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What a time to be alive

Crowd mind: is there some history about why within subjects designs were the obvious design in 19th century psychology, in particular psychophysics? #histsci #philsci

some Bayesian cognitive modeling students are having trouble seeing the industry-relevance of the methods (my worked out examples are research based, since it's what I do). Tips for good industry examples? @ajordannafa.com @natehaines.bsky.social @rmcelreath.bsky.social @avehtari.bsky.social

Follow @mathpsych.bsky.social for updates from the Journal of Mathematical Psychology!

arXiv📈🤖 Combined shrinkage of fixed and random effects in linear mixed models using empirical Bayes By Amestoy, Vermeulen, Wiel et al

Did a thing for the Observer. observer.co.uk/style/featur...

New in Git, ✨ git history ✨ (I don't mean the Git history 🫠 ) 😰 Oh shit, that old commit's message had a typo! 😌 git history reword <commit-id> 😰 Oh shit, that old commit is too big! 😌 git history split <commit-id> (to split it into two commits) github.blog/open-source/... (h/t Hugo Gruson)

Don't be shy to take on a little two-week side project. These five months will be the most precious three years of your academic journey.

There seems to be a broad perception across psychology and neuroscience that work shouldn't be "too technical" in order to reach the broadest possible audience. While I think we should strive for accessibility, I feel that this attitude can also be self-defeating: why are we dumbing down?

Vibecoding this after two years: A Zotero-to-PubPeer integration (alpha, shipping in a few days). Suppose you want to share your comments about specific parts of a report. Just follow five simple steps: 1. Highlight and annotate in Zotero 1/n 🧵

Post Doc at Uni Tübingen! 100% position for 3 (+3) years; they're looking for somebody to analyze large-scale longitudinal datasets in education research. Expertise in machine learning is an advantage, commitment to research transparency desirable 😌 proficiency in German beneficial but not required

Survey research is often interpreted as showing that belief in conspiracy theories can be surprisingly widespread, including belief in conspiracy theories that would be astonishing if true. For example, in The Atlantic we learn that “12 million Americans believe lizard people run our country”

👀 looks like the core Stan folks are pretty bullish on Jax as the software of choice for fitting Bayesian models bob-carpenter.github.io/dj-paper/

AI seems to be the topic of the year — nearly every conversation I have in my role as academic lead for good research practice touches on it in some way. I’d like to lay out my developing thoughts for conversation and critique. (1/7)

Applications are now open for the 12th Model-Based Neuroscience & Cognition Summer School (Aug 10–14, 2026, Amsterdam)! modelbasedneurosci.com Hands-on training in combining Bayesian evidence-accumulation models with reinforcement learning, brain–behavior modeling (EEG/fMRI), BayesFlow, and more.

Because the main code base is now fully in Rust, we can compile it to WebAssembly, and use it to drive a web-based collaborative writing system. This is based on www.automerge.org, and will have both open-source and commercial hosted versions. (3/)

And another Quarto announcement; I've alluded to it before, but we're making it "official". We've started work on Quarto 2. The blog post has an overview: quarto.org/docs/blog/po... We'll share more in future blog posts, but here's what you can expect from the Quarto 2 dev effort: (1/)

Two summer schools focused on skills for cognitive modeling and mathematical psychology will each receive $20,000 grants through this year’s William K. & Katherine W. Estes Fund. @psychonomicsociety.bsky.social Learn more about these projects by @peterkvam.bsky.social & Eric-Jan Wagenmakers.

The 2025 JASP Contributor Award Goes to Mátyás Bukva, for his implementation of the Plot Builder (based on the tidyplots package from Jan Broder Engler). Congrats!! Blogpost: jasp-stats.org/2026/04/01/t...

SCORE, a collaboration of 865 researchers, is now released as three papers in Nature, six preprints, and a lot of data (cos.io/score/). SCORE examined repeatability of findings from the social-behavioral sciences and tested whether human and automated methods could predict replicability.

5. Last but not least, we've been chipping away at `jgd`, a novel + lightweight #rstats graphics device. My original motivation was simply better graphics support in VS Code, but @eitsupi.bsky.social has pushed it much further. CRAN submission imminent. Try it out. github.com/grantmcdermo...

Axios, the most popular JavaScript HTTP client library with over 100 million weekly downloads, was compromised. There was no malicious code, just a fake dependency that runs a postinstall script to deploy a remote access trojan. www.stepsecurity.io/blog/axios-c...

ICYMI: If you work with (sensitive) research data and use Copilot, be aware that, starting April 24, Copilot inputs, outputs, code snippets, and associated context will be used to train its models. You should probably opt out: github.com/settings/cop... Details: github.blog/news-insight...

arXiv📈🤖 E-values as statistical evidence: A comparison to Bayes factors, likelihoods, and p-values By Chugg, Ramdas, Gr\"unwald

Should we use error checking tools like Statcheck and GRIM to automatically check for errors in studies in meta-analyses? I wrote a blog post with some insights from a hackathon where we scrutinized this idea. metaresearch.nl/blog/2026/3/...

