Zach Garfield

@zhgarfield.com

Evolutionary anthropologist. Leadership, punishment, & conflict resolution. Asst. Prof of Anthropology @grinnellcollege.bsky.social. Co-Director @omovalleyresearchproject.org. Former RF @iast.fr. https://www.zhgarfield.com

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"

#CES2026 is over - amazing days exploring new frontiers in animal culture and archaeology with so many talented people. Grateful to be in Rabat and happy to have presented my poster "Mapping Cultural Transmission in Human and Non-Human Primates" Thanks everyone - looking forward to the next CES✨

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What a week! I had a wonderful time at #CES2026 and I'm very thankful for the opportunity to hang out with such amazing people and researchers, learn about their work and present my own. 🧬 I leave Morocco the head full of ideas, the heart full of friendship (and the stomach full of tajine) 🙌🏻

I am standing in front of a large screen displaying the second slide of my presentation regarding the use of genetics in cultural evolution studiesSelfie with Francesco d'Errico, Ivan Colagè, Andra Meneganzin, Chiara Pertile and myselfSelfie with Andra Meneganzin, Willem Church and myself Picture of the UM6P campus in Rabat at the golden hour

HBES 2026 | Day 2 at UM6P Rabat 📍 The 37th Annual Human Behavior and Evolution Society Conference continues with a day full of exchanges and global perspectives

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What's really clear from today's #CES2026 - #HBES2026 panel is how much we've come to work together, across the evolutionary social & behavioral sciences. Monique Borgerhoff Mulder sums it up: "The gaps between evolutionary psychology, human behavior ecology, & cultural evolution have narrowed"

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📢IMPORTANT NOTICE Participants are required to bring their passport with them to access the campus. Please do not forget it, as it is mandatory for entry. We are very excited to welcome you!

📢IMPORTANT NOTICE Participants are required to bring their passport with them to access the campus. Please do not forget it, as it is mandatory for entry. We are very excited to welcome you!

Fitting to see this out w/ @hbes2026.bsky.social around the corner. @rayhames.bsky.social, last year's #HBES Lifetime Achievement winner, gave us a brief history of the society. Martin Daly will build on it with a panel, The History & Prehistory of HBES See all you *The Podcast* talking heads soon

Evolutionary Psychology (the podcast) @epthepod.bsky.social · 3mo ago

This week, we talk to Ray Hames about his time working with the Yanomamo and Napoleon Chagnon (w/ guest host @zhgarfield.com) youtu.be/fnwliwsTAI8 www.podbean.com/eas/pb-jfe2d... podcasts.apple.com/us/podcast/e...