Daniel Lakens

🚀 Kicking off the upcoming month with a fresh round of online talks! First up: Alessio Farcomeni
🎙 Join us next Friday, October 10 at 13pm (CEST), for "A brief introduction to quantile regression". Don’t miss it! 🔍📊

Only one of these two is what you are paid for by the tax payer, so that should be relatively simple 😏

It was so very nice to show you around! Thanks for coming to Rotterdam!

Daniel and Brent in Rotterdam

I went to Rotterdam for a reproducibility therapy session with @lakens.bsky.social. I am happy to report that the patient is doing much better—maybe due to a placebo effect. Who knows.

Doing the right thing, just because it is the right thing is underappreciated by academics.

People sometimes say they do not have time to do open science. But they can use the time they would have needed 40 years ago to send and request paper copies of articles to read the literature.

Somehow we never acknowledge where we gained time that we can invest in open science.

People kept buying incandescent light bulbs, even though LED lights were better for the environment and cheaper in the long run. But incandescent light were cheap in the short term. In the end, the EU had to ban incandescent lights.

The adoption of Open Science works same.

I love the idea that we’ll see change in clinical psych re: open science adoption when the messaging tone changes. lol.

Why not my 2 part overview, showing it in historical context?

rips-irsp.com/articles/10....

rips-irsp.com/articles/10....

I think it will make it clear to readers this is a longstanding serious and systemic problem.

LMU Munich invites applications for a W2 Professorship in Philosophy Education, starting in October 2026. We are looking for candidates with an outstanding research record in philosophy and a strong profile in philosophy education.
Deadline: 15 November 2025:
job-portal.lmu.de/jobposting/b...

Thanks!

Really nice example if you want to explain why statistical significance does not equal practical significance.
N = 200,000, effect size r = .05. Good enough to support the null-hypothesis with equivalence testing. @lakens.bsky.social

I have updated the blog post with a long reply y Andrew Gelman, in which he clarifies he still recommends the regular use of Type S and M errors. daniellakens.blogspot.com/2025/09/type... This makes our preprint criticising Type S and M errors all the more important.

I am really looking forward to having so many excellent meta-scientists over for the Paul Meehl Graduate School symposium. It looks like this year will be even more fun than last, with interesting talks and lots of opportunity to network.

Type S and M errors as a “rhetorical tool” We recently posted a preprint criticizing the idea of Type S and M errors ( https://osf.io/2phzb_v1 ). From our abstract: “While these conce...

New blog post on Gelman's recent claim that Type S and M errors are intended as a 'rhetorical tool', and if I was wrong to believe they were recommended more routinely in our recent preprint criticizing the idea of Type S and M errors. daniellakens.blogspot.com/2025/09/type...

Type S and M errors as a “rhetorical tool” We recently posted a preprint criticizing the idea of Type S and M errors ( https://osf.io/2phzb_v1 ). From our abstract: “While these conce...

New blog post on Gelman's recent claim that Type S and M errors are intended as a 'rhetorical tool', and if I was wrong to believe they were recommended more routinely in our recent preprint criticizing the idea of Type S and M errors. daniellakens.blogspot.com/2025/09/type...

Congratulations! Very deserved!

Extremely honored to recieve Oslo New University College's science award for 2025. ONH has been a fantastic base to conduct my research at for the past 4 years, and I have an amazing team of colleagues around me to thank for that. From the bottom of my heart, thank you all!

Famous Trick Donkeys - Wikipedia

en.wikipedia.org/wiki/Famous_...

Oh, how cool, so they adapted it from this much earlier image! Thanks for letting me know!

You would have a 100% error rate if you did that.

Position part B of the image on top of part A in such a way that the 2 riders are sitting on top of the horses, right side up.

From Scheerer, Goldstein, and Boring, 1941 doi.org/10.2307/1417...

(answer in the reply)

New Grandbrothers album is out! For anyone who likes the opening tune of our Nullius in Verba podcast, give them a listen, or even better, just get a copy because the record is great!

Do you mean that you can visually see if a test would reject? That is true and correct, but, a plot is big, and numbers small. Or do you mean you can ad hoc reject effects outside the CI? That would be incorrect.

I am sorry, I do not understand that sentence.

Gelman all of a sudden calling Type S and M errors 'rethorical devices' after we pointed out how flawed his ideas were osf.io/preprints/ps... reminds me too much of Daryl Bem saying data was a rethorical device to support pre-cognition.

Maybe both could have added this to their original articles?

You have not seen second generation p-values used anywhere because they were badly reinvented equivalence tests, and people should use equivalence tests instead. See open.lnu.se/index.php/me...