Jens Fünderich
@jensfuenderich.bsky.social
Research Synthesis | Meta-Science | Scientific Reform
Reposted by Jens Fünderich
I tried to explain what's happening in that recent paper about the heritability of human lifespan: dynomight.net/lifespan/
February 6, 2026 at 12:58 PM
I tried to explain what's happening in that recent paper about the heritability of human lifespan: dynomight.net/lifespan/
Reposted by Jens Fünderich
How many versions of the Iowa Gambling Task (IGT) exist? And how much does this affect research using the IGT? More than you might think. 🧵
Methodological Flexibility in the Iowa Gambling Task Undermines Interpretability: A Meta-method Review: https://osf.io/4g3vr
January 25, 2026 at 11:16 AM
How many versions of the Iowa Gambling Task (IGT) exist? And how much does this affect research using the IGT? More than you might think. 🧵
Reposted by Jens Fünderich
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
"A cat in the wall can either indicate a serious health problem (e.g., neurological, pain, vision loss) or indicate boredom, stress, or hunting instinct [...]." - Gemini (2026)
In response to me typing "cat in the wall" in google search (to find out more about this: en.wikipedia.org/wiki/Dried_cat)
In response to me typing "cat in the wall" in google search (to find out more about this: en.wikipedia.org/wiki/Dried_cat)
January 20, 2026 at 4:32 PM
"A cat in the wall can either indicate a serious health problem (e.g., neurological, pain, vision loss) or indicate boredom, stress, or hunting instinct [...]." - Gemini (2026)
In response to me typing "cat in the wall" in google search (to find out more about this: en.wikipedia.org/wiki/Dried_cat)
In response to me typing "cat in the wall" in google search (to find out more about this: en.wikipedia.org/wiki/Dried_cat)
Reposted by Jens Fünderich
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...
Reposted by Jens Fünderich
NEW article by me!
We can now visualize pathogens down to atoms; design vaccines in weeks; manufacture them in microbial factories; engineer them more precise than ever before.
We're living through a golden age of vaccine development, but only if we continue to invest in them.
We can now visualize pathogens down to atoms; design vaccines in weeks; manufacture them in microbial factories; engineer them more precise than ever before.
We're living through a golden age of vaccine development, but only if we continue to invest in them.
The golden age of vaccine development - Works in Progress Magazine
The first vaccine was a lucky accident. Now we can design new vaccines in weeks, atom by atom.
worksinprogress.co
January 7, 2026 at 3:20 PM
NEW article by me!
We can now visualize pathogens down to atoms; design vaccines in weeks; manufacture them in microbial factories; engineer them more precise than ever before.
We're living through a golden age of vaccine development, but only if we continue to invest in them.
We can now visualize pathogens down to atoms; design vaccines in weeks; manufacture them in microbial factories; engineer them more precise than ever before.
We're living through a golden age of vaccine development, but only if we continue to invest in them.
Reposted by Jens Fünderich
Scientific funding is a net negative: "European taxpayers will have spent more on the funding process than on the funding itself, and the scientific ecosystem has been drained"
www.nature.com/articles/d41...
www.nature.com/articles/d41...
Point of no returns: researchers are crossing a threshold in the fight for funding
With so little money to go round, the costs of competing for grants can exceed what the grants are worth. When that happens, nobody wins.
www.nature.com
January 4, 2026 at 8:56 AM
Scientific funding is a net negative: "European taxpayers will have spent more on the funding process than on the funding itself, and the scientific ecosystem has been drained"
www.nature.com/articles/d41...
www.nature.com/articles/d41...
Reposted by Jens Fünderich
Finally, @bjoernhommel.bsky.social's and my paper introducing the SurveyBot3000 is officially out in AMPPS. It's a fine-tuned language model that guesstimates correlations between survey items from text alone. Not perfectly, but useful for search, for example.
journals.sagepub.com/doi/10.1177/...
journals.sagepub.com/doi/10.1177/...
December 18, 2025 at 8:21 PM
Finally, @bjoernhommel.bsky.social's and my paper introducing the SurveyBot3000 is officially out in AMPPS. It's a fine-tuned language model that guesstimates correlations between survey items from text alone. Not perfectly, but useful for search, for example.
journals.sagepub.com/doi/10.1177/...
journals.sagepub.com/doi/10.1177/...
Reposted by Jens Fünderich
Many psychologists are treating LLMs as if they are the mind of god.
