We streamlined six new DID-like estimators and created this tutorial for implementation in R. yiqingxu.org/packages/fect/… Hope you no longer need to spend months figuring out what these estimators are and how to use them. w/ Ziyi Liu

🚨 New published paper! Can differentiated VAT rates promote healthier diets? I assess Costa Rica’s 2023 reform aiming to align VAT rates with nutritional aspects to “guarantee a balanced diet” Read Food Policy: doi.org/10.1016/j.food… Imperial Business School Centre for Health Economics & Policy Innovation 1/9🧵👇

This is like The Avengers for Econometrics nerds

This paper has been in the making for so long that eight children across the co-author group were born between the time we started and now! But it is finally out, and you can check it at arxiv.org/pdf/2503.13323

There are days in life that shake you. I’m shattered 💔 to share that I just found out that the US Government terminated my 2024 NIH Director’s Early Independence Award (~$2 million), threatening my long-promised assistant professor job at Columbia University & academic career... 1/🧵

Baby wake up, new paper on RDD just dropped arxiv.org/pdf/2503.09907

Trade economists: The World Bank Development Research Group group is hiring a research economist to work on international trade issues. Posting here: worldbankgroup.csod.com/ux/ats/careers…

Congratulations, boss, you've done it: You're bigger than covid.

With apologies, a long tweet, about the likely macroeconomic outcomes of Liberation Day. Tariffs can be imposed for understandable if not necessarily good reasons: Protect a sector, right or wrong. Extract rents from foreign producers if there are rents to be extracted. Sure,

This is truly amazing. The Deputy White House Press Secretary is claiming that I'm wrong, and that the "tariff rates" on Trump's chart were calculated by "literally" measuring every country's tariffs and non-tariff trade barriers. To prove it, he screenshots the formula the USTR

🚨PhD alert! In light of everything happening in the world, the Econ Department at Imperial Business School is conducting a second lightning round of admissions for fall 2025! Applications due April 30, offers in mid-May. Please spread the word! More details: dropbox.com/scl/fi/55wkl2q…

If you have a paper at the intersection of AI and Economics, submit your paper! 👇

Last month, I stepped down as an editor after 6.5 years (4 REStud; 2.5 JEEA). I have gathered a few suggestions that can help you avoid unnecessary negative referee reports.

I’m sharing my slide deck on the demographic future of humanity, 🔗 Slides: sas.upenn.edu/~jesusfv/Slide… prepared for the keynote address I will give tomorrow to the 7th EBRD and CEPR Research Symposium on “The Economics of Demographic Change”: 🔗 Symposium: ebrd.com/home/news-and-…

This is great (gonna save it for next post)

This (recently updated) free textbook on difference-in-differences looks amazing! It comes with practitioner checklists and practice data + code. A teaching/research goldmine! by Clément de Chaisemartin and Xavier D'Haultfoeuille.

VSCode is currently a really powerful IDE given its integration with copilot. Looking forward to checking this out!

Forthcoming in AEJ: Applied:

If you've been wondering how to explore the informational content of your Parallel Trends assumptions to get the most precise DiD and ES estimator possible, we have some good news for you!! Our new DiD paper is out: arxiv.org/abs/2506.17729 😎Get along for a brief overview😎 1/

My study was mentioned in an online article of Ansa.it -> Bankitalia, aziende inquinanti a maggior rischio di default - Ansa.it ansa.it/sito/notizie/e…