The world's earliest recorded outlier? Let me know if you have an even older example! www.jasp-services.com/jasp-for-qua...

AMPPS recently accepted a new paper "Registered Replication Report: Johns, Schmader, & Martens (2005)" on stereotype threat (osf.io/preprints/ps...); full paper is forthcoming on our website). AMPPS is now soliciting Commentary articles on this paper. @psychscience.bsky.social /cont

🔥 First Keynote and Program committe for StanCon 2026 🔥 We present Anna Dreber (Stockholm School of Economics) as the first keynote speaker More information can be found here:

How to donate to JASP (tax-deductable from the US) jasp-stats.org/2025/12/19/j...

How to donate to JASP (tax-deductable from the US) jasp-stats.org/2025/12/19/j...

I've used Lavaan almost every (work)day for 15 years, but this open source labour of love has never received proper institutional support. I'm delighted to be a small part of an 1.5M OpenScienceNL award, led by Jorgensen, to completely revamp and futureproof Lavaan www.openscience.nl/en/news/45-p...

I recently bought 20 bags of potato that, according to the Albert Heijn supermarket, should each contain 1 kg. This turns out to be *false*. www.jasp-services.com/at-the-alber...

Six journals rejected their commentary. Six! Journal system is really lousy in facilitating proper scientific process. @ploederl.bsky.social Diamond OA journal @robustnessreports.bsky.social would be a perfect fit. But I can see why you tried psychiatry journals to reach the audience. Catch22.

If you do what you did, you get what you got. (Meme van Marten Mantel voor Vrij Nederland)

Just had our first set of reviews from @pci-regreports.bsky.social for our proposed study on RT during GLP-1-RA treatment. Probably the most constructive and useful set of reviews I have ever had... and having them before starting the study makes them even better! 11/10 would recommend!

The suspense is building: do the measurements of 20 units indicate that the Albert Heijn underfills its 1 kg bags of potatoes? An interim post on the importance of articulating your predictions *before* seeing the results. :-) www.jasp-services.com/do-the-1kg-a...

Seven-parameter drift-diffusion pdfs and cdfs now in Stan statmodeling.stat.columbia.edu/2025/12/11/s...

SKULL OF THOMAS AQUINAS: TAKE A LEFT NOW PRIEST: No, the GPS says we have to keep going— SKULL: I KNOW A SHORTCUT PRIEST: Do you remember the last ti— SKULL: FOR THOSE WITH FAITH, NO EVIDENCE IS NECESSARY; FOR THOSE WITHOUT IT, NO EVIDENCE WILL SUFFICE

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...

So we bought 20 kg of Albert Heijn potatoes — not to eat, but to test whether the “1 kg” bags really weigh 1 kg. Setup is ready and measurement about to start. Results are coming next week! www.jasp-services.com/you-say-pota...

🇨🇦🇨🇦 Just announced: a massive new program from the Canadian govt, separate from the well-known CRCs and CERCs, to recruit foreign scientific talent Canada was already a destination for scientists but whoa. Real impressive for a new govt to back political talking points with serious investment

Proud of our article, “Bayesian Projection of Extant Refugee & Asylum Seeker Populations,” with Herb Susmann, just published in Demography.

The latest from an honored member of the Royal Society. Every week he attacks the foundations of society in the UK and the EU and @royalsociety.org is apparently too worried about retribution to do anything about it.

A preprint on "pessimistic and optimistic cognitive biases in cockroaches" www.biorxiv.org/content/10.6... A cockroach pessimist believes the trash can is half empty...

Check out our new blogpost with a potential candidate for Robustness Reports! We highlight a study on whether negative words increase online news consumption as a potential candidate for a set of robustness reports. Link: www.journalofrobustnessreports.org/does-negativ...

Preparing this talk gave me an opportunity to reflect on what lessons I've learned from psychology's replication crisis and credibility revolution, and what advice I would have for other fields. We've come a long way! Video: youtu.be/_vb1CNwC3CM?... Slides : osf.io/cuj62/files/...

The EEGManyPipelines Dataset: Metascientific Data on 168 Independent Analyses of a Single EEG Dataset: https://osf.io/c4xwg

This week's blog post features "raincloud plots", a relatively recent development in data visualization. Will the raincloud plot gradually replace the box plot? It just might! Check out the raincloud plot for the planets in our solar system at www.jasp-services.com/jasp-for-qua...

