Director of Research, Do No Harm. Senior Fellow, Defense of Freedom Institute. All opinions are my own.

Jay P. Greene retweeted
My guest on the Karol Markowicz Show today is @jaypgreene! We talk the huge wins in school choice, why Jewish institutions could experience a renaissance, how we’re fighting antisemitism all wrong and more! Listen anywhere: omny.fm/shows/the-karol-mark…
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Jay P. Greene retweeted
One can keep on believing that birth rates aren’t important, or that the explanation for this phenomenon is because the Jews are demons or whatever — but for everyone else, some facts:
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Jay P. Greene retweeted
BREAKING: An advisory panel on accreditation has recommended that the Department of Education suspend the American Psychological Association (APA) for 12 months amidst concerns about ideological standards on DEI, gender-related treatment, and especially antisemitism. After hearing from several groups during a meeting yesterday, the National Advisory Committee on Institutional Quality and Integrity’s (NACIQI) voted to make the recommendation. The recommendation now goes to the Department of Education for a final decision.
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Jay P. Greene retweeted
What an extraordinary day for @usedgov, under leadership of @EDSecMcMahon @Linda_McMahon, sending a powerful message not only to the APA but to the entire higher education field: anti-Semitism will not be tolerated. Kudos to NACIQI, incl. @jaypgreene @AdamKissel Robert Eitel. Kudos also to my colleagues at @brandeiscenter for their extraordinary work on this, incl. Deena Margolies @kpbarall Jimmy Brandt Rebecca Harris Denise Katz-Prober Omer Wiczyk. lnkd.in/eAc_vKBc
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Reminder: US schools serving low-income and non-white communities get more money per pupil not less and have for a long time
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Jay P. Greene retweeted
I worked on this for YEARS and am finally able to share it: One of the biggest obstacles for Jewish people fighting antisemitism has been a problem recognized by countless scholars over many years: Jews are notoriously difficult to categorize into a single group or even 2 or 3 clearly identified protected classes under the law. Worse still, many Jews themselves don’t know how exactly how to describe their Jewishness or how they fit in. This has presented a serious and frustrating problem both in every day life (often causing internal strife between Jewish groups themselves), and in courtrooms across the country where dismissal of antisemitism-based cases have too often hinged on courts misunderstanding who we are as a people. We know that Jews are not a monolith. But what are we? Who are we? In my piece just published in @Commentary Magazine, I present what I consider the seminal work of my life. I ask, “who are the Jewish people, really?” What took me many years to discover is actually remarkably obvious when you see it. It is a universal truth that simply needed to be discovered and explained. I introduce the reality that Jews fit quite neatly into 5 categories of people and present my P.R.I.Z.E. framework: the first-ever mapping of the five Authentic dimensions of Jewish identity. I hope you will consider reading it, sharing it, and debating it. I have given some “pre-talks” about P.R.I.Z.E. leading up to this paper and the single most frequent and gratifying comment I receive afterwards has been, “thank you so much-- I have known I am Jewish all my life, but this is the first time I know how to explain it.” Gets me every time. commentary.org/articles/jeff…
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Jay P. Greene retweeted
Just picked up a copy of today’s @nypost and saw my piece appears alongside essays with @karol @jaypgreene and @PeerReReview. I’ve outkicked my coverage again.
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Jay P. Greene retweeted
9/ We present three models in our report that all produce null findings. We tinkered with these and other model specifications. Not a single one produced a significant result. It’s so clearly null that no amount of manipulation is going to produce a significant effect.
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Jay P. Greene retweeted
10/ Our analysis is not the last word. Other researchers can and should employ different models and incorporate new data as it becomes available.
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Jay P. Greene retweeted
1/ “gender affirming” medical interventions are permanent & biologically harmful. Ethically, the only possible justification to subject kids to medical transition is the threat that denying these interventions risks even greater harm. And that’s precisely what activists argue. 🧵
New study by @PeerReReview and me on whether state restrictions on puberty blockers, hormones, and surgeries for minors increased the rate of teen suicides. We used multiple analytic techniques on CDC data and find no evidence of an increase. donoharmmedicine.org/2026/09…
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Jay P. Greene retweeted
The self-harm narrative regarding trans-identifying youth has long been used to justify access to "gender-affirming care." However, is this actually true? A new study finds that restricting these treatments for minors isn't associated with an increase in self-harm. 🚨 Find out why 👉
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New study by @PeerReReview and me on whether state restrictions on puberty blockers, hormones, and surgeries for minors increased the rate of teen suicides. We used multiple analytic techniques on CDC data and find no evidence of an increase. donoharmmedicine.org/2026/09…
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Jay P. Greene retweeted
"Published research by medical students continues to proliferate despite concerns about the quality of the work, according to a new report. 'Why Johnny Can’t Stop Writing: The Boom in Low-Impact, Politicized Medical Student Research,' authored by Do No Harm’s Jay Greene, highlights the proliferation of low-quality medical student research in the past 20 years. The researcher offered potential solutions in original comments sent to The College Fix. Greene found that in the early 2000s, fewer than 12 publications listed students as authors or co-authors, but in the 2020s, more than 700 publications could claim medical student authorship... " Read the full article from The College Fix linked in the comments 🔗
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Jay P. Greene retweeted
A lot of what does get published is woke slop, as @jaypgreene discovered. The push to have students engage in research is a real mistake. realclearpolitics.com/articl…
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This pattern started with DEI staff as @james_d_paul and I observed and has now trickled down to students. heritage.org/education/repor…
Incoming Yale freshmen are less critical of China than Israel. Asked about their views on the two countries, 62.8% said they are critical of Israel, while only 35.4% said they are critical of China. 8% said they support Israel and 13.5% said they support China. 14.2% said they are neutral on Israel compared to 35.1% on China.
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