Magnus Johansson

Been reworking my `easyRasch` package for CRAN, and it is finally available. This is also the code base for my jamovi module easyRasch2jmv. pgmj.github.io/easyRasch2/ #psychometrics #rstats #openscience

Normalise emailing people to say you read and enjoyed their work. Academia can be a bleak conveyorbelt of endless negative feedback. Sometimes it's hard to know whether anyone values your work. That's why it means so much when someone takes the time to message and say so! Be that person.

Lea seems like an interesting approach to conference interaction online.

Understanding Maximum Likelihood Estimation, now in 3D!: rpsychologist.com/likelihood #dataviz #stats #rstats

A researcher mapped 335,000+ surveillance cameras across America. Flock's response? Try to take it down. Our response? Build a tool so you can find those near your home: https://proton.me/flock-camera-map

my reaction when a student successfully performs absolutely anything i have taught them

Same five studies. Same treatment effect. One meta-analysis (raw): I² = 0%. Another meta-analysis (SMD): I² = 94%. How can both be right? 🤔 Find out in my latest blog post👇 mzloteanu.substack.com/p/standard-n... #Statistics #MetaAnalysis

So nice to see some sunshine after many days of constant rain here.

Hi all! I'm looking for people to try out my new collaborative writing platform. Think: Overleaf or GDocs for Mkdown LaTeX HTML Typst Quarto Free, open source, and full-featured. Many editors, chat, comments, track changes, history, AI, mobile, templates, etc Would ❤️ any feedback! librepaper.org

If you fit models with glmmTMB(), gratia 📦 has gained support for these model objects, including glmmTMB's nascent capability for fitting penalized spline terms using mgcv's s() You'll need the GitHub versions of both gratia & glmmTMB to try this out #RStats #statistics github.com/glmmTMB/glmm...

This feels like 20x more responsive than Word. It also comes with a builtin Zotero plugin.

New working paper: the Norwegian wealth tax was a huge success. The "exodus" of wealthy people never happened (less than 100 individuals left). Tax revenue increased by 71.5%. No changes in business activity or investment. www.nber.org/papers/w35854

New vignette on the #rstats WeightIt website describing the various weighting methods available and how to choose among them: ngreifer.github.io/WeightIt/art...

they did the thing

Oh my: LibreOffice just made "no AI" one of their official features: blog.documentfoundation.org/blog/2026/09...

link.springer.com/article/10.3...

“Whether idionomically guided treatment does better is itself a causal question about groups, answerable by randomizing patients to idionomically guided or standard treatment.” Well put. (Keep reading “idiotically” though)

Hayes has been banging this drum about idionomic analyses for 6+ years, with folk like @jamiecummins.bsky.social pointing out that its reinventing-the-wheel-but-worse for just as long. My experience is that the ACT community is insufficiently interested and aware of existing methods+stats work.

Our commentary "A Revolution in Search of an Estimand: On the Idionomic Proposal of Hayes et al. (2026)" is now available as a preprint: osf.io/preprints/ps... With @rpsychologist.com, @matti.vuorre.com, and Nils Hentati Isacsson.

This is worth reposting once in a while. bsky.app/profile/rpsy...

Rounding the Horn Terry Watkinson 2020

Version 3.2.2 of my jamovi module for #Rasch #psychometrics is now available. It brings conditional reliability, a Reliable Change Index with exact critical values, and a new targeting figure. The module uses #rstats pkg easyRasch2 v1.3.1 and produces identical results. pgmj.github.io/easyRasch2/

Makina 67 (orange filter) Rollei RPX400@800

Nice campaign by the Norwegian Consumer Council about the declining lifespan of products. Enjoy!

It's right there in the title europepmc.org/article/med/...

It only recently became apparent to me that some psychologists publish "method development" in applied journals, which means reviewers are not properly equipped. Looking at the where this group has published on this topic before makes the pattern clear in this case at least. Why did CPR invite this?

I see this comment a lot: I shouldn't use Bayesian models without a good reason. Frequentist packages (maximum likelihood, etc) are a special case of Bayesian analysis. Bayes can do *any* MLE model plus a lot more. So the question is, what is your justification for restricting yourself to MLE?

Let's say I scrambled together a comment/critique of this paper. Any suggestions on journal that I should submit it to?

Pano triple Saturday Hasselblad Xpan ii Ilford FP4

At a basic level, I think this depends on what you care about. If you want quick pubs for a grade or a promotion, just do t-tests. If you are interested in your data, learn how to fit and interpret ordinal models.

Big news! 🎉 𝚖𝚊𝚛𝚐𝚒𝚗𝚊𝚕𝚎𝚏𝚏𝚎𝚌𝚝𝚜 1.0.0 for #Rstats is out. It’s a big number and it feels like a big step. I wrote a blog on the challenges of interpreting statistical models, SPEED, cool new features, the future, and a 5 year package development and writing odyssey. arelbundock.com/posts/margin...

New ppc_calibration() plots for posterior predictive calibration checks for binary outcome models. Previously we advocated a bootstrap variant. Now new posterior and loo variants by @teemusailynoja.bsky.social and @florencebockting.bsky.social as described in teemusailynoja.github.io/visual-predi...

There is now StanCon 2026 Uppsala playlist www.youtube.com/playlist?lis... At the moment talks by @mjskay.com, @aseyboldt.bsky.social, @paulbuerkner.com, @charlesm993.bsky.social are up, and we'll keep uploading more during the week

I’ve been told for years that it’s legally and ethically impossible to share medical RCT data. In 2024, the BMJ made sharing anonymised data mandatory, and now lots* of folk do it. Interesting how the barriers evaporated like that, isn’t it? *not everyone, compliance problems exist.

Helpful cat also likes the vertical mouse.

I'm so happy to announce version 2.0.0 of my #Rstats package WeightIt is out on CRAN! New features: censoring weights, multilevel propensity scores, improved weights for continuous treatments, bias-reduced ordinal and multinomial models, M-estimation in subgroups Check out the website below!

An astounding 412 (!) #RStats packages made their way to CRAN last month, and @revojoe.bsky.social picked out forty that he thinks you should know about. Check them out on R Works: rworks.dev/posts/june-2...

priorsense R package has now JOSS paper "priorsense: Efficient prior and likelihood sensitivity checks for Bayesian models in R" you can cite, too doi.org/10.21105/jos... with Noa Kallioinen, Topi Paananen, and @paulbuerkner.com priorsense achieved also a gold badge from @ropensci.org review!

Today we launch the first stable release of RegCheck: v1.0.0. RegCheck makes it easier and quicker to compare study registrations to published papers for consistency - something we know is important in principle, but rarely done in practice. A 🧵 on what's new: regcheck.app

Two papers accepted today! Unusual coincidence, but also have a lot of papers under review currently.

‘Polarization’ has become the master concept for diagnosing our current democratic crisis. But this is not polarization. It is the radicalization of the political right. By misdiagnosing it, we risk becoming complicit in the crisis. 🧵 Just out in Perspectives on Politics doi.org/10.1017/S153...

WE ARE HIRING! Come work with us (me + @malte.the100.ci) on developing and validating RegCheck. PhD or postdoc applications welcome. Folk with backgrounds in meta-science, psychology, (pre)clinical trials, and/or economics are especially invited to apply. jobs.unibe.ch/job-vacancie...

We are excited to relaunch our Drawdown Learn program, offering free online courses designed for climate professionals and lay audiences. Currently, we have 3 courses in production: - Living on Planet Earth - Getting Started with Climate Solutions - Exploring Food & Climate Solutions

Happy for Norway! Go for gold!