Sign in

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

PostsRepliesMedia
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)
095
Reposted by Léo Fitouchi
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...
11613
Reposted by Léo Fitouchi
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...
053
Reposted by Léo Fitouchi
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.
145
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...
082
Reposted by Léo Fitouchi
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/...
0316
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, ...
0194
Reposted by Léo Fitouchi
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"
48441
Reposted by Léo Fitouchi
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
053
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
24313
Reposted by Léo Fitouchi
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
074
Reposted by Léo Fitouchi
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...
075
Reposted by Léo Fitouchi
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?
132
Reposted by Léo Fitouchi
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
031
Reposted by Léo Fitouchi
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
35825
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!
8524
Reposted by Léo Fitouchi
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👇
12811
Reposted by Léo Fitouchi
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 ...
122
Reposted by Léo Fitouchi
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)
095
Reposted by Léo Fitouchi
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…
0268
Reposted by Léo Fitouchi
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...
1132
Reposted by Léo Fitouchi
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
16031
Reposted by Léo Fitouchi
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...
19177
Reposted by Léo Fitouchi
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.
1212
Léo Fitouchi @lfitouchi.bsky.social · 09/10/2025
thank you to all speakers for all the food for thought!
050
Reposted by Léo Fitouchi
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)
1132
Reposted by Léo Fitouchi
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...
12114
Reposted by Léo Fitouchi
Catherine Molho @handle.invalid · 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...
12314
Reposted by Léo Fitouchi
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 !!
473
Reposted by Léo Fitouchi
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...
46028
Reposted by Léo Fitouchi
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-...
283
Reposted by Léo Fitouchi
Catherine Molho @handle.invalid · 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.
0137
Reposted by Léo Fitouchi
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
2114
Reposted by Léo Fitouchi
Matthias Michel @matthiasmichel.bsky.social · 16/05/2025
You can now submit a commentary on our paper here: www.cambridge.org/core/journal.... We're very much looking forward to reading your commentaries and discussing our hypothesis with you!
cambridge.org
Call for Commentary Proposals - Sensory Horizons and the Functions of Conscious
Call for Commentary Proposals - Sensory Horizons and the Functions of Conscious Vision
1198
Reposted by Léo Fitouchi
Laith Al-Shawaf @laithalshawaf.bsky.social · 15/05/2025
Hi friends! I'm now on Bluesky. Looking forward to reading your news & updates. If you're interested in my work, consider following this account. I write about science, philosophy, & culture in peer-reviewed academic journals and popular press magazines. www.laithalshawaf.com/popular-scie...
laithalshawaf.com
Popular Science
POPULAR SCIENCE WRITING ​ Detecting Bullshit Should You Trust the Myers-Briggs Personality Test?  [ English ] [ Portuguese ] [ Turkish ] [ Spanish ] Detecting Bull**it (Online Version)   [...
031
Reposted by Léo Fitouchi
IASToulouse @iast.fr · 09/05/2025
🦋 Ever wondered what happens when curious minds collide? The Friends of IAST starter kit is now on Bluesky! Fellows, researchers, and thinkers are ready to share ideas, spark debates, and explore new perspectives. 👋Join us—this is just the beginning! #FriendsofIAST#starterkit go.bsky.app/5mQmnLF 👇
0123
Reposted by Léo Fitouchi
Duncan Stibbard Hawkes @dstibbardhawkes.bsky.social · 26/03/2025
🚨Preprint alert 🚨 Forager food-sharing is often portrayed as “a positive insistence on equality” (Woodburn) or an “instinct” to equalise inequalities (Fehr). A new paper with @kris-smith.bsky.social, exploring Hadza reallocation decisions, challenges this view. 1/10 papers.ssrn.com/sol3/papers....
papers.ssrn.com
The 'I' in Egalitarianism: Hadza Hunter-Gatherers Averse to Inequality Primarily when Personally Unfavourable
Many anthropologists and economists contend that humans are characterized by strong, universal, other-regarding equality preferences with deep evolutionary root
3258
Reposted by Léo Fitouchi
IASToulouse @iast.fr · 17/04/2025
📢 We're now on Bluesky! Follow us for insights on: 🧠 Interdisciplinary research 🎤 Talks, workshops & conferences 🎧 Podcasts 🧐 Science outreach #Science #Research #Interdisciplinary #IAST #Toulouse #AcademicLife
📢 We're now on Bluesky!

