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ejwagenmakers.bsky.social

@ejwagenmakers

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13.11.2023
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Latest posts by ejwagenmakers.bsky.social @ejwagenmakers

One weakness Bluesky has compared to Threads is that we simply don’t have as many massive idiots making stupid posts generating screenshot-worthy replies

07.03.2026 04:26 👍 64 🔁 13 💬 3 📌 0
Theory and practice of Bayesian inference using JASP
Theory and practice of Bayesian inference using JASP YouTube video by OPAM Conference

Awesome YouTube tutorial by Johnny van Doorn, "Theory and Practice of Bayesian Inference Using JASP". Link to the video: www.youtube.com/watch?v=VhIm...

Blogpost:

www.bayesianspectacles.org/youtube-lect...

05.03.2026 12:44 👍 3 🔁 3 💬 0 📌 0
Preview
Workshops - JASP - Free and User-Friendly Statistical Software The JASP team is excited to support four workshops this year (2026). Each of these workshops can be attended either in person (at the University of Amsterdam) or online: On Monday August 24th, we orga...

Interested in finding out more about @jaspstats.bsky.social? The Psych Methods Group at the University of Amsterdam is running four hands-on workshops (in person or online) this summer (@ejwagenmakers.bsky.social, @fbartos.bsky.social). More information at jasp-stats.org/workshops/ but to sum up:

26.02.2026 10:23 👍 13 🔁 5 💬 1 📌 0
Preview
Report on the eScience JASP Hackathon in Amsterdam: Plans for an Annual Event - JASP - Free and User-Friendly Statistical Software On 16-17 February 2026 the Netherlands eScience Center hosted a two-day JASP hackathon in Amsterdam. The purpose of the hackathon was to guide participants into developing their very own JASP module, ...

26 participants, 17 new modules...the JASP hackathon was a success and we're looking into making it an annual event!

jasp-stats.org/2026/02/24/r...

24.02.2026 11:53 👍 0 🔁 0 💬 0 📌 0
Preview
‘Don’t go to the US – not with Trump in charge’: the UK tourist with a valid visa detained by ICE for six weeks Karen Newton was in America on the trip of a lifetime when she was shackled, transported and held for weeks on end. With tourism to the US under increasing strain, she says, ‘If it can happen to me, i...

Do not go to the USA.

21.02.2026 09:22 👍 14 🔁 1 💬 0 📌 0
Post image Post image Post image

On 16 and 17 February, the #JASP team organised a #hackathon where 27 participants from 6 countries learned how to contribute to their own modules to the JASP ecosystem!

Special thanks to @ejwagenmakers.bsky.social, @pabrod.bsky.social, Stefan Verhoeven & Zowi Mens for making the event a success!

18.02.2026 15:30 👍 1 🔁 1 💬 0 📌 0

vazul: An R Package for Analysis Blinding: https://osf.io/mp54s

12.02.2026 22:39 👍 3 🔁 2 💬 0 📌 0
OSF

New: "Effect of Artificial Intelligence on Learning: A Meta-Meta-Analysis" by Wagenmakers and colleagues revealing evidence for "severe publication bias and extreme between-study heterogeneity" in existing meta-analyses of the effects of AI on learning: osf.io/preprints/ps...

10.02.2026 14:52 👍 55 🔁 24 💬 1 📌 8

Shameful action on behalf of the editors. Or should we blame Springer? @springernature.com what is your position?

05.02.2026 11:56 👍 2 🔁 0 💬 0 📌 0
Preview
Retraction Note: Cognitive function assessed by Mini-mental state examination and risk of all-cause mortality: a community-based prospective cohort study - BMC Geriatrics BMC Geriatrics -

I hate this: "The Editors have retracted this article... the Mini-Mental State Examination (MMSE) instrument was used without proper permissions" link.springer.com/article/10.1... The MMSE is a series of 11 simple questions. A perfectly good paper is retracted because you can copyright 11 questions

28.01.2026 11:33 👍 42 🔁 13 💬 3 📌 4
Preview
Hybrid Workshop "Discovering Statistics Using JASP", August 24th, 2026 - JASP - Free and User-Friendly Statistical Software We are happy to announce that the JASP team will offer a week of workshops in Amsterdam this summer.  In this blogpost we’ll highlight the first of four workshops: “Discovering Statistics Using JASP“....

