Caspar van Lissa 🟥
@cjvanlissa.bsky.social
Associate professor of social data science at Tilburg University, chair of the Open Science Community Tilburg, board member of Tilburg Young Academy
Are you open science-minded, technically savvy, and interested in mixed methods? Come build the future of mixed methods with Tamarinde Haven and @mariestadel.bsky.social. Our campus is green, our colleagues supportive, and our research excellent!
www.academictransfer.com/en/jobs/3583...
www.academictransfer.com/en/jobs/3583...
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 Dep...
www.academictransfer.com
February 6, 2026 at 11:17 AM
Are you open science-minded, technically savvy, and interested in mixed methods? Come build the future of mixed methods with Tamarinde Haven and @mariestadel.bsky.social. Our campus is green, our colleagues supportive, and our research excellent!
www.academictransfer.com/en/jobs/3583...
www.academictransfer.com/en/jobs/3583...
Reposted by Caspar van Lissa 🟥
Zotero 8 is out (www.zotero.org/blog/zotero-8/). If you're not already using, highly recommended!
Zotero Blog » Blog Archive » Zotero 8
Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
www.zotero.org
January 29, 2026 at 11:37 AM
Zotero 8 is out (www.zotero.org/blog/zotero-8/). If you're not already using, highly recommended!
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 doi.org/10.1177/1745...
To Be FAIR: Theory Specification Needs an Update - Caspar J. Van Lissa, Aaron Peikert, Maximilian S. Ernst, Noah N. N. van Dongen, Felix D. Schönbrodt, Andreas M. Brandmaier, 2026
Open science innovations have focused on rigorous theory testing, yet methods for specifying, sharing, and iteratively improving theories remain underdeveloped....
doi.org
January 23, 2026 at 8:50 AM
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 doi.org/10.1177/1745...
Open source software is powerful, but only if people know how to use it. After publishing 12 R packages, I'm shifting toward open educational materials with monthly deep-dive videos on data science in R. First up: mixed data (continuous/categorical) Latent Class Analysis with tidySEM! What's next?
Latent Class Analysis with Continuous and Ordinal Indicators in R
YouTube video by Caspar van Lissa
www.youtube.com
January 19, 2026 at 9:33 AM
Open source software is powerful, but only if people know how to use it. After publishing 12 R packages, I'm shifting toward open educational materials with monthly deep-dive videos on data science in R. First up: mixed data (continuous/categorical) Latent Class Analysis with tidySEM! What's next?
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
January 5, 2026 at 11:59 AM
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
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!
45 projects awarded to strengthen Dutch open science infrastructure! From connecting colonial archives to opening telescope data, these initiatives make research infrastructure more accessible, transparent and inclusive.
Read more👉 www.openscience.nl/en/news/45-p...
Read more👉 www.openscience.nl/en/news/45-p...
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.
www.openscience.nl
December 17, 2025 at 10:21 AM
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!
🟥 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: www.fnv.nl/ho
Meer informatie: www.fnv.nl/ho
December 9, 2025 at 12:00 PM
🟥 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: www.fnv.nl/ho
Meer informatie: www.fnv.nl/ho
The Paul Meehl Graduate school provides FREE education for PhD students in Europe, especially in metascience and methodology paulmeehlschool.github.io Today is the kick-off of their annual conference!
October 17, 2025 at 7:11 AM
The Paul Meehl Graduate school provides FREE education for PhD students in Europe, especially in metascience and methodology paulmeehlschool.github.io Today is the kick-off of their annual conference!
"Preprints are read, shared, and cited — yet dismissed as incomplete until blessed by a publisher. [...] the true measure of scholarship lies in open exchange, not in the industry’s gatekeeping labels of what counts as published.
Against publishing - Univers magazine share.google/LSk8PkEKeRSb...
Against publishing - Univers magazine share.google/LSk8PkEKeRSb...
