John Mullahy
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johnmullahy.bsky.social
John Mullahy
@johnmullahy.bsky.social
2.8K followers 660 following 2.5K posts

UW-Madison, Univ. of Galway, NBER

C.V.: https://uwmadison.box.com/s/kkaquhtv5b2og4yo6md5p34f7q7gx1ju

Banner image: Free Clinic (detail), Jacob Lawrence, 1937

Videos
Economics 46%
Mathematics 17%
Posts Replies Media Videos

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 8h
"to render our national government a blessing to all the people, by constantly being a Government of wise, just, and constitutional laws, discreetly and faithfully executed and obeyed"

— George Washington, Thanksgiving Proclamation, 1789

www.mountvernon.org/education/pr...
Thanksgiving Proclamation of 1789
By the President of the United States of America, a Proclamation. Whereas it is the duty of all Nations to acknowledge the providence of Almighty God, to obey his will, to be grateful for his benefits...
www.mountvernon.org

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 12h
This Thanksgiving I am grateful that we are finally starting to see headlines that read "Congressional Republicans…are openly blasting President Trump"
nytimes.com The New York Times @nytimes.com · 1d
Congressional Republicans including Senator Mitch McConnell are openly blasting President Trump’s team of appeasing Russia, warning that doing so would not lead to lasting peace.
Republicans Fight With Trump’s Team Over Ukraine Talks
Senator Mitch McConnell and several other lawmakers accused President Trump’s team of appeasing the Kremlin, warning that doing so would not lead to lasting peace.
nyti.ms

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 13h
🤣🤣🤣

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 13h
Were there such a thing as the Journal of Econometric Practice (BTW, there should be) this paper would merit publication as the lead article in volume 1, number 1.
dlmillimet.bsky.social ᴅᴀɴɪᴇʟ ᴍɪʟʟɪᴍᴇᴛ ✡️☮️❤️ @dlmillimet.bsky.social · 14h
Thanks, John. Marc and I thought this was an important paper to write. It was an issue that has long bothered both of us. Hopefully it helps applied peeps think a bit more carefully about their model.
johnmullahy.bsky.social John Mullahy @johnmullahy.bsky.social · 15h
When fixed effects aren't fixed...

Important work by @dlmillimet.bsky.social and Marc Bellemare that should influence econometric practice.

onlinelibrary.wiley.com/doi/10.1111/...

Reposted by Stephen P. Jenkins, John Mullahy

dlmillimet.bsky.social
ᴅᴀɴɪᴇʟ ᴍɪʟʟɪᴍᴇᴛ ✡️☮️❤️ @dlmillimet.bsky.social · 14h
Thanks, John. Marc and I thought this was an important paper to write. It was an issue that has long bothered both of us. Hopefully it helps applied peeps think a bit more carefully about their model.

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 14h
The 1961 Wall St. Journal Thanksgiving editorial grows more relevant with each passing year.

www.wsj.com/opinion/and-...
Opinion | And the Fair Land
An editorial published annually since 1961: For all our social discord we remain the longest enduring society of free people governing themselves without benefit of kings or dictators.
www.wsj.com

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 14h
Hats off to the UW-Madison University Opera for their brilliant production of The Marriage of Figaro. The talent and energy of these young performers and crew never cease to amaze.

music.wisc.edu/university-o... @uwmadison.bsky.social

Reposted by Daniel L. Millimet, Michael A. Clemens, Valerie Mueller

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 15h
When fixed effects aren't fixed...

Important work by @dlmillimet.bsky.social and Marc Bellemare that should influence econometric practice.

onlinelibrary.wiley.com/doi/10.1111/...
On the (Mis) Use of the Fixed Effects Estimator
Data that span multiple units and time periods allow controlling for time-invariant heterogeneity correlated with the covariates. While researchers can do this in different ways, the fixed effects es...
onlinelibrary.wiley.com

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 15h
www.moma.org/artists/3418...
Jacob Lawrence | MoMA
American, 1917–2000
www.moma.org

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 16h
A Family — Jacob Lawrence, 1943.

Happy Thanksgiving to all

www.moma.org/collection/w...

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 1d
Yes, but earthquake, hurricane, and tsunami risks are low.