This study had chatGPT rate how central academic disciplines are to various constructs.
Why would chatGPT know this?
Where is the evidence its ratings are reliable or valid?
compass.onlinelibrary.wiley.com/doi/full/10....
This study had chatGPT rate how central academic disciplines are to various constructs.
Why would chatGPT know this?
Where is the evidence its ratings are reliable or valid?
compass.onlinelibrary.wiley.com/doi/full/10....
December 10, 2025 at 10:09 AM
Many psychologists are treating LLMs as if they are the mind of god.
This study had chatGPT rate how central academic disciplines are to various constructs.
Why would chatGPT know this?
Where is the evidence its ratings are reliable or valid?
compass.onlinelibrary.wiley.com/doi/full/10....
This study had chatGPT rate how central academic disciplines are to various constructs.
Why would chatGPT know this?
Where is the evidence its ratings are reliable or valid?
compass.onlinelibrary.wiley.com/doi/full/10....
"Visible learning" (Hattie) had a strong influence on what & how students have been taught around the world, including me during my master's at @unierfurt.bsky.social.
Kalmendal et al. have a preprint out, detailing serious quality concerns in his non-peer-reviewed book:
osf.io/preprints/ps...
Kalmendal et al. have a preprint out, detailing serious quality concerns in his non-peer-reviewed book:
osf.io/preprints/ps...
OSF
osf.io
December 9, 2025 at 10:53 AM
"Visible learning" (Hattie) had a strong influence on what & how students have been taught around the world, including me during my master's at @unierfurt.bsky.social.
Kalmendal et al. have a preprint out, detailing serious quality concerns in his non-peer-reviewed book:
osf.io/preprints/ps...
Kalmendal et al. have a preprint out, detailing serious quality concerns in his non-peer-reviewed book:
osf.io/preprints/ps...
Reposted by Jens Fünderich
So...my undergrad thesis student is doing a quality analysis of studies found in meta-analyses. She identified a few and we contacted the authors to request their effect sizes and other variables for the studies in their papers.
Here's what happened:
scientiapsychiatrica.com/index.php/Sc...
Here's what happened:
scientiapsychiatrica.com/index.php/Sc...
The Impact of Social Media on Adolescent Mental Health: A Meta-Analysis | Scientia Psychiatrica
Introduction: The proliferation of social media has raised significant concerns about its potential effects on the mental health of adolescents. This meta-analysis aims to provide a comprehensive asse...
scientiapsychiatrica.com
December 7, 2025 at 11:11 PM
So...my undergrad thesis student is doing a quality analysis of studies found in meta-analyses. She identified a few and we contacted the authors to request their effect sizes and other variables for the studies in their papers.
Here's what happened:
scientiapsychiatrica.com/index.php/Sc...
Here's what happened:
scientiapsychiatrica.com/index.php/Sc...
Cutting down on em dashes—by far the hardest and least enjoyable part of writing in APA format!
Support the EDLF* (Em-Dash Liberation Front) — you know it makes sense!
*Avoid the splitters of the MDLF!
*Avoid the splitters of the MDLF!
December 4, 2025 at 4:59 PM
Cutting down on em dashes—by far the hardest and least enjoyable part of writing in APA format!
Reposted by Jens Fünderich
"In 2019 we notified journals about serious integrity concerns in 172 clinical trials. Over five years later, only 22 have been retracted. The 135 unretracted trials have 1989 citations in systematic reviews, clinical guidelines, and consensus statements"
[paraphrased]
www.bmj.com/content/390/...
[paraphrased]
www.bmj.com/content/390/...
November 28, 2025 at 10:11 AM
"In 2019 we notified journals about serious integrity concerns in 172 clinical trials. Over five years later, only 22 have been retracted. The 135 unretracted trials have 1989 citations in systematic reviews, clinical guidelines, and consensus statements"
[paraphrased]
www.bmj.com/content/390/...
[paraphrased]
www.bmj.com/content/390/...
Yay! We took the umbrella observed by @jamesheathers.bsky.social et al. (2016), formalized a version of it, and explored what we can learn from it regarding power and heterogeneity analysis. Article now out at BRM: rdcu.be/eRAyW. Many thx to my coauthors @lbnhr.bsky.social and @renkew.bsky.social!