Follow us for insights on:
🧠 Interdisciplinary research
🎤 Talks, workshops & conferences
🎧 Podcasts
🧐 Science outreach

#Science #Research #Interdisciplinary #IAST #Toulouse #AcademicLife
0115
Léo Fitouchi @lfitouchi.bsky.social · 06/05/2025
🧵New paper out in Cognition Why do people moralize harmless carnal sins (e.g. gluttony, masturbation)? @danielnettle.bsky.social & I find that these behaviors activate reciprocity-based moral judgment—no need for a distinct "purity" module. 50 days free link: authors.elsevier.com/a/1l18D2Hx2-...
47727
Reposted by Léo Fitouchi
Nature [Unofficial] @nature.com.web.brid.gy · 26/04/2025
nature.com
Huge reproducibility project fails to validate dozens of biomedical studies
Nature, Published online: 25 April 2025; doi:10.1038/d41586-025-01266-x Unique reproducibility effort in Brazil focuses on common methods rather than a single field ― and prompts call for reform.
12217
Reposted by Léo Fitouchi
Charley Wu @thecharleywu.bsky.social · 25/04/2025
🙌 Hot off the presses @natcomms.nature.com! We created a custom #Minecraft environment to study a long-standing puzzle in cognitive science: How do humans flexibly adapt their individual and social learning strategies in dynamic, realistic situations? Check it out 👉 www.nature.com/articles/s41... 🧵👇
817554
Reposted by Léo Fitouchi
Matthias Michel @matthiasmichel.bsky.social · 21/04/2025
Very happy to announce that our paper “Sensory Horizons and the Functions of Conscious Vision” is now out as a target article in BBS!! @smfleming.bsky.social and I present a new theory of the evolution and functions of visual consciousness. Article here: doi.org/10.1017/S014.... A (long) thread 🧵
doi.org
Sensory Horizons and the Functions of Conscious Vision | Behavioral and Brain Sciences | Cambridge Core
Sensory Horizons and the Functions of Conscious Vision
618069
Reposted by Léo Fitouchi
Dan Sperber @dansperber.bsky.social · 04/04/2025
A year ago I linked to a paper by Deirdre Wilson and me entitled "Rethinking ostensive communication in an evolutionary, comparative, and developmental perspective." A much revised version has been accepted by Psychological Review. The preprint is available at osf.io/preprints/ps...
osf.io
OSF
0204
Reposted by Léo Fitouchi
Alberto Acerbi @acerbialberto.com · 21/02/2025
New cultural evolution modelling paper with @bdecourson.bsky.social on @pnas.org! "Weak individual preferences stabilize culture" A quick 🧵 www.pnas.org/doi/10.1073/...
38540
Reposted by Léo Fitouchi
Human Behavior & Evolution Society @humbehevosoc.bsky.social · 13/02/2025
Welcome to the official Bluesky account of the Human Behavior & Evolution Society (HBES), an international, interdisciplinary organization serving all those who study the evolution of human behavior. We're excited to now be on BlueSky!
0179
Reposted by Léo Fitouchi
Fiery Cushman @fierycushman.bsky.social · 12/02/2025
Sydney's post goes on as a thread with an excellent summary of this work, and a link to the portal for submitting commentaries at BBS. Working on this with Sydney, Josh, and Nick was enormously productive in my own thinking about the structure and function of morality!
073
Reposted by Léo Fitouchi
Sydney Levine @sydneylevine.bsky.social · 12/02/2025
🚨 Now accepting commentary proposals!! 🚨Thrilled to share that our paper --- "Resource-rational contractualism: A triple theory of moral cognition" --- was accepted for publication at Behavioral and Brain Sciences and is open for commentary!
14216
Reposted by Léo Fitouchi
manvir singh @manvir.bsky.social · 11/02/2025
Thrilled to see this out! In our new Psych Review paper, we argue that prosocial religious beliefs develop as people strategically push narratives that motivate others to cooperate. We show how this "mutual policing" dynamic explains (among other things) the origins, decline, & varieties of belief.
12610
Léo Fitouchi @lfitouchi.bsky.social · 11/02/2025
Where do moralizing religions come from? Useless cognitive by-products?Cultural group selection for complex societies? Our Psych Review paper argues: neither. Let’s rethink their cognitive & evolutionary origins🧵 w/ @manvir.bsky.social @nbaumard @jbaptistandre.bsky.social doi.org/10.1037/rev0...
68340
Léo Fitouchi @lfitouchi.bsky.social · 08/02/2025
Thrilled that our paper with @manvir.bsky.social is covered on @peez.bsky.social's great podcast Very Bad Wizzard!! Listen here (starting at ∼31 min): verybadwizards.com/episode/epis... Paper: drive.google.com/file/d/1Xjcf...
verybadwizards.com
Episode 298: Pass the Peace Pipe | Very Bad Wizards podcast
Why do we punish people? How did our punishment practices evolve and what is their primary function? David and Tamler talk about a new paper that examines...
194