Eiko Fried
@eikofried.bsky.social
Professor of Mental Health & Data Science at Leiden University. Studying mental health problems as systems (http://eiko-fried.com). Building an early warning system for depression (http://WARN-D.com).
Hi folks! For a methods validation paper, we're looking for a large, cross-sectional, psychometric dataset that will show considerable heterogeneity in item responses, preferably, based on different classes/clusters/groups of people. Open access optimal, but if you have one you'd share w me ...
February 2, 2026 at 6:28 PM
Hi folks! For a methods validation paper, we're looking for a large, cross-sectional, psychometric dataset that will show considerable heterogeneity in item responses, preferably, based on different classes/clusters/groups of people. Open access optimal, but if you have one you'd share w me ...
Breaking news: New Dutch cabinet reversing €1.5 billion in cuts to education and science
www.scienceguide.nl/2026/01/kabi...
www.scienceguide.nl/2026/01/kabi...
Kabinet-Jetten gaat met 1,5 miljard bezuinigingen op onderwijs en wetenschap terugdraaien - ScienceGuide
Voor investeringen in het onderwijs is door de nieuwe coalitie een envelop van structureel 1,5 miljard euro beschikbaar gesteld. Dit geld wordt onder andere besteed aan terugdraaien van de bezuiniging...
www.scienceguide.nl
January 30, 2026 at 12:59 PM
Breaking news: New Dutch cabinet reversing €1.5 billion in cuts to education and science
www.scienceguide.nl/2026/01/kabi...
www.scienceguide.nl/2026/01/kabi...
One month left for our ML competition to predict depression onset, in a massive dataset we collected over 5 years, including EMA and passive sensing data.
We have nearly 200 signups already, very excited to share our data and see who can fit the best models!
www.codabench.org/competitions...
We have nearly 200 signups already, very excited to share our data and see who can fit the best models!
www.codabench.org/competitions...
January 30, 2026 at 11:08 AM
One month left for our ML competition to predict depression onset, in a massive dataset we collected over 5 years, including EMA and passive sensing data.
We have nearly 200 signups already, very excited to share our data and see who can fit the best models!
www.codabench.org/competitions...
We have nearly 200 signups already, very excited to share our data and see who can fit the best models!
www.codabench.org/competitions...
Editorial by @astridchevance.bsky.social on censorship in academia.
Worth your time.
#AcademicSky #PsychSciSky 🧪
www.cambridge.org/core/journal...
Worth your time.
#AcademicSky #PsychSciSky 🧪
www.cambridge.org/core/journal...
Contemporary censors at work: targeting medical science to shape social reality | The British Journal of Psychiatry | Cambridge Core
Contemporary censors at work: targeting medical science to shape social reality - Volume 228 Issue 1
www.cambridge.org
January 30, 2026 at 9:30 AM
Editorial by @astridchevance.bsky.social on censorship in academia.
Worth your time.
#AcademicSky #PsychSciSky 🧪
www.cambridge.org/core/journal...
Worth your time.
#AcademicSky #PsychSciSky 🧪
www.cambridge.org/core/journal...
Reposted by Eiko Fried
New blog post introducing Causion - a web app for causal inference teaching and learning: pedermisager.org/blog/causion....
Introducing Causion: A web app for playing with DAGs | Peder M. Isager
Personal website of Dr. Peder M. Isager
pedermisager.org
January 28, 2026 at 9:23 AM
New blog post introducing Causion - a web app for causal inference teaching and learning: pedermisager.org/blog/causion....
Reposted by Eiko Fried
Comparing registrations to published papers is essential to research integrity - and almost no one does it routinely because it's slow, messy, and time-demanding.
RegCheck was built to help make this process easier.
Today, we launch RegCheck V2.
🧵
regcheck.app
RegCheck was built to help make this process easier.
Today, we launch RegCheck V2.
🧵
regcheck.app
RegCheck
RegCheck is an AI tool to compare preregistrations with papers instantly.
regcheck.app
January 22, 2026 at 11:05 AM
Comparing registrations to published papers is essential to research integrity - and almost no one does it routinely because it's slow, messy, and time-demanding.
RegCheck was built to help make this process easier.
Today, we launch RegCheck V2.
🧵
regcheck.app
RegCheck was built to help make this process easier.
Today, we launch RegCheck V2.
🧵
regcheck.app
Our newly published protocol for the development of a core outcome set for adults with depression.
With @pimcuijpers.bsky.social @toshi-frkw.bsky.social @astridchevance.bsky.social and many others.
www.jclinepi.com/article/S089...
With @pimcuijpers.bsky.social @toshi-frkw.bsky.social @astridchevance.bsky.social and many others.
www.jclinepi.com/article/S089...
