1/ We have a PhD position open on 'Mental Disorders as Harmful Stable States'. If you know students interested in the intersection of mental health & statistical modeling (EMA & time series), please encourage them to apply. www.academictransfer.com/nl/jobs/3621...

PhD Position on "Mental disorders as harmful stable states"

PhD Position on “Mental disorders as harmful stable states” The departments Clinical Psychology and Methodology & Statistics, at the Institute of Psychology, Faculty of Social Sciences, Leiden Univers...

academictransfer.com

🔎 How to use LLMs to analyze news coverage? @fdabl.bsky.social, postdoc at @seven-uva.bsky.social, presented to us research conducted with @jmbh.bsky.social and Simon Wimmer as part of the Climate Media Lab on how media cover climate change, which also employed a new LLM-based methodology.

Using (multilevel) VAR models? Ever checked how well they actually fit your data? @jmbh.bsky.social & I created VARcheck, an R package for visual model checking for VAR models. Blogpost with workflow: bsiepe.github.io/blog/2026-05... 📝Paper: doi.org/10.31234/osf... 💻Docs: bsiepe.github.io/VARcheck/

🔥 Material life satisfaction increases willingness to engage in costly climate action @maiensachis.bsky.social, @jmbh.bsky.social, & I use causally informed regression models to estimate the effect of life satisfaction on climate action in a large Dutch sample (N = 22,749): osf.io/preprints/ps...

🚨 Climate change coverage in The Guardian In a new preprint, Simon Wimmer, @jmbh.bsky.social, and I analyzed over 18,000 articles about climate change in @theguardian.com (2010-2025) using large language models 🧵 🔗 Link: osf.io/preprints/so...

🚨 Techno-optimism reduces willingness to address climate change 🚨 In a new preprint, @maiensachis.bsky.social, @fdabl.bsky.social, and I examined the causal effect of techno-optimist beliefs on the willingness to contribute to addressing climate change. 🔗 Read the paper: lnkd.in/eE847_jK

📢 Call for Papers: We’re excited to announce an upcoming Psychometrika Special Issue on Data Intensive Methods in Psychometrics (think of using many datasets for methodological development), guest edited by @klint.bsky.social, @kyliegorney.bsky.social, @jmbh.bsky.social, Ben Domingue, and me.

Klint Kanopka@klint.bsky.social · 7mo ago

Excited to share a new call for papers for a special issue in Psychometrika focused on Data Intensive Methods in Psychometrics that I'll be guest editing with @kyliegorney.bsky.social, @jmbh.bsky.social, @leonievogelsmeier.bsky.social, and Ben Domingue: www.psychometricsociety.org/post/call-sp...

🌟📝 Just out in World Psychiatry: Our new piece demonstrates the added value of dynamic symptom networks for predicting treatment outcomes beyond baseline severity & common covariates, with an added explained variance of 9-22% at post-treatment & follow-up. onlinelibrary.wiley.com/doi/10.1002/...

After 5 years of data collection, our WARN-D machine learning competition to forecast depression onset is now LIVE! We hope many of you will participate—we have incredibly rich data. If you share a single thing of my lab this year, please make it this competition. eiko-fried.com/warn-d-machi...

WARN-D machine learning competition is live » Eiko Fried

If you share one single thing of our team in 2026—on social media or per email with your colleagues—please let it be this machine learning competition. It was half a decade of work to get here, especi...

eiko-fried.com

Big new blogpost! My guide to data visualization, which includes a very long table of contents, tons of charts, and more. --> Why data visualization matters and how to make charts more effective, clear, transparent, and sometimes, beautiful. www.scientificdiscovery.dev/p/salonis-gu...

🚨Model Checking for Vector Autoregressive Models 🚨 In a new preprint, @joranjongerling.bsky.social, @bsiepe.bsky.social, @sachaepskamp.bsky.social, Lourens Waldorp and I provide a tutorial on model checking for Vector Autoregressive (VAR) models: osf.io/preprints/ps...

🚨 Mapping climate change coverage In a new preprint, Simon Wimmer, @jmbh.bsky.social, and I analyzed over 50,000 articles about climate change from major German newspapers across the political spectrum (2010-2024) using large language models 🧵 🔗 Link: osf.io/preprints/so...