Against publishing
Preprints are read, shared, and cited — yet still dismissed as incomplete until blessed by a publisher. Matti Vuorre argues that the true measure of scholarsh
share.google
October 15, 2025 at 12:50 PM
"Preprints are read, shared, and cited — yet dismissed as incomplete until blessed by a publisher. [...] the true measure of scholarship lies in open exchange, not in the industry’s gatekeeping labels of what counts as published.
Against publishing - Univers magazine share.google/LSk8PkEKeRSb...
Against publishing - Univers magazine share.google/LSk8PkEKeRSb...
Is anyone willing to share their slides on philosophy of science for undergraduate (statistics) students, especially as it pertains to the hypothetico-deductive framework? Here are my current notes on the topic: lnkd.in/eB-TZGDK
LinkedIn
This link will take you to a page that’s not on LinkedIn
lnkd.in
September 22, 2025 at 5:48 PM
Is anyone willing to share their slides on philosophy of science for undergraduate (statistics) students, especially as it pertains to the hypothetico-deductive framework? Here are my current notes on the topic: lnkd.in/eB-TZGDK
Any experiences with "Journal of Computational Social Science"? I reviewed a manuscript that should have been desk-rejected (grammatically incorrect, not embedded in relevant literature, ad-hoc and nonsensical analysis decisions); the decision was "minor revision" based on ONLY my review. How!?
September 22, 2025 at 5:21 AM
Any experiences with "Journal of Computational Social Science"? I reviewed a manuscript that should have been desk-rejected (grammatically incorrect, not embedded in relevant literature, ad-hoc and nonsensical analysis decisions); the decision was "minor revision" based on ONLY my review. How!?
Reposted by Caspar van Lissa 🟥
Finally! 🤩 Our position piece: Against the Uncritical Adoption of 'AI' Technologies in Academia:
doi.org/10.5281/zeno...
We unpick the tech industry’s marketing, hype, & harm; and we argue for safeguarding higher education, critical
thinking, expertise, academic freedom, & scientific integrity.
1/n
doi.org/10.5281/zeno...
We unpick the tech industry’s marketing, hype, & harm; and we argue for safeguarding higher education, critical
thinking, expertise, academic freedom, & scientific integrity.
1/n
September 6, 2025 at 8:13 AM
Finally! 🤩 Our position piece: Against the Uncritical Adoption of 'AI' Technologies in Academia:
doi.org/10.5281/zeno...
We unpick the tech industry’s marketing, hype, & harm; and we argue for safeguarding higher education, critical
thinking, expertise, academic freedom, & scientific integrity.
1/n
doi.org/10.5281/zeno...
We unpick the tech industry’s marketing, hype, & harm; and we argue for safeguarding higher education, critical
thinking, expertise, academic freedom, & scientific integrity.
1/n
Reposted by Caspar van Lissa 🟥
I was reminded today of the heroic work done by @eikofried.bsky.social and
@robinnkok.bsky.social to see what information Elsevier collects on academics and was re-horrified. 🧵 (1/5)
eiko-fried.com/welcome-to-h...
#academicsky
@robinnkok.bsky.social to see what information Elsevier collects on academics and was re-horrified. 🧵 (1/5)
eiko-fried.com/welcome-to-h...
#academicsky
Welcome to Hotel Elsevier: you can check-out any time you like … not » Eiko Fried
A journey by Robin Kok and Eiko Fried trying to understand what private data Elsevier collects; what private data Elsevier sells; and what to do about it.
eiko-fried.com
July 23, 2025 at 2:57 PM
I was reminded today of the heroic work done by @eikofried.bsky.social and
@robinnkok.bsky.social to see what information Elsevier collects on academics and was re-horrified. 🧵 (1/5)
eiko-fried.com/welcome-to-h...
#academicsky
@robinnkok.bsky.social to see what information Elsevier collects on academics and was re-horrified. 🧵 (1/5)
eiko-fried.com/welcome-to-h...
