Really excited to see this out after 4 years of very hard work. Thanks, Angela Duckworth and Katy Milkman, for such great leadership!

🚨New Paper Alert🚨 In a megastudy w/ 140k U.S. teachers on Zearn we tested 15 email campaigns nudging teachers to help their elementary school students progress in math. Our emails boosted math progress slightly (by 1.9%). Personalization added value. pnas.org/doi/10.1073/pn…

Here is a strong statement from staff at Heterodox Academy on the nature of the current threats to open inquiry on campus, and the chill and self-censorship being caused by recent actions by the federal government: heterodoxacademy.org/blog/open-inqu…

This Comment from Gary Charness and colleagues discusses how various LLM tools can support different stages of the experimental research process. nature.com/articles/s4156…

This is fucked up man. We made this country great by welcoming people like this.

Very glad to see President Garber leading Harvard and I hope all universities in resisting extralegal and unreasonable demands from the federal government. thecrimson.com/article/2025/4…

Some news: after four wonderful years at Haas School of Business, I'm heading to Columbia Business School this fall as an assistant professor in the Decision, Risk, and Operations Division. I'm incredibly excited to be joining a division full of brilliant colleagues studying marketplace design,

So, um, it turns out o3 is British?? It’s giving me “memorisation”, “optimisation”… Or is the queen” English the language of AGI?

✨ How is AI reshaping the labor market? 🎙️Join Bipartisan Policy Center on April 29 for a conversation about how AI is already showing up in the labor market and what policymakers and AI developers should keep in mind as they navigate this transition. We'll be joined in

Forthcoming in AER: Insights: "The Consumer Welfare Effects of Online Ads: Evidence from a 9-Year Experiment" by Erik Brynjolfsson, Avinash Collis, Daniel Deisenroth, Haritz Garro, Daley Kutzman, Asad Liaqat, and Nils Wernerfelt. aeaweb.org/articles?id=10…

Thrilled to share that our paper on measuring the disutility of ads on Facebook using a long running field experiment is our in AER: Insights!! 🎊🥳🎉🍾

1/14 Can we build an AI that thinks like psychologists or economists? 🤔Our new preprint shows how reinforcement learning (RL) can train LLMs to explain human decisions—not just predict them! That is, we're pushing LLMs beyond mere prediction into explainable cognitive models.

Boston showed up for No Kings Day!

Trump struck Iran without any authorization of Congress. We need to immediately return to DC and vote on Thomas Massie and my War Powers Resolution to prevent America from being dragged into another endless Middle East war.

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Ask your best and brightest to apply!!

Longer thread incoming, but Richard H Thaler and I have a new book coming out “Winner’s Curse: Behavioral Economics Anomalies—Then and Now”, out on October 21. And our UK publisher is running a promo!

Excited to see this nice piece about our prompting engineering paper form MIT Sloan School of Management. Make sure to be thoughtful about integrating new generative models into systems!