Released today! SEVEN DECADES: HOW WE EVOLVED TO LIVE LONGER Now available at your favorite bookseller. Leave a review on Goodreads or Amazon if you can. Please help spread the word! #sevendecades @princetonupress.bsky.social

Evolutionary psychology reveals patterns in mass murder motivations across life stages

This New Yorker essay about New Yorker fact-checkers is terrific. www.newyorker.com/magazine/202...

This article dovetails well with my ongoing research on the status threat regulatory system and its links to envy and violence. Looking forward to seeing how @keithminihane.bsky.social and his colleagues continue advancing this important line of work.

Ecstatic to be on @epthepod.bsky.social with @davidpinsof.bsky.social and @dpietra.bsky.social. A rare chance to talk in depth about my work, especially with such exceptional colleagues. Highly recommend their other episodes too!

New preprint w/ Nathan Gabriel & @avbell.bsky.social: The Evolution of Identity Signals for Coordination in Diverse Societies The model tackles multiple nested/overlapping identities and complex signaling structure. Recovers lots of old results and adds several new ones osf.io/preprints/so...

As Political Violence Surges, Trump Shuts Down a Top Prevention Program www.motherjones.com/politics/202...

Meet the speakers behind our #WplusEBS panel at #HBES2025: “Gender and identity in the evolutionary human sciences” 🗓️Friday, June 6th ⏰4:50pm - 6:10pm We’re highlighting each panelist in this thread so read on! 👇1/6

LGBTQ+ or an ally? Don't miss the LGBTQ+ Networking & Social Event at #HBES2025, Atlantic City! 🌈 / June 4 at 8 PM at 10 North Lounge inside the Tropicana. Make new friends, reconnect with old ones, and spark collaborations. Questions? Contact @mbarlev.bsky.social or @mikemoncrieff.bsky.social

🙌 can’t wait for this!

New research reinforces the link between envy and mass violence: ‘Manifestos of envious mass murderers show narcissism, grievances, and desire for social/romantic status.’ bit.ly/4bJyz70. This aligns with my own research on envy’s role in radicalization.

Indeed, I think this is exactly why the internet plays such a prominent role in the radicalization process. Hitting upon collectively endorsed justifications likely green-lights harmful actions. www.theatlantic.com/technology/a...

"A study of federally funded research projects in the United States estimated that principal investigators spend on average about 45% of their time on administrative activities related to applying for and managing projects rather than conducting active research" www.pnas.org/doi/10.1073/...

Arie is right, and envy is responsible for such violent responses to perceptions of lowered status. “‘When people feel disempowered because of immigration, economic inequalities […] they are motivated [and] may be compelled to take violent action...” bit.ly/4iZ5iZf

New paper from Adam Anderson's lab at Cornell showing evidence of visual "affective affordances" - predicting human valence ratings from low level image statistics independently of centrally modulated valence arising from image content and arousal. www.nature.com/articles/s41...

Why is impulsivity so strongly linked to radicalization? Our findings show that envy connects impulsivity to radicalization, revealing an ‘impulsive-envious pathway’ to aggression. 🧵

The UnitedHealth assailant exemplifies envious radicalization: a rapid decline in social status, a zero-sum framing of the situation, the search for perceived causal agents, and the drive to eliminate or depower them through violence. See: doi.org/10.1007/s408...

Over one year and still missing Pierre. The moments we spent working together will always be among the best of my life. So proud of what we were able to discover. I’m so thrilled to share the next round of publications (coming soon) as a result of our friendship.

Come join my team as we close out and celebrate our last 6 years of research! It’s bitter sweet as I will certainly miss working so closely with such an amazing team of brilliant scholars and the many others who we have been so fortunate to have as dear friends and collaborators. lnkd.in/eUAgJCge

What psychological mechanisms drive the dramatic changes observed during radicalization? We argue that the functional mechanisms of envy should take center stage in future research. Excited to celebrate this article’s one-year anniversary at the end of the month!

Making the move from X.