#academicsky
Reposted by Caspar van Lissa 🟥
Day 2 Keynotes kicked off with Laura Nelson's inspiring presentation, “Why Qualitative Research Needs Computational Social Science”. What is the state of this maturing field called qualitative computational methods? What are the ongoing debates and futures? #ic2s2
July 23, 2025 at 7:40 AM
Day 2 Keynotes kicked off with Laura Nelson's inspiring presentation, “Why Qualitative Research Needs Computational Social Science”. What is the state of this maturing field called qualitative computational methods? What are the ongoing debates and futures? #ic2s2
Loving @ic2s2.bsky.social , 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?
July 23, 2025 at 3:54 PM
Loving @ic2s2.bsky.social , 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?
At my preconference workshop @ic2s2.bsky.social participants will conduct a *fully reproducible* and *FAIR theory based* simulation study.
The full interactive tutorial is in the theorytools R-package docs: cjvanlissa.github.io/theorytools/...
And slides: cjvanlissa.github.io/worcshop/ic2...
The full interactive tutorial is in the theorytools R-package docs: cjvanlissa.github.io/theorytools/...
And slides: cjvanlissa.github.io/worcshop/ic2...
LinkedIn
This link will take you to a page that’s not on LinkedIn
lnkd.in
July 21, 2025 at 6:00 AM
At my preconference workshop @ic2s2.bsky.social participants will conduct a *fully reproducible* and *FAIR theory based* simulation study.
The full interactive tutorial is in the theorytools R-package docs: cjvanlissa.github.io/theorytools/...
And slides: cjvanlissa.github.io/worcshop/ic2...
The full interactive tutorial is in the theorytools R-package docs: cjvanlissa.github.io/theorytools/...
And slides: cjvanlissa.github.io/worcshop/ic2...
To be FAIR: Theory specification needs an update! Theories that others can reuse and update help navigate the "theory crisis". The theorytools R-package now has tutorials showing how to make theories FAIR and use them to select covariates, simulate data, etc
osf.io/preprints/ps...
osf.io/preprints/ps...
OSF
osf.io
June 24, 2025 at 8:51 AM
To be FAIR: Theory specification needs an update! Theories that others can reuse and update help navigate the "theory crisis". The theorytools R-package now has tutorials showing how to make theories FAIR and use them to select covariates, simulate data, etc
osf.io/preprints/ps...
osf.io/preprints/ps...
Reposted by Caspar van Lissa 🟥
🚨 Program Highlight!
We're thrilled to welcome @cjvanlissa.bsky.social as our keynote speaker on June 5th! He’ll present his work on FAIR theory—a framework to make theories Findable, Accessible, Interoperable & Reusable—and share his path as a meta-scientist. #openscience #FAIRtheory #metascience
We're thrilled to welcome @cjvanlissa.bsky.social as our keynote speaker on June 5th! He’ll present his work on FAIR theory—a framework to make theories Findable, Accessible, Interoperable & Reusable—and share his path as a meta-scientist. #openscience #FAIRtheory #metascience
May 21, 2025 at 2:44 PM
🚨 Program Highlight!
We're thrilled to welcome @cjvanlissa.bsky.social as our keynote speaker on June 5th! He’ll present his work on FAIR theory—a framework to make theories Findable, Accessible, Interoperable & Reusable—and share his path as a meta-scientist. #openscience #FAIRtheory #metascience
We're thrilled to welcome @cjvanlissa.bsky.social as our keynote speaker on June 5th! He’ll present his work on FAIR theory—a framework to make theories Findable, Accessible, Interoperable & Reusable—and share his path as a meta-scientist. #openscience #FAIRtheory #metascience
I'm hiring a PHD candidate in Machine Learning-Informed Formal Theory Construction. Please encourage talented students to apply, or reach out if you want to collaborate. Looking for machine learning, theory development, and programming skills, and interdisciplinary interests! See tiu.nu/22752
Job opening: PhD candidate in Machine Learning-Informed Formal Theory Construction (22752)
tiu.nu
April 28, 2025 at 8:54 AM
I'm hiring a PHD candidate in Machine Learning-Informed Formal Theory Construction. Please encourage talented students to apply, or reach out if you want to collaborate. Looking for machine learning, theory development, and programming skills, and interdisciplinary interests! See tiu.nu/22752
For @tilburg-university.bsky.social 's #sciencequest podcast, I discussed the question: Do we still need scientific models? Can we not just use AI to answer all of our questions? The interview is in Dutch, accompanying text in English: www.tilburguniversity.edu/magazine/ove...
