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Léo Fitouchi

@lfitouchi.bsky.social
1K followers 460 following 76 posts

Cognitive scientist. Studying moral cognition & culture Postdoc at MIT & Harvard Website: leofitouchi.github.io

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Reposted by Léo Fitouchi
Evolutionary Psychology (the podcast) @epthepod.bsky.social · 22/09/2026
This week, we talk to @manvir.bsky.social about magic, shamanism, and mythology! youtu.be/m7zLQ6oSbaM?... podcasts.apple.com/us/podcast/e... www.podbean.com/eas/pb-avb7s...
youtu.be
Magic, Shamanism, and the Scale of Cooperation with Manvir Singh
YouTube video by Evolutionary Psychology (The Podcast)
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Daniel Nettle @danielnettle.bsky.social · 17/09/2026
Pleased to announce the publication of the second edition of 'From Questions to Knowledge: Data Analysis for Psychology and Behavioural Science Using R' mybook.to/questionstok...
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Society for Philosophy and Psychology @socphilpsych.bsky.social · 09/09/2026
Why human societies adopt rigid moral rules: The efficiency–robustness trade-off 
🚨Work by Julien Lie-Panis, Léo Fitouchi, Nicolas Baumard & Jean-Baptiste André
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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Nava Caluori @ncaluori.bsky.social · 08/09/2026
The Religion & Spirituality Preconference at @spspnews.bsky.social 2027 is now accepting applications! We're excited for a full day of programming, including talks from @conradhackett.bsky.social, Patty Van Cappellen, Kristin Laurin, & @lfitouchi.bsky.social. More here! 📣 spsp.org/events/annua...
Poster describing the Religion & Spirituality preconference for SPSP 2027, listing speakers and planned programming.
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Léo Fitouchi @lfitouchi.bsky.social · 08/09/2026
Looking forward to speaking at SPSP Religion & Spirituality Preconference, alongside Conrad Hackett, Patty Van Cappellen, and Kristen Laurin, on Feb 11 in Philadelphia! Submissions are open until October 8: spsp.wufoo.com/forms/2027-p...
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Jay Van Bavel, PhD @jayvanbavel.bsky.social · 18/07/2026
Why do human societies adopt rigid moral rules? People often have legitimate reasons for failing to cooperate, yet those reasons are often opaque, allowing opportunists to disguise selfishness as justified hardship. Rigidity preserves cooperation when trust is fragile www.pnas.org/doi/10.1073/...
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Léo Fitouchi @lfitouchi.bsky.social · 10/07/2026
Why do human societies adopt rigid moral rules? Our new paper, led by @jliep.bsky.social, proposes a new model in PNAS @pnas.org! www.pnas.org/doi/10.1073/...
pnas.org
Why human societies adopt rigid moral rules: The efficiency–robustness trade-off | PNAS
Humans are capable of remarkably flexible moral judgment. Yet societies rely on rigid rules—obligations and prohibitions that apply categorically, ...
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Julien Lie-Panis @jliep.bsky.social · 09/07/2026
Why do societies rely on rigid moral rules? Don't lie. Keep your promises. Don't steal. We all recognize there are good reasons to make exceptions. So why are moral rules so often categorical? Our new paper proposes an answer. 🧵
Screenshot of article title page, "Why human societies adopt rigid moral rules"
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Society for Philosophy and Psychology @socphilpsych.bsky.social · 05/06/2026
Children learn what is right or wrong selectively from a legitimate authority’s punishment 
‼️Work by Young-eun Lee, Setayesh Radkani & Rebecca Saxe
psycnet.apa.org
APA PsycNet
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Léo Fitouchi @lfitouchi.bsky.social · 28/05/2026
In sum, "deterrence vs. retribution" may be a false choice. Retributive feelings fuse compensation and deterrence into a single computation for restoring fairness. And this looks universal: a built-in feature of our moral psychology rather than a culturally peculiar norm.
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Léo Fitouchi @lfitouchi.bsky.social · 28/05/2026
A bonus, against a popular claim: kinship-intensive societies are said to weigh intentions less in moral judgment. But Mentawai participants, like people in the US, punished accidents far less than intentional harms—same logic on both sides of the planet.
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Léo Fitouchi @lfitouchi.bsky.social · 28/05/2026
But compensation isn't everything. Consistent with deterrence, payments included an additional penalty beyond restitution of the lost resource. As the Mentawai adage goes, sabbek silinia, sabbek tulounia—"one is its exchange, one is its fine." Only accidents required restitution alone.