I think that the field needs to clean up the published literature a bit. Additional small studies are not going to move the needle at this point; maybe a couple of large-scale, pre-registered studies might provide more insight?

Starting in about two hours, I’ll be giving a zoom talk about what lessons other disciplines can take from Psychology’s replication crisis. Link to register: univ-cotedazur.zoom.us/meeting/regi...

How do I join

Polish meme translated into English.

The stuff you find when you actually read the RCTs in a systematic review... This paper is one of the foundational studies on vitamin D to prevent respiratory infections in kids. Cited 1,400 times as per Google Scholar.

“The articles in AMPPS offer, month in and month out, the invitation to practice aligning your values, intentions, and actions to do less scientific harm and reach for the methodological ceiling” Grateful to @dsbarra.bsky.social for continuing what @profsimons.bsky.social & co started at AMPPS!

Feb 16-17: JASP Hackathon in Amsterdam! Now open for applications Post with details on the JASP website: jasp-stats.org/2025/11/21/a...

Now this is a new one: My university's license of SAGE journals allows me to view but not to download the research articles. According to ChatGPT read-access costs 100K€ p.a. If you want to make 100% sure that interested readers can access your article, publish it in a #diamondopenaccess journal.

🏆 Individual: @simine.com, psychologist at @unimelb.bsky.social & editor-in-chief of Psychological Science, is recognized for pioneering methodological rigor, reproducibility & collaborative research, driving initiatives such as @improvingpsych.org & the journal Collabra @ucpress.bsky.social. (2/5)

PS is excited to announce the launch of "Individual Differences in Cognition” (IDIC), an open-access journal on research in cognitive psychology, science, and neuroscience. Co-Editors-in-Chief are Andrew R.A. Conway & Michael J. Kane. Manuscripts accepted this spring. More information coming soon!

Getting journal rejections like

It's 2025 and you can still claim an effect with results like this at JAMA Psychiatry. cc @urisohn.bsky.social @lakens.bsky.social @heinonmatti.bsky.social jamanetwork.com/journals/jam...

Former Finnish PM Sanna Marin put it bluntly: “To end the conflict, Russia must leave Ukrainian territory.” Just one point. Nothing more to discuss.

New blogpost on our JRR website! Check out our new blogpost (link below): we highlight a study for re-analysis on whether CEOs are shaped by their daughters. This could be a potential candidate for a robustness report. www.journalofrobustnessreports.org/are-ceos-sha...

New blogpost with a potential candidate for a robustness report! Check out our new blogpost (link below): we highlight a study on a chat tool designed to reduce political polarization as a potential candidate for a robustness report. www.journalofrobustnessreports.org/a-chat-tool-...

The plot thickens in our new blogpost...removing outliers reveals a surprise www.jasp-services.com/jasp-for-qua...

Today's HotFresh recommended paper is: Maier, M., Harris, A. J. L., Kellen, D., & Singmann, H. (2025). Decision making under extinction risk. Cognitive Psychology, 159. doi.org/10.1016/j.co...

"Always plot your data" -- an example of using descriptives *before* measuring capability of an instrument. We intend to have regular posts demonstrating how JASP can be useful for quality control and lean six sigma. www.jasp-services.com/jasp-for-qua...

Why would a for-profit company want to invest in Open-Source Software? Our collaborator, the creator of the statistics software #JASP (@jaspstats.bsky.social), will tell you why 👉 buff.ly/OOz8Y6Y...

Just out: eJAB! Happy to see Jeffreys's work get renewed attention. Blogpost: www.bayesianspectacles.org/from-p-value...

Why would a for-profit company want to invest in Open-Source Software? Our collaborator, the creator of the statistics software JASP (@jaspstats.bsky.social), will tell you why. blog.esciencecenter.nl/8c81bad92d79...

Simulation studies have a conflict of interest problem. The same team: - develops a new method - designs a simulation study to evaluate it However, the new method has to show good performance to get published. We propose living synthetic benchmarks to address the issue (doi.org/10.48550/arX...).

Just 2 hours to go to the Skeptics in the Theatre gig tonight in Bristol: thewardrobetheatre.c...

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.

Today is a day when arts degrees are worthless, but the product of those degrees is so valuable it would kill an entire industry if they were made to pay for it.