👉 An exciting PhD position is available at the MPI for Human Development to work with LIP colleague @sarahdpower.bsky.social on the WildBrain project. See www.mpib-berlin.mpg.de/2366555/2026.... #PsychSciSky #neuroskyence

Cohen’s d is one of the most widely used ways to communicate mean differences across studies. But what, exactly, is it telling us? A perspective on detectability of effects -- just out in PARE: openpublishing.library.umass.edu/pare/article... #openaccess

Up to age 60, adult brain volume completely dominated by stable individual diffs. At 80 yrs, up to 50% reflects differences in change. Interpretation: 1) We change similarly up to 60. 2) Group comparisons often not reflecting changes. @Edvardosg @LCBC_UiO direct.mit.edu/imag/article...

Just gave my last talk of the year! 2025 was quite packed, I gave talks about: - the age-period-cohort problem - making rigorous causal inference more mainstream - mediation analysis - marginaleffects - causal graphs (x10) If you're curious, check out my slides here: juliarohrer.com/resources/

What your audience is thinking about at your conference presentation. Cartoon from @upmicblog. #PhDchat #ECRchat #postdoc #gradschool

@nature.com made a news piece on our new @pnas.org paper. Good job Anne Ravndal! Men’s brains shrink faster than women’s: what that means for Alzheimer’s. www.nature.com/articles/d41...

#DataMethods #OpenScience #GESISMethodsHub: An open portal for computational social science research—find tools, tutorials, and code, directly usable in your browser. Methods Hub makes it easy to learn, apply, and reproduce computational methods in the Social Sciences. methodshub.gesis.org/#DataMethods#OpenScience#GESISMethodsHub:

Psychological Methods is looking for Editorial Fellows. We are looking forward to applications of early-career psychologists who will bring experiential diversity to their work. If you are interested, reach out to me or directly apply here to work with a wonderful team: www.apa.org/pubs/journal...

Anke Schneider and I put together a short brochure on sample size planning, aimed at Bachelor psychology students. Our goal: help students justify their sample size plan (other than just relying on defaults) and help avoid common pitfalls. 🚀 For now, it’s only available in German. osf.io/n46vg/

A new preregistration template for simulation studies is now live on OSF. Thanks to the creators and the preregistration template working group for proposing and shepherding this to make it available to users. See the post if you would like to propose a new template. www.cos.io/blog/introdu...

New preprint: Stop thinking of Cohen's d as an effect size. Cohen's d confounds magnitude of effect and reliability. Yet, we pretend our measurements are flawless when interpreting it. What if we thought of Cohen’s d as a measure of detectability instead? osf.io/preprints/ps...

New study out in Nature Medicine: Education does not protect against age-related decline of memory. Read more here: Reevaluating the role of education on cognitive decline and brain aging in longitudinal cohorts across 33 Western countries www.nature.com/articles/s41...

In my latest (and last!) column for Science’s Expert Voices series, I write about the reasons behind AI chatbots’ “deceptive” behaviors (and why Claude threatened a fictional CEO with blackmail). www.science.org/doi/10.1126/...

Want automated reproducibility checks for your R Markdown docs on GitHub? reproducibleRchunks v1.2.0 is now on CRAN! ✅ Generates GitHub Actions for cloud-based reproducibility checks (with cool badges) 📦 Supports renv for dependency management 👉 cran.r-project.org/package=repr...

love when a paywall sounds like it’s drawing a gun on you

Finally: Ecologically valid MRI studies. Seen at Max Planck Campus of Cognition #noai

Interested in the latest metascience? Come to Eindhoven October 17th to listen to Dr. Duygu Uygun-Tunç (University of Chicago) and Dr. Lisa Spitzer (Leibniz-Institut für Psychologie) as keynote speakers, and Dr. Aaron Peikert for a workshop collaboration through Git! All free!

The German Research Foundation @dfg.de publishes the English edition of their Funding Atlas!

Thrilled to see our TinyRNN paper in @nature! We show how tiny RNNs predict choices of individual subjects accurately while staying fully interpretable. This approach can transform how we model cognitive processes in both healthy and disordered decisions. doi.org/10.1038/s415...

CRAN release of reproducibleRchunks v1.1.0 - now with full support of all standard knitr code chunk options. There are also some example vignettes to get you started: brandmaier.github.io/reproducible... or just read our Open Access article in Collabra: Psychology: doi.org/10.1525/coll... #rstats

@anoukbouma.bsky.social makes wonderful remarks on how scientific software often misses users' need. Where is the: "Design, test, and iterate" cycle in scientific software?

A few months ago, Nature published how-to guide for using ChatGPT to write your peer reviews in 30 minutes. This is, of course, a horrible idea. Here’s my response with @jbakcoleman.bsky.social .

PCI Psychology is here!! 🎉🥳 After over a year of hard work by so many people, we are thrilled to announce that we are open for submissions! Join us in making publishing more efficient, equitable, and open: psych.peercommunityin.org #PsychSciSky #scipub

What? How? Why?

