We finished days 2-3 of our #summerschool in #healtheconomics Packed with insights from @jmwooldridge.bsky.social on recent DiD methods StefanieSchurer on policy applications @erdaltekin.bsky.social on the publication process Plus great presentations throughout💪 #econbluesky

First of all, I added an implementation of extended two-way fixed effects (@jmwooldridge.bsky.social 2021), etwfe(), with inputs and outputs aligned with fetwfe(). There's also now betwfe(), which implements a bridge-penalized (includes lasso and ridge regression) version of etwfe().

🚨 One spot just opened up for our Summer School in Health Economics! Top-notch lectures by @jmwooldridge.bsky.social and Stefanie Schurer, presentations, and a great social program are waiting for you. First come, first served – apply now! #EconBluesky #economics @healtheconall.bsky.social

It’s a real pleasure teaching a course with @pedrosantanna.bsky.social. Many are calling us “Fire and Ice.”

To calculate CPI, BLS teams collect 90k price quotes every month covering 200 different item categories. When data not available, BLS staff typically develop estimates for approximately 10% of cells in the CPI calculation. However, in May, share of data in the CPI that is estimated increased to 30%

Met Big Freedia and entourage on an elevator in NOLA.

Thanks so much to the organizers of @hayfestival.bsky.social, my super-sharp interlocutor @jennifernadel.bsky.social, and an enthusiastic audience for making my first appearance at the incomparable books jamboree in the Welsh countryside so enjoyable. Hope to be back someday.

Universal school masking reduced weekly COVID-19 deaths by 0.57 per 100k people. 50 percent of districts removed mask requirements by spring 2022 contributing to 9 percent of COVID deaths that year, from Guzman, Imberman, Filosa, Kilbride, and Malkus https://www.nber.org/papers/w33849

Hugh to Pippin: My kingdom for your fish. Happy #Caturday!

Still time to sign up for ESTIMATE, which starts in less than two weeks. Those near East Lansing can attend in person! An online option also is available. Still planning on the Saturday evening soccer match .... econ.msu.edu/academics/es...

Expected to tune into the Tigers’ game. Got the mesmerizing Dutch Darts Championship instead.

That feeling when the morning tea doesn’t taste quite right, and you get to the bottom of the cup to find a big, white globule.

All of the orange and white beasts found a sunbeam on this #Caturday!

Here's a link to sign up for a free webinar that I'm giving ahead of the Timberlake Summer School in Cambridge: timberlake.co/uk/cambridge...

Thanks very much to Anil Pratinav for this generous review of my new book in The Guardian. www.theguardian.com/books/2025/m...

The method of Poisson regression for estimating lower bound WTP appears in this paper. It dates back to a 2016 report valuing damages from the Deep Water Horizon oil spill. The exponential mean allows covariates, ensures positive predictions, and leads to a logically consistent WTP estimate.

Congratulations to all for their Faculty awards, but special congratulations to our own Riley Acton (@riacton.bsky.social) for being this year’s recipient of the James Robeson Junior Faculty Award for Research Excellence. miamioh.edu/fsb/news-eve...

I enjoyed the conversation very much. Thanks to all at @thebrianlehrershow.bsky.social for inviting me on.

She updated another one, which is my absolute favourite of hers. The attention to detail is just magnificient. If ever you've wondered what a Halloween (or χ²lloween) party among econometricians would look like, this would be it... Notice the level of detail in the background

Workshop alert! We are trying to figure out if enough people will attend ESTIMATE, either in person in beautiful East Lansing, or remotely, in order to make it worth running. It's a fun three days! Rumor has it that this is how one gets a beta hat. econ.msu.edu/academics/es...

Evidence of Trump's impact is everywhere — except, for the most part, in economic data itself. So forecasters are scouring earnings calls, sifting through obscure indicators and collecting anecdotes to try to suss out where the economy is headed. #EconSky www.nytimes.com/2025/05/07/b...

Welp, there goes my 2028 presidential run.

I had a lot of fun talking to @jenniferdoleac.bsky.social on her Probable Causation podcast about the IGNITE program: an innovative jail-based rehabilitative program in Flint, Michigan www.probablecausation.com/podcasts/epi...

Since last week, Harvard has been signaling to the White House "that they would see it in court, where the university would be able to make a strong case that the government’s actions are illegal." My new column on the $53B war chest enabling this defiant stand: www.newyorker.com/news/the-fin...

Congratulations to newly appointed AER Board Members (starting in Jan ‘26): Christiane Baumeister, Ruixue Jia, Michaela Pagel, Evan Sadler, Laura Wherry (@laurawherryr.bsky.social), and Sevgi Yuksel @AEAjournals #EconSky

Pippin: “Sunny may work for treats on #Caturday, but I refuse to.”

Looking forward to being on This Week with George Stephanopoulos on ABC News tomorrow morning at 9am ET.

Checking in from the Lansing “Hands Off” rally!

Seven econometricians, all four census regions represented. At Clemson U.

60 hours now without power. It’s basically like being an assistant professor—only worse.

IT'S OFFICIAL. I WROTE MY FIRST BOOK! 🤯 #TheDoubleTax unpacks the cost of being a woman, why the bill runs higher for women of color, and how closing the gaps moves us ALL forward. #blacksky #booksky #econsky PRE-ORDER NOW: tinyurl.com/doubletax-or... Get Involved: tinyurl.com/doubletax-join

Excellent choices!

Mississippi State Univ. is hiring a tenure-track Econ Assistant Prof w/ August start! Open field; pref. for applied micro & teaching PhD Micro I & II (Micro II this fall). Apply: MSU site & www.aeaweb.org/joe/listing.php?JOE_ID=2025-01_111475768 Please repost—it's an off-cycle search. Thanks!

I'm often surprised when, at a conference, I'm one of the few people who annotates slides during a talk. Sometimes the technology doesn't easily allow it because it's hard to connect a laptop to the projector. But often it's pretty easy, yet conference hosts seem unprepared for the request.

I just saw a paper that referred to the “Mundlak-Chamberlain-Wooldridge device.” 🥹

Is anyone organizing crime sessions for APPAM this year?

Who wants to play for second?

Me attending the random econometrics seminar or conference presentation: “How is this difference-in-differences?”

Happy International Women's Day! On this day, I want to remind everyone that there is NO PAST, PRESENT, OR FUTURE without women. We are everything and then some. With that said, something BIG is coming your way. Watch this space. #IWD2025 #IWD #Women #bluesky

I'm getting the feeling that my current research on difference-in-differences with non-binary treatments has no shot at NSF funding.

March 8. Still no New Year’s resolutions fulfilled. Might as well wait until next year.

😬

The happy hour and soccer matches are also a good time!

⏳ Only 2 days left to register! ⏳ Join the many professionals who have already signed up for our 'Panel data for banking sector analysts' online course with @jmwooldridge.bsky.social – a unique opportunity to learn from a world-class econometrician. Register by 5 March 👉 fbf.eui.eu/course/panel...

I got laid off today, with the rest of 18F. 18F was an elite federal software shop. We made gov't websites work better, more efficiently for the American people. We saved taxpayers from getting screwed over by contractors. And were fired for it. We made this website to tell our story: 18f.org

And now this is the best moment of my day! Cheers to you and Maggie!

Me lecturing on DiD circa Feb 2025.

A propose renaming DOGE the Department of Random Cutting.