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Léo Fitouchi @lfitouchi.bsky.social · 28/05/2026
Also consistent with compensatory concerns, Mentawai participants asked that victims be repaid in the currency of their loss—steal a pig, get paid back in pigs, not coconut trees.
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Léo Fitouchi @lfitouchi.bsky.social · 28/05/2026
We test predictions of this idea with scenarios that pull compensation & deterrence apart. For example: vary the harm to the victim while holding the offender's gain fixed. Pure deterrence predicts no effect. Yet consistent with compensatory concerns, demands rose with the victim's loss.
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Léo Fitouchi @lfitouchi.bsky.social · 28/05/2026
Human punitive psychology is paradoxical: models say punishment evolved for deterrence, yet people are intuitive retributivists—wanting to "restore a balance," not maximize deterrence. Our solution: retribution restores mutual benefit b/w partners by both compensating victims & deterring offenders.
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Léo Fitouchi @lfitouchi.bsky.social · 28/05/2026
Why do humans punish? Our new paper, with @manvir.bsky.social, is out in Psychological Science! With experiments in a small-scale society (Mentawai) & the US, we test whether punitive cognition evolved to deter wrongdoing or restore fairness. link: tinyurl.com/msrmu7cc pdf: tinyurl.com/mvprz8fb
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koenfucius @koenfucius.bsky.social · 18/05/2026
Research by @lfitouchi.bsky.social & @manvir.bsky.social suggests the tension between (evolutionary) deterrence, and (intuitive) retribution punishment motives is resolved by a model reflecting restoration of mutual benefit between cooperative partners→compensation+deterrence buff.ly/3T6fdvd
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Rob Sica @robsica.bsky.social · 14/05/2026
"contractualism stands on three theoretical pillars that have stood the test of time and enjoyed widespread influence across the humanities, the natural sciences, and the social sciences: social-contract theory, evolutionary theory, and game theory"
wires.onlinelibrary.wiley.com
Contractualist Moral Cognition: From the Normative to the Descriptive at Three Levels of Analysis
Visual summary of the paper. Taking inspiration from the contractualist tradition in moral philosophy is helpful to better understand morality at three interrelated levels of analysis: Its evolutiona...
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Jason Weeden @jasonweeden.bsky.social · 13/05/2026
Here's my attempt to convince @lfitouchi.bsky.social, @jbaptistandre.bsky.social, Nicolas Baumard, et al. that the self-control and cooperation-centered account neglects the core of conflicting sexual/reproductive strategies and modern religiosity: open.substack.com/pub/chartyar...
open.substack.com
What are the core real-life differences between religious and nonreligious people?
And what do those differences mean for recent evolutionary theories of morality and religion?
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Léo Fitouchi @lfitouchi.bsky.social · 13/05/2026
Looks very interesting!! (not sure we disagree; but I hope to find the time to read and reply soon!!)
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Léo Fitouchi @lfitouchi.bsky.social · 07/04/2026
bravo!!!!!!!!!!!!!!!!!!!!!!!! et merci pour la bonne science!!!!!!!!!!!!!!!!!
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Mauro Silva Júnior @maurosilvajunior.bsky.social · 05/04/2026
Participants from a small- & a large-scale society "demanded that victims be rewarded in the currency of their loss & that more severe punishment be imposed when victims suffered more, holding aggressor benefit constant." osf.io/preprints/ps... @lfitouchi.bsky.social @manvir.bsky.social #EvPsych
osf.io
OSF
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Marius Mercier @mariusmercier.bsky.social · 30/03/2026
Thrilled to share that our new paper is now out in @cognitionjournal.bsky.social: "Who knows what? Bayesian Competence Inference guides Knowledge Attribution and Information Search," with @oliviermorin.bsky.social , @hugoreasoning.bsky.social & @tadegquillien.bsky.social! Link: tinyurl.com/ykyhxcc6
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Léo Fitouchi @lfitouchi.bsky.social · 30/03/2026
Couldn’t agree more — clearly the worst side effect of AI 😭
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Léo Fitouchi @lfitouchi.bsky.social · 13/03/2026
Wow, that looks so interesting — looking forward to reading it!!
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Léo Fitouchi @lfitouchi.bsky.social · 22/02/2026
Thanks a lot!!