Out now in Collabra: Psychology: Automated Reproducibility Testing in R Markdown. The R package reproducibleRchunks, which stores metadata about original computational results and verifies later reproduction attempts automatically. online.ucpress.edu/collabra/art...

New paper in Imaging Neuroscience by Didac Vidal-Piñeiro, Anders M. Fjell, et al: Reliability of structural brain change in cognitively healthy adult samples doi.org/10.1162/imag...

This is a must-read. Csaba Szabó, the author of Unreliable, was approached by a paper mill, and he decided to conduct a sting operation. He documented how paper mills operate. forbetterscience.com/2025/05/19/a...

Clarivate to stop counting citations to retracted articles in journals’ impact factors

Thanks to everybody who chimed in! I arrived at the conclusion that (1) there's a lot of interesting stuff about interactions and (2) the figure I was looking for does not exist. So, I made it myself! Here's a simple illustration of how to control for confounding in interactions:>

You want to fit structural equation models in Julia? No problem with the StructuralEquationModels.jl package. Ships with worked examples and tutorials on how to modify the objective function easily (e.g., adding a regularization penalty). Find our preprint here osf.io/preprints/ps...

New updates to Psychometrika! - Theory & Methods now also accepts focus articles with discussion/rejoinder - Book Review is now Review Section, and includes more topics (lit, book, software, media) - ARCS is now “Applications and Case Studies,” and includes software as a category

Remember the "Highlights" that some Elsevier journals require? Dean Karlan and friends developed an amazing way to troll them: haikus!

ik weet eigenlijk niet eens waarom ik de moeite heb gedaan om ze naast elkaar te zetten maar goed het is nu toch al gebeurd

#AcademicSky #SciPub #PeerReview #PhDSky #OpenScience #AcademicResearch #AcademicWriting #ScholarlyPublishing #AcademicPublishing #AcademicChatter #Comics 🧪

​The new {dockitect} R package offers a pipe-friendly API to streamline the creation and management of Dockerfiles, enhancing reproducibility and deployment in #rstats projects. Learn more about its features and benefits here: blog.thecoatlessprofessor.com/programming/...

Preprint from @didacvp.bsky.social - a common brain factor underlying memory decline in older age. Stronger associations in older, but independent of genetic Alzheimer risk. Very interesting work using >10.000 MRI scan. @LCBC_UiO www.biorxiv.org/content/10.1...

Upcoming at #DAGStat2025 in Berlin at 5:20pm today: "Focus! SEM Trees and Forests for Identifying Moderators in Structural Equation Models" My slides are here: github.com/brandmaier/f...

This is what we’ve come to, and so quickly.

In the latest blog of the Meta-Research Center, I wonder if meta-scientists should hold themselves to higher standards. Do we lose credibility if we don't always follow all best practices we advocate for? #metascience #statcheck #psychscisky metaresearch.nl/blog/2025/3/...

If no single piece of the original ship remains in the current ship, is the ship still the Ship of Theseus? And if one percent of all my body's cells get replaced every single day, is it really me who, two months ago, accepted your review request?

New comment by @faridanvari.bsky.social and friends arguing that psychology is fragmented into the study of too many constructs and measures with too few links. www.nature.com/articles/s41...

When you past self answered your question on stack overflow.

Looking for a R/reproducibility workshop in Berlin? Check "Reproducible Research in R: A Workshop on How to Do the Same Thing More Than Once" by Aaron Peikert in May. Register here: www.formr-uni-siegen.de/repro-worksh... #rstats

How can we reduce conceptual clutter in the psychological sciences? @ruimata.bsky.social and I propose a solution based on a fine-tuned 🤖 LLM (bit.ly/mpnet-pers) and test it for 🎭 personality psychology. The paper is finally out in @natrevpsych.bsky.social: go.nature.com/4bEaaja

Please apply and work with Rogier!

To be FAIR: Theory needs an update! FAIR theory can be shared, reused in analysis software, and updated based on new findings. Using existing #openscience infrastructure, it streamlines collaboration, reduces research waste, and accelerates cumulative knowledge development osf.io/preprints/ps...

Revising papers became easy when I discovered James Conigrave's "revise" package, which inserts tagged snippets from a manuscript into a revision letter! No more back-and-forth, no more consistency checking. Now on CRAN, may it save you as much time as it did me! cran.r-project.org/web/packages...

Haha that's a new one

Updated Preprint: Are you looking for automated reproducibility checks in R Markdown? Just rename your code chunks from 'R' to 'reproducibleR' with our pkg #rstats cran.r-project.org/web/packages... More in our preprint (under review): osf.io/preprints/ps... We are looking forward to your feedback!

❗️Our next workshop will be on February 27th, 6 pm CET on Decomposing within and between person effects in longitudinal data with SEM in R by @dustinharaden.bsky.social ! Register or sponsor a student by donating to support Ukraine! Details: bit.ly/3wBeY4S Please share! #AcademicSky #EconSky #RStats