John Mullahy
@johnmullahy.bsky.social
UW-Madison, Univ. of Galway, NBER
C.V.: https://uwmadison.box.com/s/kkaquhtv5b2og4yo6md5p34f7q7gx1ju
Banner image: Free Clinic (detail), Jacob Lawrence, 1937
C.V.: https://uwmadison.box.com/s/kkaquhtv5b2og4yo6md5p34f7q7gx1ju
Banner image: Free Clinic (detail), Jacob Lawrence, 1937
"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...
— 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
November 26, 2025 at 10:05 PM
"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...
— George Washington, Thanksgiving Proclamation, 1789
www.mountvernon.org/education/pr...
This Thanksgiving I am grateful that we are finally starting to see headlines that read "Congressional Republicans…are openly blasting President Trump"
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
November 26, 2025 at 5:26 PM
This Thanksgiving I am grateful that we are finally starting to see headlines that read "Congressional Republicans…are openly blasting President Trump"
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.
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.
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/...
Important work by @dlmillimet.bsky.social and Marc Bellemare that should influence econometric practice.
onlinelibrary.wiley.com/doi/10.1111/...
November 26, 2025 at 4:27 PM
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.
Reposted by John Mullahy
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.
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/...
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
November 26, 2025 at 4:16 PM
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.
The 1961 Wall St. Journal Thanksgiving editorial grows more relevant with each passing year.
www.wsj.com/opinion/and-...
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
November 26, 2025 at 3:52 PM
The 1961 Wall St. Journal Thanksgiving editorial grows more relevant with each passing year.
www.wsj.com/opinion/and-...
www.wsj.com/opinion/and-...
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
music.wisc.edu/university-o... @uwmadison.bsky.social
November 26, 2025 at 3:27 PM
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
music.wisc.edu/university-o... @uwmadison.bsky.social
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/...
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
November 26, 2025 at 3:14 PM
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/...
Important work by @dlmillimet.bsky.social and Marc Bellemare that should influence econometric practice.
onlinelibrary.wiley.com/doi/10.1111/...
November 26, 2025 at 1:56 PM
Reposted by John Mullahy
English doesn’t have a word for “how manyth” — but Dutch and a bunch of other languages do.
In Dutch you can ask, “How manyth time were you late this week?” and the answer can be simply “the third.”
Check out the whole interview:
🎧 APPLE PODCASTS: bit.ly/4fHkNnw
🎧 SPOTIFY: bit.ly/4oCJju2
In Dutch you can ask, “How manyth time were you late this week?” and the answer can be simply “the third.”
Check out the whole interview:
🎧 APPLE PODCASTS: bit.ly/4fHkNnw
🎧 SPOTIFY: bit.ly/4oCJju2
August 14, 2025 at 9:48 PM
English doesn’t have a word for “how manyth” — but Dutch and a bunch of other languages do.
In Dutch you can ask, “How manyth time were you late this week?” and the answer can be simply “the third.”
Check out the whole interview:
🎧 APPLE PODCASTS: bit.ly/4fHkNnw
🎧 SPOTIFY: bit.ly/4oCJju2
In Dutch you can ask, “How manyth time were you late this week?” and the answer can be simply “the third.”
Check out the whole interview:
🎧 APPLE PODCASTS: bit.ly/4fHkNnw
🎧 SPOTIFY: bit.ly/4oCJju2
Very much looking forward to joining CMS for something wasteful and inappropriate.
November 25, 2025 at 7:23 PM
Very much looking forward to joining CMS for something wasteful and inappropriate.
Characteristically lucid explanations by Justin Sydnor.
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
November 25, 2025 at 4:52 PM
Characteristically lucid explanations by Justin Sydnor.
RFK Jr. vs. . . .
November 25, 2025 at 12:48 PM
RFK Jr. vs. . . .
"Why Medical Economics?" JAMA, December 9, 1950.
Plus ça change, plus c'est la même chose.
jamanetwork.com/journals/jam...
Plus ça change, plus c'est la même chose.
jamanetwork.com/journals/jam...
November 24, 2025 at 8:28 PM
"Why Medical Economics?" JAMA, December 9, 1950.
Plus ça change, plus c'est la même chose.
jamanetwork.com/journals/jam...
Plus ça change, plus c'est la même chose.
jamanetwork.com/journals/jam...
Reposted by John Mullahy
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...
@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
November 24, 2025 at 5:09 PM
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...
@celinegounder.com reports ⤵️ kffhealthnews.org/news/article...
November 23, 2025 at 4:24 PM
Seeking the perfect holiday gift for your cherished MAGA loved ones?
November 22, 2025 at 8:46 PM
Seeking the perfect holiday gift for your cherished MAGA loved ones?
“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...
www.nytimes.com/2025/11/19/a...
Newly Discovered Bach Pieces Are the Fruits of Decades of Detective Work
www.nytimes.com
November 22, 2025 at 2:40 PM
“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...
www.nytimes.com/2025/11/19/a...
Reposted by John Mullahy
“Dear, dear! How queer everything is to-day! And yesterday things went on just as usual.”
November 22, 2025 at 4:08 AM
“Dear, dear! How queer everything is to-day! And yesterday things went on just as usual.”
November 21, 2025 at 10:35 PM
Reposted by John Mullahy
The biggest volcanic eruption ever seen from space, captured by two different satellites on January 15, 2022.
November 21, 2025 at 9:45 PM
The biggest volcanic eruption ever seen from space, captured by two different satellites on January 15, 2022.
Reposted by John Mullahy
We hope everyone flies free this weekend.
BTW, the name Elphaba is a reference to "The Wonderful Wizard of Oz" author L. Frank Baum.
BTW, the name Elphaba is a reference to "The Wonderful Wizard of Oz" author L. Frank Baum.
November 21, 2025 at 4:49 PM
We hope everyone flies free this weekend.
BTW, the name Elphaba is a reference to "The Wonderful Wizard of Oz" author L. Frank Baum.
BTW, the name Elphaba is a reference to "The Wonderful Wizard of Oz" author L. Frank Baum.