"Discovering Statistics Using JASP", the first of four summer workshops, is now open for registration. Join Johnny van Doorn and myself in sunny (well, we can hope) Amsterdam or online!

jasp-stats.org/2026/02/03/h...

05.02.2026 10:55 👍 3 🔁 4 💬 0 📌 0
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Bayesian Thinking for Toddlers: The Cartoon For better or for worse, it appears that my most appreciated work is the children’s book Bayesian Thinking for Toddlers (the intro post is here and an exegesis is here). Piled up in my office…

Bayesian Thinking for Toddlers -- now as a cartoon, courtesy of @viktorbeekman.bsky.social

You can read the cartoon at www.bayesianspectacles.org/bayesian-thi...

04.02.2026 13:25 👍 4 🔁 2 💬 0 📌 0

"So why do journals even bother with mandatory Data Availability Statements, if they do not seem to care what is in them?"
Indeed...difficult to get used to these practices.

03.02.2026 18:30 👍 2 🔁 0 💬 0 📌 0
Promised Data Unavailable? – I’m Sorry, Ma’am, There’s Nothing We Can Do — Meta-Research Center This blogpost has been written by Michèle Nuijten. Michèle is an assistant professor of our research group who investigates reproducibility and replicability in psychology. Also, she is the developer ...

I wrote a blog for the Meta-Research Center expressing my infinite frustration about not getting data. What else is new, you might think? Well, I added an extra layer of annoyance directed at the journals who do NOTHING to enforce promised data sharing.

metaresearch.nl/blog/2026/2/...

03.02.2026 15:03 👍 60 🔁 36 💬 7 📌 4

New preprint by @semihaktepe.bsky.social 🎉

We compare ANOVA/SDT/GLMM for binary judgments in 20 datasets of the truth effect. #lme4

Main conclusion:
"GLMMs are a theoretically sound and practically robust method and thus superior for analyzing binary judgments in social and cognitive psychology.”

28.01.2026 08:10 👍 55 🔁 16 💬 3 📌 3
Preview
Apply for the eScience JASP Hackathon in Amsterdam: Update and Last Call - JASP - Free and User-Friendly Statistical Software On 16-17 February 2026 the Netherlands eScience Center is hosting a two-day JASP hackathon in Amsterdam. The purpose of the hackathon is to guide participants into developing their very own JASP…

#ICYMI: The seats for the Build Your Own #JASP Module #hackathon are quickly running out. It is not only free, we are even offering travel grants!

Want to join us in Amsterdam on 16 and 17 February?
Register here ➡️ jasp-stats.org/2026/01/27/a...

29.01.2026 07:34 👍 3 🔁 2 💬 0 📌 0

Does it mean that AI/LLMs do not help at education? I personally don't think so. I'm using the AI every day and find it incredibly useful. It would be odd if they didn't help at learning at all. However, the current empirical base does not substantiate strong claims.

28.01.2026 20:41 👍 1 🔁 1 💬 0 📌 0
Post image

We just posted a preprint with a comprehensive meta-meta-analysis of the effects of AI/LLMs on learning.

TLDR:
- 1,840 effect sizes
- extreme between-study heterogeneity
- extreme publication bias
- small average effects (three times lower than usually reported)
(osf.io/preprints/ps...)

28.01.2026 20:41 👍 8 🔁 1 💬 1 📌 0
A British Museum photo showing the reverse side of a silver stater coin from the ancient city of Eretria on the island of Euboea, Central Greece. The coin is roundish in shape, and in the centre there is a relief image of an octopus within a recessed square. The octopus has a bulbous head with a small round eye on either side. Beneath the head, eight arms curve gracefully, symmetrically arranged with four arms on each side, curling into a tight spiral at the tip. Diameter: 26 millimetres. Weight: 8.670 grammes. Dated circa 500-480 BC.