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Léo Fitouchi @lfitouchi.bsky.social · 22/02/2026
Thank you Oleg!
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Léo Fitouchi @lfitouchi.bsky.social · 22/02/2026
Thanks Jorge!! I wil!
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Léo Fitouchi @lfitouchi.bsky.social · 22/02/2026
Merci Hugo!!
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Léo Fitouchi @lfitouchi.bsky.social · 22/02/2026
Thank you!
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Léo Fitouchi @lfitouchi.bsky.social · 22/02/2026
Yes with pleasure! I also enjoyed your last punishment paper very much
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Léo Fitouchi @lfitouchi.bsky.social · 16/02/2026
Looking forward to work with @fierycushman.bsky.social and @rebeccasaxe.bsky.social on the moral psychology of authority!
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Julien Lie-Panis @jliep.bsky.social · 13/02/2026
New @aeon.co essay just out! On how institutions let us scale trust and cooperation - and when things start to unravel. Big thanks to editor Sam Dresser. For the more technical version, see thread & paper below👇
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IASToulouse @iast.fr · 05/01/2026
Applications for our upcoming Summer School have been extended until January 15! 🤝 Apply now: www.tse-fr.eu/toulouse-sum... @olkcampbell.bsky.social @maximederex.bsky.social @lfitouchi.bsky.social @cmolho.bsky.social @ccavaille.bsky.social
tse-fr.eu
Toulouse Summer School in Quantitative Social Sciences Application
Application to the Toulouse Summer School in Quantitative Social Sciences taking place from May 25th to June 19th, 2026 in Toulouse, France Application deadline: January 15th, 2026 Applicants will be ...
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Evolutionary Psychology (the podcast) @epthepod.bsky.social · 24/12/2025
This week, we talk to @danielnettle.bsky.social about big picture issues in the evolutionary social sciences, craving sugar, income inequality, running, and more! youtu.be/-NPuZSolsEs podcasts.apple.com/us/podcast/e... www.podbean.com/eas/pb-9hsnf...
youtu.be
Evolutionary Social Sciences with Dan Nettle
YouTube video by Evolutionary Psychology (The Podcast)
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Eli Stark-Elster @eselster.bsky.social · 02/12/2025
In a new Review for @cp-trendscognsci.bsky.social -- and my first first-authored paper! -- @manvir.bsky.social and I argue that experience shapes the emergence and evolution of seemingly extraordinary beliefs. www.sciencedirect.com/science/arti...
sciencedirect.com
How experience shapes extraordinary beliefs
The ubiquity of extraordinary beliefs across human societies, such as conspiracy theories, pseudoscience, and supernatural beliefs, is a long-standing…
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Duncan Stibbard Hawkes @dstibbardhawkes.bsky.social · 26/11/2025
For the curious, I have put the author accepted manuscript of our new BBS Target Article on researchgate. You can view it here: www.researchgate.net/publication/...
researchgate.net
(PDF) Egalitarianism is not Equality: Moving from outcome to process in the study of human political organisation
PDF | Many traditional subsistence groups have been described as ‘egalitarian societies’. Definitions of ‘egalitarianism’, especially beyond... | Find, read and cite all the research you need on Resea...
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Duncan Stibbard Hawkes @dstibbardhawkes.bsky.social · 18/11/2025
📣 New BBS preprint out now! 📣 "Models casting egalitarian societies as crucibles of equality perpetuate the factually uninformed notion that foragers are somehow more noble. Critiques portray egalitarianism as romantic fantasy. Neither characterization is wholly justified." doi.org/10.1017/S014...
doi.org
Egalitarianism is not Equality: Moving from outcome to process in the study of human political organisation | Behavioral and Brain Sciences | Cambridge Core
Egalitarianism is not Equality: Moving from outcome to process in the study of human political organisation
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Jean-François Bonnefon @jfbonnefon.bsky.social · 20/09/2025
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...