A protocol for the development of a core outcome set for adults with depression
Heterogeneous outcome measurement limits the comparison and combination of results
from randomized controlled trials and observational studies aimed at evaluating therapeutic
interventions for depress...
www.jclinepi.com
January 22, 2026 at 8:05 AM
Our newly published protocol for the development of a core outcome set for adults with depression.
With @pimcuijpers.bsky.social @toshi-frkw.bsky.social @astridchevance.bsky.social and many others.
www.jclinepi.com/article/S089...
With @pimcuijpers.bsky.social @toshi-frkw.bsky.social @astridchevance.bsky.social and many others.
www.jclinepi.com/article/S089...
Reposted by Eiko Fried
I am very proud to have published my second file-drawer report at my favourite journal Meta-Psychology together with Lisa Incerti, @tobiasrebholz.bsky.social, Christian Seida, and Frank Papenmeier. It includes four failed attempts to confirm a new hypothesis on #anchoringeffects.
January 16, 2026 at 10:57 AM
I am very proud to have published my second file-drawer report at my favourite journal Meta-Psychology together with Lisa Incerti, @tobiasrebholz.bsky.social, Christian Seida, and Frank Papenmeier. It includes four failed attempts to confirm a new hypothesis on #anchoringeffects.
“Our findings suggest industry influence in social media research
is extensive, impactful, and often opaque.” @jbakcoleman.bsky.social @carlbergstrom.com et al.
arxiv.org/abs/2601.115...
is extensive, impactful, and often opaque.” @jbakcoleman.bsky.social @carlbergstrom.com et al.
arxiv.org/abs/2601.115...
Industry Influence in High-Profile Social Media Research
To what extent is social media research independent from industry influence? Leveraging openly available data, we show that half of the research published in top journals has disclosable ties to indus...
arxiv.org
January 21, 2026 at 12:45 PM
“Our findings suggest industry influence in social media research
is extensive, impactful, and often opaque.” @jbakcoleman.bsky.social @carlbergstrom.com et al.
arxiv.org/abs/2601.115...
is extensive, impactful, and often opaque.” @jbakcoleman.bsky.social @carlbergstrom.com et al.
arxiv.org/abs/2601.115...
We had a really lovely meetup yesterday to celebrate the new shared position between the (1) Methodology & Statistics and (2) Clinical Psychology departments—thanks to everybody who joined!
And because Leiden is notooooriously slow with administration, I decided to fix my own door sign :)
And because Leiden is notooooriously slow with administration, I decided to fix my own door sign :)
January 20, 2026 at 1:21 PM
We had a really lovely meetup yesterday to celebrate the new shared position between the (1) Methodology & Statistics and (2) Clinical Psychology departments—thanks to everybody who joined!
And because Leiden is notooooriously slow with administration, I decided to fix my own door sign :)
And because Leiden is notooooriously slow with administration, I decided to fix my own door sign :)
We have reached a situation where (1) the time/resources spent by people applying for grant X often outweighs (2) the time/resources awarded.
For these grants, society loses net time/resources.
www.nature.com/articles/d41...
For these grants, society loses net time/resources.
www.nature.com/articles/d41...
Client Challenge
www.nature.com
January 13, 2026 at 9:44 AM
We have reached a situation where (1) the time/resources spent by people applying for grant X often outweighs (2) the time/resources awarded.
For these grants, society loses net time/resources.
www.nature.com/articles/d41...
For these grants, society loses net time/resources.
www.nature.com/articles/d41...
Abstract submission to SAA Vienna has been extended by a bit until January 30. I hope to see many of you there — I really enjoyed the SAA conferences (Amsterdam, Ann Arbor, Leuven) in the last 3 years.
univie.eventsair.com/saa2026/
univie.eventsair.com/saa2026/
January 12, 2026 at 4:24 PM
Abstract submission to SAA Vienna has been extended by a bit until January 30. I hope to see many of you there — I really enjoyed the SAA conferences (Amsterdam, Ann Arbor, Leuven) in the last 3 years.
univie.eventsair.com/saa2026/
univie.eventsair.com/saa2026/
Our machine learning competition on forecasting depression is online! We'd love for as many people as possible to participate. Please share in your respective networks — thank you :).
www.staff.universiteitleiden.nl/announcement...
www.staff.universiteitleiden.nl/announcement...
Machine-learning competition on forecasting depression in young adults - Leiden University
After nearly 5 years of work, the research team led by Eiko Fried has finished data collection in the ERC-funded WARN-D project on building a personalised early warning system for depression. But just...
www.staff.universiteitleiden.nl
January 12, 2026 at 12:52 PM
Our machine learning competition on forecasting depression is online! We'd love for as many people as possible to participate. Please share in your respective networks — thank you :).
www.staff.universiteitleiden.nl/announcement...
www.staff.universiteitleiden.nl/announcement...
The actor who played Pippin is 57 years old
January 8, 2026 at 5:52 PM
The actor who played Pippin is 57 years old
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...
