Nicholas Judd
@njudd.com
Jacobs & Pro Futura Scientia Fellow
Researcher @ StockholmUni + Donders + Swedish Collegium
environment effects -> cognitive and neural dev
Researcher @ StockholmUni + Donders + Swedish Collegium
environment effects -> cognitive and neural dev
Reposted by Nicholas Judd
a while back i threatened to share this. finally online
for detection tasks we often systematically estimates sensitivity wrong. we need to control for unequal variance in models, but we often don't coz it needs extra data
now there's a virtually 'free' way to do it
www.cell.com/iscience/pdf...
for detection tasks we often systematically estimates sensitivity wrong. we need to control for unequal variance in models, but we often don't coz it needs extra data
now there's a virtually 'free' way to do it
www.cell.com/iscience/pdf...
www.cell.com
February 13, 2026 at 3:39 AM
a while back i threatened to share this. finally online
for detection tasks we often systematically estimates sensitivity wrong. we need to control for unequal variance in models, but we often don't coz it needs extra data
now there's a virtually 'free' way to do it
www.cell.com/iscience/pdf...
for detection tasks we often systematically estimates sensitivity wrong. we need to control for unequal variance in models, but we often don't coz it needs extra data
now there's a virtually 'free' way to do it
www.cell.com/iscience/pdf...
Reposted by Nicholas Judd
This is finally out in NeuroInformatics "Enhancing fMRI Decoded Neurofeedback with Co-adaptive Training: Simulation and Proof-of-principle Evidence" shorturl.at/XCwve and the updated PyDecNef repo github.com/pydecnef/Pyd...
@hakwan.bsky.social @meganakpeters.bsky.social @neuroaure.bsky.social
@hakwan.bsky.social @meganakpeters.bsky.social @neuroaure.bsky.social
Enhancing fMRI Decoded Neurofeedback with Co-adaptive Training: Simulation and Proof-of-principle Evidence - Neuroinformatics
A significant challenge for neurofeedback training research and related clinical applications, is participants’ difficulty in learning to induce specific brain patterns during training. Here, we addre...
link.springer.com
February 10, 2026 at 8:47 AM
This is finally out in NeuroInformatics "Enhancing fMRI Decoded Neurofeedback with Co-adaptive Training: Simulation and Proof-of-principle Evidence" shorturl.at/XCwve and the updated PyDecNef repo github.com/pydecnef/Pyd...
@hakwan.bsky.social @meganakpeters.bsky.social @neuroaure.bsky.social
@hakwan.bsky.social @meganakpeters.bsky.social @neuroaure.bsky.social
Reposted by Nicholas Judd
Despite decades of research there are still no reliable biomarkers for any of the major psychiatric diagnoses. In this now published perspective in Molecular Psychiatry we consolidate evidence from genetics, exposome and neuroimaging research on the potential reasons underlying these failures.
The many-to-many problem of endophenotypes in psychiatry - a biological perspective - Molecular Psychiatry
Molecular Psychiatry - The many-to-many problem of endophenotypes in psychiatry - a biological perspective
www.nature.com
February 10, 2026 at 6:20 AM
Despite decades of research there are still no reliable biomarkers for any of the major psychiatric diagnoses. In this now published perspective in Molecular Psychiatry we consolidate evidence from genetics, exposome and neuroimaging research on the potential reasons underlying these failures.
Reposted by Nicholas Judd
Now in press one of my last PhD projects! We traced the neurobiological profile of fMRI BOLD signal variability, a measure that has been related to age, behaviour, disease status, but had not yet been fully contextualised within the brain's multiscale architecture. www.nature.com/articles/s41...
The biological role of local and global fMRI BOLD signal variability in multiscale human brain organization - Nature Communications
Baracchini et al. reveal that temporal variability in fMRI brain signals encodes biologically meaningful information across spatial and temporal scales, highlighting its role in healthy brain function...
www.nature.com
January 30, 2026 at 9:33 PM
Now in press one of my last PhD projects! We traced the neurobiological profile of fMRI BOLD signal variability, a measure that has been related to age, behaviour, disease status, but had not yet been fully contextualised within the brain's multiscale architecture. www.nature.com/articles/s41...
