You need to bring in the same toolkit as in studies that try to establish causality without randomization. I know it sounds unfair, but I don’t make the rules. These situations are instances of post-treatment bias, if you want to read up on it as a psychologist:

Babbage, 1830, discussing the problem that scientists selectively report findings that they want to be true. Confirmation bias is a strong human tendency. This is why we need to design science in a way that prevents conformation bias from leading us away from the truth.

Have I ever mentioned how surreal it is to be an Editor-in-Chief of a journal called Vaccine right now? www.science.org/content/arti... It’s pretty wild, at least by typical academic journal editorial office standards.

Die, Dichotomy. www.linkedin.com/pulse/die-di... A brief post encouraging you to read the original paper with @erik-van-zwet.bsky.social and @f2harrell.bsky.social . onlinelibrary.wiley.com/doi/epdf/10....

Guinea-Bissau suspends a US-funded vaccine trial as African scientists question its motives www.nature.com/articles/d41...

I'm teaching Statistical Rethinking again starting Jan 2026. This time with live lectures, divided into Beginner and Experienced sections. Will be a lot more work for me, but I hope much better for students. I will record lectures & all will be found at this link: github.com/rmcelreath/s...

... and another www.theguardian.com/society/2025...

CDC funds controversial hepatitis B vaccine trial in African newborns | Science | AAAS www.science.org/content/arti...

When I take train journeys, I sometimes write things. Things that I probably shouldn't publish

Subscribe to @theatlantic.com And always read @anneapplebaum.bsky.social

Preregistrations without Code do not Prevent P-Hacking: You can increase your chances for a significant finding in the absence of real effects even with correlations and t test despite having preregistered your hypothesis (e.g., simply changing arguments in the functions). doi.org/10.31222/osf...

S-Values are much more interpretable than P-values, yet adoption seems near impossible. I wonder what it would take to make the leap? #statssky #episky #rstats #statistics

... and our paper is available here: www.sciencedirect.com/science/arti...

What is the most profitable industry in the world, this side of the law? Not oil, not IT, not pharma. It's *scientific publishing*. We call this the Drain of Scientific Publishing. Paper: arxiv.org/abs/2511.04820 Background: doi.org/10.1162/qss_... Thread @markhanson.fediscience.org.ap.brid.gy 👇

New paper out rdcu.be/ePj0e

How can we reform science? I have some ideas. But I am not sure you’ll like them, because they don’t promise much. elevanth.org/blog/2025/07...

Forsker: Nyt udspil lover risikovillig forskning – men systemet hæmmer potentialet - Altinget www.altinget.dk/forskning/ar...

Forsker: Debatten om frie og bundne midler er blevet en skyttegravskrig - Altinget www.altinget.dk/fonde/artike...

Against Publishing: universonline.nl/nieuws/2025/... Preprints are read, shared, and cited, yet still dismissed as incomplete until blessed by a publisher. I argue that the true measure of scholarship lies in open exchange, not in the industry’s gatekeeping of what counts as published.

Did humans evolve to 'protect' women? traditionsofconflict.substack.com/p/did-humans...

This only happens to you once

Simonsohn has now posted a blog response to our recent paper about the poor statistical properties of the P curve. @clintin.bsky.social and I are finishing up a less-technical paper that will serve as a response. But I wanted to address a meta-issue *around* this that may clarify some things. 1/x

There is, I believe, only one correct answer to this problem.

Paul Feyerabend, Against Method. Prescriptions about how science MUST be done? Simply a bad, authoritarian idea. And based on the history of science, not good for scientific progress. #metasci

Being a social scientist means holding two truths at once: 1. This is all deeply complicated 2. I have to submit something by Tuesday

Gender disparity in funding rates in double-blind grant peer review: The case of the Villum Experiment url: direct.mit.edu/qss/article/...

Easy there, Tiger.

AI, Materials, and Fraud, Oh My! open.substack.com/pub/thebsdet...

This, from Timothy Snyder, is definitive, on Greenland open.substack.com/pub/snyder/p...

En af de mest komplette oversigter, jeg har set mobilsiden.dk/nyheder/it-t...

Why academia is sleepwalking into self-destruction. My editorial @brain1878.bsky.social If you agree with the sentiments please repost. It's important for all our sakes to stop the madness academic.oup.com/brain/articl...

Since writing this article, I have received messages from federal civil servants who tell me it is accurate, and that they are frightened. Please share this with anyone who doesn't understand the scale of the transformation. www.theatlantic.com/ideas/archiv...

Over de seneste dage har jeg udbygget min liste over danske/europæiske/australske/canadiske alternativer til Meta, X, Google, ChatGPT, Netflix og meget mere - software, sociale medier, streaming, hardware. Enjoy 🙏

Given that the Trump people did nothing to induce Russia to end the war, it’s fair to conclude that the whole idea of pursuing peace was just a pretext to renew relations with Russia.

Trump’s disgusting behavior in our Oval Office in the company of a genuine hero and defender of democracy like Volodymyr Zelensky may be the most disgraceful public behavior by any president in our history.

Here I react to the shameful encounter between American leaders and media and the Ukrainian president. No doubt there were more, but I saw five failures on our side: of hospitality, decency, democracy, strategy, and independence. Please watch and share. snyder.substack.com/p/five-failu...

As a humanitarian aid worker, 28-year-old Edward Scott has made multiple trips to the front-line areas to evacuate civilian Ukrainians. But the mission on Jan. 30 to the embattled city of Pokrovsk in southern Donetsk Oblast was different.

You prob follow @3blue1brown.bsky.social already. This latest video is great. I watched it with my son, who saw how all that middle school trig he learned solves important astronomy problems. I just wish he had learned it with these examples instead of "how tall is the tree". youtu.be/YdOXS_9_P4U

For no reason that he can articulate, Trump has triggered a crisis in Denmark www.theatlantic.com/internationa...

Revisiting this 2019 article bec it makes me feel less lonely in this fight abt what replications are/aren't. The default expectation of replication based on inferential methods is fraught as it ignores the fact that inference is just as much abt the assumptions. www.tandfonline.com/doi/full/10....