across 13 studies, we find a strong intuitive preference for deliberation.

tinyurl.com/8r54dmyn (1/6)
Reposted by Wim De Neys
jbaptistandre.bsky.social
📢 Come study cognitive science in Paris!
The Master’s program in Cognitive Science at @ENS_ULM, @psl_univ, and @EHESS_fr is now accepting applications for the 2025-2026 academic year.

🗓 Deadline: March 13, 2025
💻 Apply here: master-cognitive-science.ens.psl.eu/en/applicati...
wimdeneys.bsky.social
For once the EU is not falling behind! Who needs cutting edge research when you can spend your time uploading forms to the Horizon Europe continuous reporting portal, right?