A British Museum photo showing the reverse side of a silver stater coin from the ancient city of Eretria on the island of Euboea, Central Greece. The coin is roundish in shape, and in the centre there is a relief image of an octopus within a recessed square. The octopus has a bulbous head with a small round eye on either side. Beneath the head, eight arms curve gracefully, symmetrically arranged with four arms on each side, curling into a tight spiral at the tip. Diameter: 26 millimetres. Weight: 8.670 grammes. Dated circa 500-480 BC.

Ancient Greek silver stater (coin) with an octopus on the reverse side. 🐙

Minted in Eretria, Euboea, Greece, 500-480 BC.

Photo: British Museum www.britishmuseum.org/collection/o...

#Archaeology
#ReliefWednesday

28.01.2026 18:21 👍 461 🔁 106 💬 6 📌 6
Preview
Apply for the eScience JASP Hackathon in Amsterdam: Update and Last Call - JASP - Free and User-Friendly Statistical Software On 16-17 February 2026 the Netherlands eScience Center is hosting a two-day JASP hackathon in Amsterdam. The purpose of the hackathon is to guide participants into developing their very own JASP modul...

Ten new JASP modules -- or perhaps more?

The JASP Hackathon will take place Feb 16-17 at the eScience center in Amsterdam.

This is our last call for applications. Teams are welcome; support to offset travel costs is available.

jasp-stats.org/2026/01/27/a...

27.01.2026 13:10 👍 2 🔁 2 💬 0 📌 0

For JRR it would have to be a reanalysis of a specific study (and there would need to at least one other team to do a different reanalysis)

26.01.2026 20:16 👍 2 🔁 0 💬 1 📌 0
Journal of Robustness Reports The Journal of Robustness Reports The Journal of Robustness Reports (JRR) is a diamond open-access journal that focuses on the reanalysis of high-impact empirical findings. JRR contains collections of...

www.journalofrobustnessreports.org perhaps...

26.01.2026 19:25 👍 2 🔁 0 💬 2 📌 0

Are you interested in adding Bayesian analyses to your next project so you can finally start interpreting your null results? Then join us tomorrow where Dr. Johnny van Doorn from @jaspstats.bsky.social will give a workshop how easy Bayesian stats can be using JASP! Sign up below!

25.01.2026 19:04 👍 11 🔁 7 💬 0 📌 1
US court allows ICE to arrest and pepper-spray peaceful protestors in Minnesota

US court allows ICE to arrest and pepper-spray peaceful protestors in Minnesota

Appeals Court Stays Restrictions on Federal Tactics in Minnesota
The Eighth Circuit granted the Trump administration’s request to block, at least for now, a lower court’s injunction limiting how federal agents interact with protesters in the state.

Appeals Court Stays Restrictions on Federal Tactics in Minnesota The Eighth Circuit granted the Trump administration’s request to block, at least for now, a lower court’s injunction limiting how federal agents interact with protesters in the state.

One court decision, two different headlines.

Guardian on the left, NY Times on the right. Which one more directly conveys information and the stakes to the reader?

22.01.2026 03:30 👍 6337 🔁 2086 💬 133 📌 111

I love my profession deeply, but some of them are not covering themselves in glory these days. If a mob boss draws a sharp blade languidly across your palm and says it would be a real shame for you to lose your pinky, your headline isn't "Godfather rules out hacking off finger to settle debt."

21.01.2026 14:54 👍 288 🔁 120 💬 10 📌 2

That is exactly what you can do with the BF

20.01.2026 16:42 👍 0 🔁 0 💬 0 📌 0

If you want to speak of evidence, it is strictly required to report a BF ;-)

20.01.2026 16:15 👍 0 🔁 0 💬 1 📌 0

"Interest" in SESOI relates to practical use (the P in ROPE). The reason why SESOI for shock therapy is different than for a sugar pill is utility.

20.01.2026 16:10 👍 0 🔁 0 💬 1 📌 0

I do understand that some people misuse SESOIs as a stand-in for a semi-Bayesian prior, encoding it to reflect their design-dependent expectations. But if you want a Bayesian omelette...

20.01.2026 08:45 👍 0 🔁 0 💬 1 📌 0

And you would not change SESOI based on your design, because "interest" is defined in real-world utilities: e.g., how much improvement is worthwhile; this should not depend on the design of the clinical trial.

20.01.2026 08:42 👍 0 🔁 0 💬 1 📌 0