CodaNote: Collaborative Markdown/Quarto/Rmarkdown People were looking for collaborating on MD family files with knit rendering... I built this tool for CORE team, works like Google Docs. Opened it to all from internal use so everyone can use it. Feedback welcome! Try: codanote.vercel.app

Coming in R 4.6.0 in April… maybe one of the biggest quality of life improvements to the language in years

Preprint alert: Simulation-based validation of Bayes Factor computation with @paulbuerkner.com and S. Stroppel. We bring lessons learned in SBC to validation of BFs. arxiv.org/abs/2508.11814 The idea is simple: simulate data from the models, fit and see if the inferences are calibrated. 1/10

I made a tiny tool for quickly sharing small datasets (< ~1000 rows) without uploading any data to a server. 🔗 ziptbl.com It compresses the data into the link itself, so there’s no account, hosting, or storage layer involved. Here's Florence Nightingale's famous 📊 data: ziptbl.com#d=eNpdlE-LGz...

The fee to publish an open access paper at Trends in Cognitive Science is now over $7,000. Seriously, @elsevierconnect.bsky.social ??? For a 4,000 word piece? Talk about a broken system.

That can be fine when external pressures are low (sure, take the time to hire and train a student to do the work; and maybe something interesting & surprising will come out of their unique involvement). But it crumbles in the current job/funding environment (where you need expert work done now).

Like many things about AI, this mainly reveals and amplifies an existing quirk of the system. Professors are supposed to both do the best research (and as much of it and as fast as possible) while also working nearly 100% with trainees, whose growth & interests need to be prioritized.

🏆 @simine.com, psychologist at @psychunimelb.bsky.social / @unimelb.bsky.social and Editor-in-Chief of Psychological Science (@psychscience.bsky.social) is a leading voice in the reform movement in psychology - and is now being honored with the €150K Individual Award. Huge congratulations! 🎉

New Paul Meehl Graduate School workshop announced: Computational Cognitive Models paulmeehlschool.github.io/2026-03-10-c... Please note that the workshop will be exclusively in-person on April 20, 2026.

We're thrilled to open registration for the Utrecht Replication Games. The event will be at the at the University of Utrecht on June 4th. Psych, public health, pol sci and econ studies will be reproduced! Register here: www.surveymonkey.ca/r/Replicatio...

Are episodic and semantic memory really that different? Using closely matched tasks, we found no substantial neural differences between recalling personal experiences and general knowledge: https://www.nature.com/articles/s41562-025-02390-4

Our institute is hiring 1. an assistant professor (with TT) for Social Psychology (focus: environmental psychology) ohws.prospective.ch/public/v1/jo... 2. an assistant lecturer (with TT) for Experimental Personality Psychology ohws.prospective.ch/public/v1/jo...

Bots have made their way to Prolific experiments. Our lab has stopped online testing of adults entirely now for this reason - we want to know if what we study is real. Probably data collected 2-3 years ago are ok, but moving forward we just can't know. www.pnas.org/doi/10.1073/...

Are you passionate about teaching #statistics? Would like to have a permant #job in #academia? Are you fluent in #English and #German? Do you want to become a senior lecturer @uni-graz.at? Apply!: jobs.uni-graz.at/de/jobs/3cb1...

Postdoc Position in Social and Organisational Psychology at University of Cologne Application deadline: 15 February 2026 More info: jobportal.uni-koeln.de/ausschreibun... #SocialPsyc #PhDSky

Approximate Bayes Factors Are Approximate E-Processes: https://osf.io/97e2w

On why the motherhood penalty may be overestimated. Simply put: The identifying variation comes from women having kids at different points in time, which might not be a valid counterfactual. open.substack.com/pub/plausibl...

"Theory and Practice of Bayesian Hypothesis Testing with JASP", the last of four summer workshops, is now open for registration. Join Richard Morey and myself in Amsterdam or online! (August 27 & 28) jasp-stats.org/2026/02/09/h...

I made a map of 3.4 million Bluesky users - see if you can find yourself! bluesky-map.theo.io I've seen some similar projects, but IMO this seems to better capture some of the fine-grained detail

🧵 New WP with @kaimiele.bsky.social. We document 2 unsettling patterns in mental health care: 1) despite universal coverage, few individuals with mental illness receive guideline-consistent treatment, and 2) the more severe the illness, the lower the treatment uptake & the longer the wait times. 1/n

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

Oops. repo! github.com/eitsupi/arf

as I'm revising my course materials, I keep stumbling upon cool @mc-stan.org developments. Current favorites: 1. your model has funnels and you exhausted reparametrization ideas: metric = "dense_e" makes your HMC learn about covariance btw parameters. Sloooow, but effective! 1/