The AI bubble: Why scientific models remain essential | Tilburg University
From ChatGPT to self-driving cars, AI promises a revolutionary future. But is this technology truly as groundbreaking as often claimed? A conversation with Caspar van Lissa, Associate Professor of Soc...
www.tilburguniversity.edu
April 11, 2025 at 10:12 AM
For @tilburg-university.bsky.social 's #sciencequest podcast, I discussed the question: Do we still need scientific models? Can we not just use AI to answer all of our questions? The interview is in Dutch, accompanying text in English: www.tilburguniversity.edu/magazine/ove...
Reposted by Caspar van Lissa 🟥
Extremely disappointing & cowardly. The American Psychological Association is rescinding diversity requirements. Not due to any actual mandate from the federal government, but only because it may *someday* face pressure from the government www.nytimes.com/2025/03/27/h...
Under Pressure, Psychology Accreditation Board Suspends Diversity Standards
As the Trump administration threatens to strip accrediting bodies of their power, many are scrambling to purge diversity requirements.
www.nytimes.com
March 28, 2025 at 1:16 AM
Extremely disappointing & cowardly. The American Psychological Association is rescinding diversity requirements. Not due to any actual mandate from the federal government, but only because it may *someday* face pressure from the government www.nytimes.com/2025/03/27/h...
Reposted by Caspar van Lissa 🟥
Went bouldering with Noah van Dongen and @cjvanlissa.bsky.social. Noah got a Veni grant this year, Caspar a Vidi, and I received a Vici, so we had to make this picture 😊 We will also work together in our projects on improving theorising in psychology!
March 27, 2025 at 3:14 PM
Went bouldering with Noah van Dongen and @cjvanlissa.bsky.social. Noah got a Veni grant this year, Caspar a Vidi, and I received a Vici, so we had to make this picture 😊 We will also work together in our projects on improving theorising in psychology!
Reposted by Caspar van Lissa 🟥
Alle Europese landen zijn serieus werk aan het maken van het aantrekken van Amerikaanse wetenschappers. Behalve de Nederlandse coalitie van "boekhouders en ruziemakers", zegt
Rob Jetten van D66. Het kabinet is dit ook niet van plan, zegt Dick Schoof.
Rob Jetten van D66. Het kabinet is dit ook niet van plan, zegt Dick Schoof.
Kabinet wil geen actieplan om Amerikaanse wetenschappers aan te trekken - ScienceGuide
Maak speciaal actieplan om Amerikaanse wetenschappers en experts naar Nederland te halen, zeggen D66 en Volt. Premier Dick Schoof voelt echter weinig voor een specifieke focus op Amerikaanse kennismig...
www.scienceguide.nl
March 19, 2025 at 10:27 AM
Alle Europese landen zijn serieus werk aan het maken van het aantrekken van Amerikaanse wetenschappers. Behalve de Nederlandse coalitie van "boekhouders en ruziemakers", zegt
Rob Jetten van D66. Het kabinet is dit ook niet van plan, zegt Dick Schoof.
Rob Jetten van D66. Het kabinet is dit ook niet van plan, zegt Dick Schoof.
Bridging the gap between #R package documentation and #openscience Open Educational Materials, I'm embedding formative quizzes in the package vignettes (based on @debruine.bsky.social 's webexercises)! Check the development version of github.com/cjvanlissa/t... to see how it's done.
March 18, 2025 at 6:52 AM
Bridging the gap between #R package documentation and #openscience Open Educational Materials, I'm embedding formative quizzes in the package vignettes (based on @debruine.bsky.social 's webexercises)! Check the development version of github.com/cjvanlissa/t... to see how it's done.
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...
OSF
osf.io
March 10, 2025 at 8:05 AM
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...