When asked who beyond my immediate circle has shaped my thinking the most, I often point to two names: Toshio Yamagishi and Gary Bornstein. It was an honour for me to write this short piece to pay tribute to Bornstein's classic work on intergroup conflicts. Open-access link: rdcu.be/eH8te

In an online study with 3,371 participants from 13 societies, Jin et al. found that perceived societal honour norms predicted both greater competition and cooperation. @shuxianjin.bsky.social @ayseuskul.bsky.social www.nature.com/articles/s41...

Join us in three hours for this week's Cooperation Colloquium!

My PhD student @qinyuxiao.bsky.social has written a wonderful tribute to Gary Bornstein’s influential paper on team games (doi.org/10.1207/S153...) — a paper that remains as relevant today as it was over 20 years ago. You can read Qinyu’s short piece here: doi.org/10.1038/s441...

📢 New SysRev + Meta-Analysis out in Health Psychology Review! Together with the amazing Martin Voracek, @corneliabetsch.bsky.social & @robertboehm.bsky.social Do messages about herd immunity increase or decrease vaccination motivation? 🤔 Read more to find out! 🧵 OA: doi.org/10.1080/1743...

New paper in NHB 📄🚨 We ran extensive experiments to show that making the rules of some canonical economic games looser, makes people more cooperative www.nature.com/articles/s41...

Cooperation Colloquium this week: Talbot M. Andrews @talbotmandrews.bsky.social (Cornell): Overcoming the social dilemma of climate change Friday, Sep 26, 15:00 UTC+2 Vienna / 9 am NYC Sign up: list.ku.dk/postorius/li...

Come to Scotland, everybody!

Want some free career advice? #AcademicChatter

💙New paper!💙 How is knowledge transmitted across generations in a foraging society? With @danielredhead.bsky.social we found: In BaYaka foragers, long-term skills pass in smaller, sparser networks, while short-term food info circulates broadly & reciprocally academic.oup.com/pnasnexus/ar...

The first colloquium will take place in four hours, at 14:00 CEST.

I will be travelling tomorrow (29th) to Florence for SPUDM #spudm #spudm25, and heading to Lucca the next day. If you also arrive early, happy to meet up!

I will be travelling tomorrow (29th) to Florence for SPUDM #spudm #spudm25, and heading to Lucca the next day. If you also arrive early, happy to meet up!

We are excited to announce the line-up for the 2025 autumn edition of the Cooperation Colloquia, which will start on 12 September!

🚨 We’re hiring! 🚨 The Social&Environmental Psychology Group @ruhr-uni-bochum.de is recruiting 2 PhDs and 1 Postdoc as part of the ERC-funded SUSCON project on sustainable consumption. Details here: PhDs:👉 jobs.ruhr-uni-bochum.de/jobposting/7... Postdoc:👉 jobs.ruhr-uni-bochum.de/jobposting/e...

Postdoc Opening | University of Arizona The SPECIEs Lab is hiring a 3-year postdoc. Focus: interdependence, cooperation, fieldwork w/ the Mayangna (Nicaragua), cross-cultural surveys, experiments. 🔗

Trying to revive the old Twitter thing: @qinyuxiao.bsky.social and I just got to Tilburg for TIBER -- anybody else already in town?

📣 New registered report in @nathumbehav.nature.com with Ivan Soraperra, @jonathanschulz.bsky.social, and Shaul Shalvi: rdcu.be/eAcMA With data from 7,978 participants in 20 countries, we find that information about negative externalities promotes prosociality, especially in guilt-prone individuals.

I’ve been staying at St Andrews, Scotland for the past week, enjoying the beautiful town & nature and discussions on science. Thanks a ton @simoncolumbus.bsky.social for hosting me and the fantastic full-course dinner - Simon turned out to also be an amazing cook!

So pleased and proud to share this work. I started trying to think clearly about authority punishment in 2018. This new paper with Setayesh Radkani is the first fruit of that labour. Why so much struggle? See thread. 1/17

Much enjoyed working on this project, which bridges my two disciplinary backgrounds. A ton of thanks for my coauthors, esp. @nadirafaber.bsky.social who’s supported me a lot!

🚨Out in PNAS🚨 with @joshtenenbaum.bsky.social & @rebeccasaxe.bsky.social Punishment, even when intended to teach norms and change minds for the good, may backfire. Our computational cognitive model explains why! Paper: tinyurl.com/yc7fs4x7 News: tinyurl.com/3h3446wu 🧵

🇨🇭🇪🇺 Just Published in Royal Society Open Science! A scoping review on metrics to quantify reproducibility: royalsocietypublishing.org/doi/10.1098/... Ever conducted a replication and pondered when/how to conclude if it was (un)successful? We have just the paper for you (led by Rachel Heyard)! 1/14

🚨New paper alert! "Recognising, Anticipating & Mitigating LLM Pollution of Online Behavioural Research" Online experiments are being polluted by LLMs. We map the threat and fixes🧵 w/ Raluca Rilla, @hiromu1996.bsky.social, @iyadrahwan.bsky.social & Anne-Marie Nussberger arxiv.org/abs/2508.01390

Behavioural interventions often hit structural barriers. This new Comment by Hofmann et al. urges policymakers to combine structural & behavioural insights for systemic reforms. #behaviouralscience

📢 New commentary out today in Nature Human Behaviour! We argue that behavior change interventions often suffer from a one-sided success focus. But failures may reveal structural barriers people face. 🔗 rdcu.be/ex8hR #BehavioralScience #PublicPolicy

An der @univie.ac.at suchen wir eine/n Gastprofessor*in für Arbeits- und Organisationspsychologie ab Oktober 2025 für einen Zeitraum von 2 Jahren. 🔗 berufungsservice.univie.ac.at/fileadmin/us...