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
January 7, 2026 at 7:39 PM
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...
If you share a single thing of my lab this year, please make it this competition.
eiko-fried.com/warn-d-machi...
They should do the same for all psychology journals that contain causal claims.
"This material is only for use by causal inference professionals."
"This material is only for use by causal inference professionals."
Any idea what's going on with the message at the top for the new Mental Health Science journal? Never seen anything like that.
January 6, 2026 at 4:52 PM
They should do the same for all psychology journals that contain causal claims.
"This material is only for use by causal inference professionals."
"This material is only for use by causal inference professionals."
We're going live with our WARN-D depression onset machine learning competition tomorrow.
Would anyone be willing to read our final competition draft notes and provide feedback if this is fully understandable? It's a short word file.
Would anyone be willing to read our final competition draft notes and provide feedback if this is fully understandable? It's a short word file.
January 6, 2026 at 11:25 AM
We're going live with our WARN-D depression onset machine learning competition tomorrow.
Would anyone be willing to read our final competition draft notes and provide feedback if this is fully understandable? It's a short word file.
Would anyone be willing to read our final competition draft notes and provide feedback if this is fully understandable? It's a short word file.
Any idea what's going on with the message at the top for the new Mental Health Science journal? Never seen anything like that.
January 6, 2026 at 11:20 AM
Any idea what's going on with the message at the top for the new Mental Health Science journal? Never seen anything like that.
We wrote a short piece on conducting participatory workshops to change research culture, given our experiences in teaching workshops on climate activism & open scholarship.
With @anne-urai.bsky.social @clarekelly.bsky.social @annaveer.bsky.social
📝 rdcu.be/eXja4
🧪 #AcademicSky
With @anne-urai.bsky.social @clarekelly.bsky.social @annaveer.bsky.social
📝 rdcu.be/eXja4
🧪 #AcademicSky
How to change research culture with participatory workshops
Nature Human Behaviour - Changing research culture begins with the kind of engaged, collaborative, critical reflection that can spark collective action. This Comment outlines how to design...
rdcu.be
January 6, 2026 at 11:08 AM
We wrote a short piece on conducting participatory workshops to change research culture, given our experiences in teaching workshops on climate activism & open scholarship.
With @anne-urai.bsky.social @clarekelly.bsky.social @annaveer.bsky.social
📝 rdcu.be/eXja4
🧪 #AcademicSky
With @anne-urai.bsky.social @clarekelly.bsky.social @annaveer.bsky.social
📝 rdcu.be/eXja4
🧪 #AcademicSky
Did not think I'd witness a Nature journal publish a piece calling the US a fascist country in the title / abstract.
Thanks to Lauren and the rest of the team for picking up this crucial fight — in this paper and elsewhere. Please read and share widely.
Thanks to Lauren and the rest of the team for picking up this crucial fight — in this paper and elsewhere. Please read and share widely.
Just accepted at Nature Mental Health:
Crises and Opportunities for Psychological Science under Fascism
https://doi.org/10.31234/osf.io/nz42x_v3
1/9
Crises and Opportunities for Psychological Science under Fascism
https://doi.org/10.31234/osf.io/nz42x_v3
1/9
January 6, 2026 at 11:03 AM
Did not think I'd witness a Nature journal publish a piece calling the US a fascist country in the title / abstract.
Thanks to Lauren and the rest of the team for picking up this crucial fight — in this paper and elsewhere. Please read and share widely.
Thanks to Lauren and the rest of the team for picking up this crucial fight — in this paper and elsewhere. Please read and share widely.
Interesting take (including shared simulations) on the study.
This paper had a pretty shocking headline result (40% of voxels!), so I dug into it, and I think it is wrong. Essentially: they compare two noisy measures and find that about 40% of voxels have different sign between the two. I think this is just noise!
Would love to hear expert views on this paper. It appears to show that the operationalization of brain activity the field has relied on for 3 decades—the BOLD response—is not actually a sensible measure of brain activity.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
January 6, 2026 at 10:40 AM
Interesting take (including shared simulations) on the study.
Reposted by Eiko Fried
Feel like this fresh year needs some serious culture change?
We got you covered! With @clarekelly.bsky.social @eikofried.bsky.social Anna van 't Veer
📝 rdcu.be/eXja4
We got you covered! With @clarekelly.bsky.social @eikofried.bsky.social Anna van 't Veer
📝 rdcu.be/eXja4
January 5, 2026 at 3:46 PM
Feel like this fresh year needs some serious culture change?
We got you covered! With @clarekelly.bsky.social @eikofried.bsky.social Anna van 't Veer
📝 rdcu.be/eXja4
We got you covered! With @clarekelly.bsky.social @eikofried.bsky.social Anna van 't Veer
📝 rdcu.be/eXja4