We are beyond excited to announce that the applications are now open for the third Amsterdam Complexity School on Climate Change! Come visit a beautiful city, hear from world-renowned experts, and work with passionate individuals on challenges related to climate change. More info: acscc.nl

🚨Techno-optimistic scientists take fewer climate actions In a new preprint, @colognaviktoria.bsky.social, @maiensachis.bsky.social, @jmbh.bsky.social & I examine techno-optimism among 9,199 scientists and how it relates to their civic engagement and lifestyle choices🧵 🔗 Link: tinyurl.com/hh94huzv

We built the openESM database: ▶️60 openly available experience sampling datasets (16K+ participants, 740K+ obs.) in one place ▶️Harmonized (meta-)data, fully open-source software ▶️Filter & search all data, simply download via R/Python Find out more: 🌐 openesmdata.org 📝 doi.org/10.31234/osf...

Happy to share that our large-scale network analysis is now out in @nathumbehav.nature.com We show that networks are often supported by too little evidence from the data for results to be reported with confidence, not meaning that results are flawed but rather suggests caution in interpretation.

Nature Human Behaviour@nathumbehav.nature.com · 10mo ago

Psychometric network models have become increasingly popular in psychology and the social sciences. Huth et al. show that many reported network findings are based on weak or inconclusive evidence inviting caution when interpreting results.

Two new preprints on multilevel HMMs! Time series data is now pervasive in psychology and new methods are needed to model the dynamics in such data. Hidden Markov Models (HHMs) are powerful models for dynamics in which a system is switching between a number of discrete states.

Experts with theoretical traditions, researchers experienced in approaches to theory construction, educators and policymakers work on the first steps toward creating a mature subfield of theoretical psychology. bit.ly/4nLOWoE @annemscheel.bsky.social @bringmannlaura.bsky.social @jmbh.bsky.social

Are climate activists portrayed as polarising & violent in the news media? Are risks & solutions to climate change mentioned? We used ChatGPT to answer these questions based on > 4,200 articles from seven major German newspapers: link.springer.com/article/10.1... w @jmbh.bsky.social & Simon Wimmer

“States must act now to end the violence or bear witness to the annihilation of the Palestinian population in Gaza – an outcome with irreversible consequences for our shared humanity”

End unfolding genocide or watch it end life in Gaza: UN experts say States face defining choice

GENEVA – Escalating atrocities in Gaza present an urgent moral crossroads and States must act now to end the violence or bear witness to the annihilation of the Palestinian population in Gaza – an out...

ohchr.org

What a show on the last day of ACSCC 2025 where our brilliant participants presented the culmination of their week-long collaborations. Buckle up for today’s highlights👇

Time flies and we are already halfway through ACSCC! Today was kicked-off by @doynefarmer.bsky.social, who gave us a deep dive into forecasting technological progress. Doyne also shared his vision of complexity economics for a better world, and showcased his impressive modelling work at Macrocosm.

The second day of ACSCC was again full of inspiring lectures and discussions! Day two was kicked-off by the keynote of Tim Lenton, who gave an introduction to tipping points and an update on the latest research, followed by a discussion about effective leverage points using positive tipping points.

The second edition of ACSCC is officially underway! We had a fantastic first day, welcoming over 40 participants from a wide range of disciplines — including economists, lawyers, social scientists, metallurgists, and more. Once again, we are blessed with wonderful sunny weather here in Amsterdam! ☀️

We are very excited about the line-up of speakers for ACSCC, which kicks off next week! The following talks can also be followed online: Tim Lenton: tinyurl.com/5d9ubts9 Joyeeta Gupta: tinyurl.com/kbk92rap Doyne Farmer: tinyurl.com/vdrhjvwe Vítor Vasconcelos: uva-live.zoom.us/j/89976716302

How can Multilevel Hidden Markov Models help uncover personalized dynamics? Find out in the post-conference session on May 29 with Emmeke Aarts (Utrecht University), Jonas Haslbeck (University of Amsterdam), and Pepijn Vink (Utrecht University)! @jmbh.bsky.social

1/3 Tutorial on exploring ecological momentary assessment data is online at AMPPS, with: - Accessible ways to visualize data for better understanding - Models to get some first insights - Further reading boxes for more advanced topics - Reproducible pipeline you can run over your own data

New preprint by Anja Ernst and me on Modeling Qualitative Between-Person Heterogeneity in Time-Series using Latent Class Vector Autoregressive Models (osf.io/preprints/ps...)

🚨 New preprint! 🚨 We analysed over one million actions reported in the AWorld app, the UN's official platform for individual action on climate change: osf.io/preprints/ps... This was an exciting collaboration with @kristiansn89.bsky.social, Jan Bauer, Laura Basconi, & @cameronbrick.bsky.social 🧵👇