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Quentin André @quentinandre.bsky.social · 08/09/2026

Hilarious stuff from hypocrite-in-chief Bill Ackman, currently bankrolling Francesca Gino, who has *check notes* sued three brave scholars for telling the truth.

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Quentin André @quentinandre.bsky.social · 06/08/2026

I'm sorry but this is so funny and sad at the same time. A pure distillation of r/thathappened, made a memoir.

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Quentin André @quentinandre.bsky.social · 17/07/2026

This is not any study. This is the study that, according to @olgakhazan.bsky.social's reporting, launched the field in the direction of "alcohol consumption in male can lead to adverse effects". And its conclusions are derived from completely erroneous statistical analyses! 10/N

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Quentin André @quentinandre.bsky.social · 17/07/2026

Again, you don't need to be a statistical genius to figure out that a degree of separation like this can only emerge from a procedure that AIMS at maximizing separation. Completely circular reasoning. 8/N

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Quentin André @quentinandre.bsky.social · 17/07/2026

Any statistican who has seen this before (insanely small p-values with small N) knows the most likely culprit: "Pseudoreplication", when non-independent observations are analyzed as if they were independent. Claude Opus 4.8 provides an exellent summary of the issue. 5/N

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Quentin André @quentinandre.bsky.social · 17/07/2026

Yet the effects on morphological differences are HUGE. I'm talking p = 2.1 × 10⁻⁵⁴. This alone should raise a giant red flag: How can the downstream effects of alcohol availability be several dozens of magnitudes larger than the upstream effects? 4/N

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Quentin André @quentinandre.bsky.social · 17/07/2026

Let's start with the effect size. This figures shows the "manipulation check": The dose of ethanol consumed by the sire. As you can see, the direction is as expected, but the intermediary contrasts (low vs. medium, medium vs. high) barely cross the .05 threshold.

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Quentin André @quentinandre.bsky.social · 17/07/2026

I wish journalists reported more carefully on science. I really do. A short thread. The study cited at in the intro of this article is a mice study. Researchers randomize male to have access to a low/med/high amount of ethanol... 1/N www.theatlantic.com/family/2026/...

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Quentin André @quentinandre.bsky.social · 06/01/2026

This hasn't received much attention, but it looks like scammers also hacked into Francesca Gino's MTurk account, and asked MTurkers to buy her book Rebel Talent to boost the first-week sales of the book. Poor lady cannot catch a break. (links in comments)

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Quentin André @quentinandre.bsky.social · 01/11/2025

Halloween is the best holiday. Change my mind.

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Quentin André @quentinandre.bsky.social · 30/10/2025

When it's Halloween, but your 2.5yo daughter insists that "we should bring the skeleton inside" and "make it cozy with a blankie and a pillow".

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Quentin André @quentinandre.bsky.social · 22/10/2025

Oh my god thank you! I needed it the other day and could not find it, so I recreated a worse one in PowerPoint...

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Quentin André @quentinandre.bsky.social · 03/10/2025

If, as a reviewer, you see an unusual statistical test being reported in a manuscript, it never hurts to double-check whether the test does what the authors claim. Who knows, it might help a journal not publish inaccurate results.

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Quentin André @quentinandre.bsky.social · 08/07/2025

More from HBS' Amended Complaint. They claim to have evidence that Gino backdated a fabricated file to exonerate herself.

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Quentin André @quentinandre.bsky.social · 08/07/2025

Do you remember Francesca Gino's claim on her website that HBS analyzed the "wrong data file" in their investigation, and that a "real file" proved her innocence? HBS is now claiming that the "real file" was fabricated by Gino... and thus that Gino's claim was defamatory.

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Quentin André @quentinandre.bsky.social · 21/05/2025

Two very skeptical birds on my hike today.

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Quentin André @quentinandre.bsky.social · 10/05/2025

Data Colada has submitted a motion for sanction against Francesca Gino and her former lawyer team. I hope the court rules in their favor. It will be a powerful message that sleuths can expose fake research without fearing legal consequences. storage.courtlistener.com/recap/gov.us...

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Quentin André @quentinandre.bsky.social · 09/04/2025

Bill Ackman has a humiliation kink. There's no other explanation that makes sense.

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Quentin André @quentinandre.bsky.social · 28/03/2025

In the midst of all this shittiness, I'm grateful for the desert and for birds.

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Quentin André @quentinandre.bsky.social · 14/03/2025

Update on this: The Supplementary Materials report an attrition analysis showing that excluded and non-excluded participants do not significantly differ in some aspects. This contradicts my hunch that "the most depressed participants" were excluded... So all good then?

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Quentin André @quentinandre.bsky.social · 13/03/2025

Not everybody is as skeptical as I am 🤷.

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Quentin André @quentinandre.bsky.social · 11/03/2025

At first glance, the paper looks pretty rigorous: Pre-registrations! Open data and materials! FDR-corrected p-values! Independent replications! So where's the problem? I suspect the answer lies in the sentence highlighted below:

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Quentin André @quentinandre.bsky.social · 14/12/2024

A similar idea was expressed by Trump earlier this week, when he came out against machinery on docks. However, this thinking neglects the second-order effects of labor replacement. It is undeniable that automation destroyed many factory and farm jobs... 2/3

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Quentin André @quentinandre.bsky.social · 30/11/2024

Going into my "hedonic adaptation" slide.

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Quentin André @quentinandre.bsky.social · 26/11/2024

Finally in print! We discuss the value of group sequential designs: They make hypothesis testing more informative and more cost-effective; and we offer simple guidelines on how to adopt them. Nick and I have been doing brown bags/webinars on it: Let us know if you are interested or have questions!

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Quentin André @quentinandre.bsky.social · 04/11/2024

Facebook: "Here's your memory from 8 years ago!"

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Quentin André @quentinandre.bsky.social · 22/02/2024

In this 2013 interview, he recounts analyzing a complex dataset himself and "creating everything" (Freudian slip)? Anyway, if we counted self-contradicting statements he'd have lost his job a long time ago. indecisionblog.com/2013/08/17/r...

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Quentin André @quentinandre.bsky.social · 23/12/2023

Grades submitted, back to birding! American Kestrel, the smallest falcon in North America.

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Quentin André @quentinandre.bsky.social · 08/11/2023

Gino's lawsuit sure is a rollercoaster.

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Quentin André @quentinandre.bsky.social · 18/10/2023

POV: The closets of the seven anonymous HBS profs.

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Quentin André @quentinandre.bsky.social · 10/10/2023

We also formalize the conditions under which PRIADs are more efficient (i.e., achieve the same power with a smaller expected N) than Fixed N designs. Whenever researchers have more than ~25% power to detect an effect, PRIADs start being more efficient. 5/6

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Quentin André @quentinandre.bsky.social · 10/10/2023

Even under the conservative assumption that all "failed" studies (i.e., studies that were significant with a Fixed N but were not with a PRIAD) would be re-run with twice the sample size, PRIADs would have saved between 32 and 43% of the participants' cost! 4/6

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Quentin André @quentinandre.bsky.social · 10/10/2023

PRIADs would have often yielded significant results at the interim stage(s), while sacrificing little statistical power overall: 84% to 100% of the studies that were significant with the "Fixed N" approach remained significant with PRIADs. What does this imply for savings? 3/6

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