Under my umbrella: Rating scales obscure statistical power and effect size heterogeneity
rdcu.be
November 27, 2025 at 8:10 PM
Yay! We took the umbrella observed by @jamesheathers.bsky.social et al. (2016), formalized a version of it, and explored what we can learn from it regarding power and heterogeneity analysis. Article now out at BRM: rdcu.be/eRAyW. Many thx to my coauthors @lbnhr.bsky.social and @renkew.bsky.social!
Inhibiting and facilitating conditions of the h̶u̶m̶a̶n̶ smile: a n̶o̶n̶obtrusive test of the facial feedback hypothesis (Strack et al., 1988)
November 26, 2025 at 2:23 PM
Inhibiting and facilitating conditions of the h̶u̶m̶a̶n̶ smile: a n̶o̶n̶obtrusive test of the facial feedback hypothesis (Strack et al., 1988)
My new favorite first sentence of a psych paper:
"From San Francisco to Santiago, Sydney to Seoul, people want to be cool (Belk et al., 2010; Heath & Potter, 2004; Rahman, 2013)."
- Cool People (Pezzuti et al., 2025).
Just a bit unsettling how close that sounds to "What's the deal with birds?"
"From San Francisco to Santiago, Sydney to Seoul, people want to be cool (Belk et al., 2010; Heath & Potter, 2004; Rahman, 2013)."
- Cool People (Pezzuti et al., 2025).
Just a bit unsettling how close that sounds to "What's the deal with birds?"
September 12, 2025 at 12:27 PM
My new favorite first sentence of a psych paper:
"From San Francisco to Santiago, Sydney to Seoul, people want to be cool (Belk et al., 2010; Heath & Potter, 2004; Rahman, 2013)."
- Cool People (Pezzuti et al., 2025).
Just a bit unsettling how close that sounds to "What's the deal with birds?"
"From San Francisco to Santiago, Sydney to Seoul, people want to be cool (Belk et al., 2010; Heath & Potter, 2004; Rahman, 2013)."
- Cool People (Pezzuti et al., 2025).
Just a bit unsettling how close that sounds to "What's the deal with birds?"
Reposted by Jens Fünderich
For all who use Bayesian hierarchical models, have a look at our new preprint, out now together with @linushof.bsky.social @nunobusch.bsky.social and @thorstenpachur.bsky.social
osf.io/preprints/ps...
osf.io/preprints/ps...
osf.io
September 10, 2025 at 2:41 PM
For all who use Bayesian hierarchical models, have a look at our new preprint, out now together with @linushof.bsky.social @nunobusch.bsky.social and @thorstenpachur.bsky.social
osf.io/preprints/ps...
osf.io/preprints/ps...
Reposted by Jens Fünderich
For Monday crowd. INSPECT-SR, a tool to help you identify problematic (inc. fraudulent) RCTs, now available.
www.medrxiv.org/content/10.1...
INSPECT-SR: A tool for assessing trustworthiness of randomised controlled trials.
INSPECT-SR: A tool for assessing trustworthiness of randomised controlled trials.
INSPECT-SR: a tool for assessing trustworthiness of randomised controlled trials
The integrity of evidence synthesis is threatened by problematic randomised controlled trials (RCTs). These are RCTs where there are serious concerns about the trustworthiness of the data or findings....
www.medrxiv.org
September 8, 2025 at 7:22 AM
For Monday crowd. INSPECT-SR, a tool to help you identify problematic (inc. fraudulent) RCTs, now available.
Reposted by Jens Fünderich
Hello.
The MEP is hiring an intern (a paid one, not an 'ooh ooh think of the experience' one)
retractionwatch.com/job-opportun...
Feel free to direct this to anyone interested. I think it will fill quickly so pitter patter.
The MEP is hiring an intern (a paid one, not an 'ooh ooh think of the experience' one)
retractionwatch.com/job-opportun...
Feel free to direct this to anyone interested. I think it will fill quickly so pitter patter.
Job opportunities at Retraction Watch
Here are our current open positions: Intern, Medical Evidence Project Editor, Medical Evidence Project Staff reporter, Retraction Watch Learn more about The Center for Scientific Integrity, and abo…
retractionwatch.com
September 4, 2025 at 1:56 PM
Hello.
The MEP is hiring an intern (a paid one, not an 'ooh ooh think of the experience' one)
retractionwatch.com/job-opportun...
Feel free to direct this to anyone interested. I think it will fill quickly so pitter patter.