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 1d
www.wsj.com/politics/pol...
Trump Administration Appoints Vaccine Skeptic as CDC’s No. 2
Louisiana Surgeon General Dr. Ralph Abraham steps into the deputy role
www.wsj.com

Reposted by Timothy Snyder, John Mullahy

nytimes.com
The New York Times @nytimes.com · 1d
Congressional Republicans including Senator Mitch McConnell are openly blasting President Trump’s team of appeasing Russia, warning that doing so would not lead to lasting peace.
Republicans Fight With Trump’s Team Over Ukraine Talks
Senator Mitch McConnell and several other lawmakers accused President Trump’s team of appeasing the Kremlin, warning that doing so would not lead to lasting peace.
nyti.ms

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 1d
Very much looking forward to joining CMS for something wasteful and inappropriate.

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 1d
Characteristically lucid explanations by Justin Sydnor.
pbswisconsin.bsky.social PBS Wisconsin @pbswisconsin.bsky.social · 1d
Watch: 📺 🖥️ 💻 📱 @uwbusiness.bsky.social risk management and insurance professor @justinsydnor.bsky.social explains why the costs of Health Insurance Marketplace plans continue rising and the impacts of uncompensated care.
Justin Sydnor on rising costs for ACA health insurance plans
Justin Sydnor on why the costs of Health Insurance Marketplace plans continue rising.
pbswisconsin.org

Reposted by John Mullahy

pbswisconsin.bsky.social
PBS Wisconsin @pbswisconsin.bsky.social · 1d
Watch: 📺 🖥️ 💻 📱 @uwbusiness.bsky.social risk management and insurance professor @justinsydnor.bsky.social explains why the costs of Health Insurance Marketplace plans continue rising and the impacts of uncompensated care.
Justin Sydnor on rising costs for ACA health insurance plans
Justin Sydnor on why the costs of Health Insurance Marketplace plans continue rising.
pbswisconsin.org

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 1d
RFK Jr. vs. . . .

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 2d
www.wsj.com/health/pharm...
Novo Nordisk Shares Slump After Ozempic Pill Fails in Alzheimer’s Trials
Oral semaglutide—the ingredient in obesity and diabetes drugs Ozempic and Wegovy—didn’t slow Alzheimer’s disease in two late-stage clinical trials.
www.wsj.com

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 2d
December 1950: "With an aging population, medical economics becomes a part of a much larger problem of the need to change our social concepts to fit a new world. People made conscious of the magnificent achievements of American medicine look for more and more. And more and more they will have."

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 2d
"Why Medical Economics?" JAMA, December 9, 1950.

Plus ça change, plus c'est la même chose.

jamanetwork.com/journals/jam...

Reposted by John Mullahy

kffhealthnews.org
KFF Health News @kffhealthnews.org · 2d
The aluminum in vaccines isn’t foil or metal. It’s a compound of aluminum salts. Rather than doing harm, these adjuvants help shots work better.

@celinegounder.com reports ⤵️ kffhealthnews.org/news/article...
Kennedy Sharpens Vaccine Attacks, Without Scientific Backing - KFF Health News
HHS Secretary Robert F. Kennedy Jr. claims that the aluminum ingredients in vaccines cause a variety of harmful reactions, from allergies to autism. Scientists say that’s wrong and warn of risks if th...
kffhealthnews.org

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 2d
"To [Amira] Hakimi, vaping is corny. 'Smoking cigarettes is a very timeless act,' she said."

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 2d
"When vaping became uncool, it paved the path for cigarettes." 🤔

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 2d
www.wsj.com/health/cigar...
Celebrities Are Making Smoking Cigarettes Cool Again
Cigarettes are resurfacing in pop music and movies, raising fears that a yearslong decline in smoking rates could reverse.
www.wsj.com

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 3d
Occasional re-up; somehow seems fitting as Thanksgiving week begins.

poets.org/poem/weighing

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 4d
Seeking the perfect holiday gift for your cherished MAGA loved ones?

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 4d
www.wsj.com/tech/ai/dont...
Don’t Let AI Ruin the Em Dash
In defense of the newly controversial punctuation mark, which has become a target for those determined to root out AI writing.
www.wsj.com

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 4d
“This is a find,” [Ton Koopman] said. “Both pieces are very important additions to the repertory of organ. You analyze the pieces and you see that it can only be a great composer. It’s daring music. It’s someone who knows what harmony is.”

www.nytimes.com/2025/11/19/a...
Newly Discovered Bach Pieces Are the Fruits of Decades of Detective Work
www.nytimes.com

Reposted by John Mullahy

lewis-carroll-bot.bsky.social
Lewis Carroll Bot @lewis-carroll-bot.bsky.social · 5d
“Dear, dear! How queer everything is to-day! And yesterday things went on just as usual.”

johnmullahy.bsky.social
John Mullahy @johnmullahy.bsky.social · 5d
😤 😡 😖 🤨 🤬 🙄

www.theguardian.com/us-news/2025...