🚨New article in Proc B: "Reciprocity evolves more readily in competitive than cooperative socio-ecologies" Using agent-based evolutionary models, we show that reciprocity emerges more reliably in competitive environments with high exploitation risk. 🔗 royalsocietypublishing.org/doi/10.1098/...

Published two years ago in @science.org: "Body-based units of measure in cultural evolution" We looked into how, and why, human societies have measured things with their bodies. A little thread about the deep ancestry and cross-cultural heritage of measurement: www.science.org/doi/10.1126/...

Rare open-rank researcher job in environmental psychology, Copenhagen employment.ku.dk/all-vacancie...

📣 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...

Experimentology is out today!!! A group of us wrote a free online textbook for experimental methods, available at experimentology.io - the idea was to integrate open science into all aspects of the experimental workflow from planning to design, analysis, and writing.

Very excited to publicly share news about a new tool, Papercheck, that @debruine.bsky.social and me started to develop more than a year ago! In an introductory blog post, we explain our philosophy to automatically check scientific papers for best practices. daniellakens.blogspot.com/2025/06/intr...

NEW: Statement from the PCI RR Managing Board on the withdrawal of Infant and Child Development as a PCI RR-friendly journal, and the decision by Wiley to refuse preprints that have been peer-reviewed by @peercommunityin.bsky.social / @pci-regreports.bsky.social Read here ➡️ osf.io/tn8mh

🚨 Big milestone for Rdatasets 🚨 The web archive now hosts 3400+ free and documented CSV datasets. Fantastic for teaching and testing! And {Rdatasets} is a new #RStats 📦 for easy download and search Web archive: vincentarelbundock.github.io/Rdatasets R 📦: vincentarelbundock.github.io/Rdatasetspkg

Quite pleased with this paper. Usually in #culturalevolution experiments, people choose who to copy. We flipped it so that people chose with whom to share their information. Sharers got reputation increases for sharing, which we expected would allow partner choice, i.e. people share with sharers.

PCI Psychology is here!! 🎉🥳 After over a year of hard work by so many people, we are thrilled to announce that we are open for submissions! Join us in making publishing more efficient, equitable, and open: psych.peercommunityin.org #PsychSciSky #scipub

#ICSD2026 in Shimonoseki is coming

It was great to host Hiro @hirotakaimada.bsky.social for a few days in Vienna to discuss research on in-group favouritism, indirect reciprocity, and intergenerational cooperation!

Join us on Friday for the last Cooperation Colloquium of the semester: Fernando P. Santos @fernandopsantos.bsky.social Cooperation and indirect reciprocity in human-AI systems Date: June 6 Time: 15:00 UTC+2 (Vienna) / 9 am NYC Sign up: list.ku.dk/postorius/li...

In October I'll be giving a 2-day workshop at @stathorizons.bsky.social about how to make beautiful websites with #QuartoPub! Learn how to make and deploy personal websites, research websites, an course websites all with minimal HTML/CSS

Research Briefing on "Why people follow rules" out now in Nature Human Behaviour @nathumbehav.nature.com : Read it at rdcu.be/epdIH

Don't assume, plot datacolada.org/126

People always ask me, “how do I know my manuscript is done?” There’s only one way, my friends. If your file name looks something like this: Manuscript - Final Draft 3.7 FINAL FINAL - FINAL (5).docx Then, and only then, is it time.

I just updated my post on equivalence testing with {marginaleffects} so that it's consistent with the latest version. (Some of the notes and code were outdated.) www.carlislerainey.com/blog/2023-08...

🚨New blog post 📝: Your Study Is Too Small (If You Care About Practically Significant Effects) #effectsize #precision #poweranalysis #research #Psychology #MCID open.substack.com/pub/mzlotean...

🥳🥳 New paper in @nathumbehav.nature.com: “When development constricts our moral circle." Contrary to popular belief, younger kids may start out with broader moral circles than older ones. Check it out here 👉 rdcu.be/eoaSe w/ @mattiwilks.bsky.social @karrineldner.bsky.social & Lucius Caviola

🚀Postdoc position @unimarburg.bsky.social in the project: "Bridging the Gap Between Verbal Psychological Theories & Formal Statistical Modeling with Large Language Models" (funded by @volkswagenstiftung.de) 📅Start: 01.10.2025 | ⏳4 years 🔗 Apply now: uni-marburg.de/jhbCen 🔄 Thanks for sharing!

New paper on why people follow rules by (former) @uoncedex.bsky.social researchers Simon Gaechter, @lucasmolleman.bsky.social and Daniele Nosenzo, out now in @nathumbehav.nature.com. We develop the CRISP framework of rule compliance & argue that 4 fundamental motives are at play in rule following.

Please spread the word! Psych Science is recruiting volunteers to help conduct computational reproducibility checks. If you have experience writing reproducible analysis scripts in psychology, and want to join the team, please apply! www.psychologicalscience.org/publications...