The MEP is hiring an intern (a paid one, not an 'ooh ooh think of the experience' one)
retractionwatch.com/job-opportun...
Feel free to direct this to anyone interested. I think it will fill quickly so pitter patter.
Reposted by Jens Fünderich
New blog post! Calculating a correlation is easy enough. But let's say you calculated two of them and they happen to differ. What follows from that? Turns out there are too many moving parts for an easy answer.
www.the100.ci/2025/07/28/w...
www.the100.ci/2025/07/28/w...
What’s in a correlation?
Correlation may not imply causation, but let’s just ignore that for a second. Correlations are standardized effect size metrics and as such have some quirks by design. These are benign enough when you...
www.the100.ci
July 28, 2025 at 12:21 PM
New blog post! Calculating a correlation is easy enough. But let's say you calculated two of them and they happen to differ. What follows from that? Turns out there are too many moving parts for an easy answer.
www.the100.ci/2025/07/28/w...
www.the100.ci/2025/07/28/w...
Reposted by Jens Fünderich
The first version of the open science blog archive is complete, with 3530 posts from 52 blogs. Browse them in the online Shiny app: shiny.ieis.tue.nl/open_science... All blog posts are ordered chronologically. Have fun exploring part of the open science history in psychology!
July 26, 2025 at 6:10 AM
The first version of the open science blog archive is complete, with 3530 posts from 52 blogs. Browse them in the online Shiny app: shiny.ieis.tue.nl/open_science... All blog posts are ordered chronologically. Have fun exploring part of the open science history in psychology!
I often have trouble finding or connecting to eduroam at my University, but I seem to have made the obvious error of not working on a boat!
Either that, or it's just another example of the Dutch University system being miles ahead of that in Germany.
Either that, or it's just another example of the Dutch University system being miles ahead of that in Germany.
I am literally on a boat and yet I have an eduroam connection
July 25, 2025 at 11:33 AM
I often have trouble finding or connecting to eduroam at my University, but I seem to have made the obvious error of not working on a boat!
Either that, or it's just another example of the Dutch University system being miles ahead of that in Germany.
Either that, or it's just another example of the Dutch University system being miles ahead of that in Germany.
Reposted by Jens Fünderich
🇩🇪 3-year universal basic income (UBI) study, in which n=120 received UBI, n=1500 did not. Website is pretty neat, check it out for core findings.
www.pilotprojekt-grundeinkommen.de/en
www.pilotprojekt-grundeinkommen.de/en
Basic Income Pilot Project / Study results
What does a universal basic income really achieve? Find the results of the first long-term German study here.
www.pilotprojekt-grundeinkommen.de
July 25, 2025 at 7:54 AM
🇩🇪 3-year universal basic income (UBI) study, in which n=120 received UBI, n=1500 did not. Website is pretty neat, check it out for core findings.
www.pilotprojekt-grundeinkommen.de/en
www.pilotprojekt-grundeinkommen.de/en
Reposted by Jens Fünderich
📚 Ten simple rules for failing successfully in academia journals.plos.org/ploscompbiol...
July 22, 2025 at 9:00 AM
📚 Ten simple rules for failing successfully in academia journals.plos.org/ploscompbiol...
Südhof: “There's no structural crisis of fraud or reproducibility.”
Also Südhof: “Yes, there are errors, but we adhered to norms in the field. We all need to figure out how to do a t-test, & how to improve journal practices.”
…and of course it’s all the trainee's and post-doc's errors. Not his.
Also Südhof: “Yes, there are errors, but we adhered to norms in the field. We all need to figure out how to do a t-test, & how to improve journal practices.”
…and of course it’s all the trainee's and post-doc's errors. Not his.
Thomas C. Südhof - Lectures | Lindau Mediatheque
Science Integrity: What Can Go Wrong?
mediatheque.lindau-nobel.org
July 15, 2025 at 9:50 AM
Südhof: “There's no structural crisis of fraud or reproducibility.”
Also Südhof: “Yes, there are errors, but we adhered to norms in the field. We all need to figure out how to do a t-test, & how to improve journal practices.”
…and of course it’s all the trainee's and post-doc's errors. Not his.
Also Südhof: “Yes, there are errors, but we adhered to norms in the field. We all need to figure out how to do a t-test, & how to improve journal practices.”
…and of course it’s all the trainee's and post-doc's errors. Not his.