Mastodawn

The "Theory Paper Format" is a template for writing psychological theory papers, developed by the Taskforce Theoretical Psychology (Lorentz Workshop, 2025). Use it to structure your theoretical paper, or (for editors) consider creating journal space for theory papers https://doi.org/10.17605/OSF.IO/D3JMW

OSF

Caspar van Lissa Feb 23

Does your R-script work on your computer? Want to make it fully reproducible on ANY system, now and in the future? In this video, I demonstrate how to turn R scripts into reproducible, version-controlled projects with worcs, renv, targets, and testthat to verify reproducibility. https://youtu.be/3mgRFMr5APU

Make Existing R Code Reproducible with 'worcs' and 'targets'

YouTube

Caspar van Lissa Feb 20

Call for Submissions for the Theory Methods Conference 2026, September 30-October 2! https://theorymethodssociety.org/conference.html

We invite you to:
1) Submit your proposal: https://edu.nl/mj9x6
2) Invite your colleagues/lab/(PhD) students, and encourage them to submit
3) Share this post

Conference –

Caspar van Lissa Feb 6

Are you open science-minded, technically savvy, and interested in mixed methods? Come build the future of mixed methods with Tamarinde Haven and Marie Stadel. Our campus is green, our colleagues supportive, and our research excellent!
https://www.academictransfer.com/en/jobs/358351/phd-candidate-on-the-future-of-mixed-methods-research-junior-lecturer-in-methodology-and-statistics/

PhD Candidate on The Future of Mixed Methods Research /Junior Lecturer in Methodology and Statistics

Tilburg University | Tilburg School of Social and Behavioral Sciences is looking for a PhD Candidate on The Future of Mixed Methods Research /Junior Lecturer in Methodology and Statistics, for the Department of Methodology and Statistics, location: Tilburg, c…

AcademicTransfer

Caspar van Lissa Jan 23

Everyone’s talking about the "theory crisis" - but do we fix it with formal- or agent-based models, DAGs, propositions? Regardless: we need a shared medium to exchange and improve ideas. That medium is FAIR theory: Findable, Accessible, Interoperable, Reusable https://doi.org/10.1177/17456916251401850

Caspar van Lissa Jan 19

Open source research software is powerful, but only if people know how to use it. That's why, after publishing 12 R packages, I'm shifting my attention toward open educational materials. Every month, I will record a deep-dive video on advanced stats and data science in R. First up: mixed (continuous/categorical) data Latent Class Analysis with tidySEM. What should I cover next? https://www.youtube.com/watch?v=e6lUG5f7TWs

Latent Class Analysis with Continuous and Ordinal Indicators in R

YouTube

Caspar van Lissa Jan 5

Over christmas, I added tidySEM much-requested support for mixed-data latent class analysis (continuous/categorical)! This was technically possible, but the new implementation is easier, faster, with better convergence! Try it by running remotes::install_github("cjvanlissa/tidySEM"); ?mx_mixed_lca

Caspar van Lissa Dec 17

Fantastic projects awarded, including two I'm part of: Hannes Datta's "ReproHub", which integrates reproducibility/checks into research infrastructure, and Terrence Jorgensen's "Infra-Structural Equation Modelling", which develops lavaan and related open educational material! Congratulations to all! https://www.openscience.nl/en/news/45-projects-strengthen-dutch-open-science-infrastructure

45 projects strengthen Dutch open science infrastructure | Open Science NL

In its largest funding round to date, Open Science NL awards 45 projects that strengthen infrastructure for open science in the Netherlands. The projects make scholarly data, software and publications more accessible and help make science more accessible, transparent and inclusive.

Open Science NL

Caspar van Lissa Dec 9

🟥 Ik staak tegen bezuinigingen op het hoger onderwijs. Investeren in de kenniseconomie is noodzakelijk om wereldwijde uitdagingen van klimaat, ongelijkheid, gezondheid, veiligheid, ea het hoofd te bieden. We roepen de overheid op: kies een andere koers.

Meer informatie: https://www.fnv.nl/ho

Caspar van Lissa Jul 23, 2025

Loving @IC2S2 , but I wonder if we're asking the right questions. Is "How can I outsource this task to a proprietary, black box, resource-intensive, often un-validated LLM?" when fit-for-purpose classifiers abound a computational a computational research question? Or even scientific?

machine learning
research synthesis
open science
structural equation modeling