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Zach Garfield @zhgarfield.com · 10/10/2025
>The Multi-Capital Leadership theory explains why #leadership emerges and why it varies among human societies and throughout individual life histories. w/@chrisvonrueden.bsky.social & @edhagen.net #LeadSciSky #HBES 🧪 link.springer.com/article/10.1...
link.springer.com
The Multi-Capital Leadership Theory - Human Nature
Human leadership and followership take many forms, shaped by the social, economic, political, and cultural contexts of our groups and societies. Underlying this complexity, we argue, are key elements of human social psychology regarding social comparison and the resolution of coordination and collective action problems. The Multi-Capital Leadership (MCL) theory posits that leader emergence and effectiveness depend on perceptions of individuals’ abilities to provide benefits or impose costs in solving challenges of group living, through the deployment of different forms of capital: material, social, somatic (e.g., physical formidability, height, immune functionality), and neural (e.g., knowledge, intelligence, personality, supernatural abilities). We integrate this framework with a review of leadership across human societies, including in non-state and non-industrial contexts, and with novel comparative analyses of ethnographic data. This synthesis highlights how context-specific demands for coordination and collective action, and the accuracy of social comparison, shape the structure and dynamics of leadership and followership across cultures.
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Léo Fitouchi @lfitouchi.bsky.social · 09/10/2025
thank you to all speakers for all the food for thought!
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Eli Stark-Elster @eselster.bsky.social · 24/09/2025
New commentary out w/ @manvir.bsky.social in Religion, Brain, and Behavior! We argue that social learning fails to explain three patterns in religious belief and practice: SBNR beliefs, strategic endorsement of beliefs, and religious experience. Check it out: www.tandfonline.com/doi/full/10....
tandfonline.com
Strategy and experience required: Social learning cannot explain the varieties of supernatural belief
Published in Religion, Brain & Behavior (Ahead of Print, 2025)
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Cécile Sarabian @csarabian.bsky.social · 22/08/2025
🧠 What?! A meeting just on disgust?! Yes!! 📍 @iast.fr, France | 🗓 Dec 4–5, 2025 💥 Keynotes by Paul Rozin @upenn.edu, @cr-amo.bsky.social, Philip Powell @sheffielduni.bsky.social & Cindy Kam 🌍 From Psychology to Politics, Biology & beyond 🎓 Abstract submissions until Aug 31: forms.gle/QBmkUB3aLDjY...
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Catherine Molho @cmolho.bsky.social · 02/07/2025
📣 We are excited (or should we say disgusted?) to announce the conference 'Disgust across borders' at IAST! @iast.fr 🗓️ Join us on Dec 4 & 5 for two days full of disgust research across species and disciplines. Registration and abstract submission are open (until Aug 31): forms.gle/QBmkUB3aLDjY...
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Devikrishna N B (She/Her) @devikrishna.bsky.social · 25/06/2025
I had the most incredible opportunity to attend the Toulouse Summer School in Quantitative Social Sciences at @tse-fr.eu and learn from @lfitouchi.bsky.social , @cmolho.bsky.social & @jorgeapenas.bsky.social on the "Evolution of Human Sociality" Toulouse was warm and welcoming, so was TSE !!
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Léo Fitouchi @lfitouchi.bsky.social · 16/06/2025
Actually, we checked for halo effect by also measuring perceptions of warmth. In many conditions, people do not expect lower warmth to follow—only lower self-control or cooperativeness. So, as far as we can tell, it doesn't look like a halo effect.
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Cecilia Padilla-Iglesias @ceciliapad.bsky.social · 23/05/2025
🚨NEW PAPER from the @eegcam.bsky.social!🚨I have never been as proud of something as of the work that finally we can share today: www.biorxiv.org/content/10.1... - we show how a climatically driven Pan African meta population model explains our species genetic and morphological diversity 🧬💀
biorxiv.org
Pan-African metapopulation model explains Homo sapiens genetic and morphological evolution
Emerging evidence has challenged the traditional view of a single-region origin for Homo sapiens, suggesting instead that our species arose and diversified across multiple geographically distinct popu...
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Rob Sica @robsica.bsky.social · 22/05/2025
"progress in the social sciences is stymied by the widespread misconception that evolution and learning are opposing explanations for behavior... the 'evolution vs. learning' dichotomy is fallacious... explanatory partners rather than explanatory competitors" psycnet.apa.org/record/2026-...
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Catherine Molho @cmolho.bsky.social · 19/05/2025
Very happy to be giving a talk at my favorite colloquium series! Tune in if you're interested in prosociality, willful ignorance, or cross-cultural research.
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Thom Scott-Phillips @thomscottphillips.bsky.social · 17/05/2025
- Wikipedia is a global, free to access encyclopaedia of knowledge - Universities are full of experts on all sorts of niche topics - Those experts are under no career incentives to share their knowledge on Wikipedia I feel that something has gone terribly wrong somewhere
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