Reposted by Nicholas Judd
There are also meaningful differences in school proximity to hazardous sites by state. Even among states with similar site and population densities, the share of sites located near schools varies, suggesting the influence of local policy and land-use decisions.
5/
5/
January 26, 2026 at 4:32 PM
There are also meaningful differences in school proximity to hazardous sites by state. Even among states with similar site and population densities, the share of sites located near schools varies, suggesting the influence of local policy and land-use decisions.
5/
5/
Reposted by Nicholas Judd
The CNG plot thickens - which method recovers correctly a true number of factors? 🍿👇
In factor analysis, why does the commonly used CNG method nearly always land at 3 factors when applied to anx/depr/ocd scales?
TLDR: There tends to be one factor/component with a large eigenvalue. In these cases, almost inevitably and somewhat arbitrarily, the procedure selects 3 factors 👇
TLDR: There tends to be one factor/component with a large eigenvalue. In these cases, almost inevitably and somewhat arbitrarily, the procedure selects 3 factors 👇
January 8, 2026 at 6:34 PM
The CNG plot thickens - which method recovers correctly a true number of factors? 🍿👇
Going to @sfn.org?
Come check out my poster tomorrow [LBP078], Saturday from 14-15, on how wildfire smoke exposure impacts adolescent cognitive and neural trajectories! #SfN25 #SfN2025
eppro02.ativ.me/appinfo.php?...
#SfN25
Come check out my poster tomorrow [LBP078], Saturday from 14-15, on how wildfire smoke exposure impacts adolescent cognitive and neural trajectories! #SfN25 #SfN2025
eppro02.ativ.me/appinfo.php?...
#SfN25
November 14, 2025 at 4:58 PM
Going to @sfn.org?
Come check out my poster tomorrow [LBP078], Saturday from 14-15, on how wildfire smoke exposure impacts adolescent cognitive and neural trajectories! #SfN25 #SfN2025
eppro02.ativ.me/appinfo.php?...
#SfN25
Come check out my poster tomorrow [LBP078], Saturday from 14-15, on how wildfire smoke exposure impacts adolescent cognitive and neural trajectories! #SfN25 #SfN2025
eppro02.ativ.me/appinfo.php?...
#SfN25
Reposted by Nicholas Judd
You can read both the manifesto and the report here: www.dejongeakademie.nl/en/news/3148... and some coverage in e.g. the @foliacivitatis.bsky.social here www.folia.nl/en/actueel/1...
Universities should be more ambitious in the climate transition, according to The Young Academy - De Jonge Akademie
News
www.dejongeakademie.nl
November 4, 2025 at 2:49 PM
You can read both the manifesto and the report here: www.dejongeakademie.nl/en/news/3148... and some coverage in e.g. the @foliacivitatis.bsky.social here www.folia.nl/en/actueel/1...
Reposted by Nicholas Judd
JASP Raincloud plots! More transparency, clearer patterns, better science. New BRM paper by @vlott.bsky.social, @donvdbergh.bsky.social, @fbartos.bsky.social, @njudd.com, @jordyvanlangen.bsky.social, @lukekorthals.bsky.social, @rogierk.bsky.social, @ejwagenmakers.bsky.social et al.
Resources for Research
This section provides brief summaries of selected resources for research that have been published in journals of the Psychonomic Society, typically Behavior Research Methods. These resources consis…
wp.me
September 18, 2025 at 8:00 PM
JASP Raincloud plots! More transparency, clearer patterns, better science. New BRM paper by @vlott.bsky.social, @donvdbergh.bsky.social, @fbartos.bsky.social, @njudd.com, @jordyvanlangen.bsky.social, @lukekorthals.bsky.social, @rogierk.bsky.social, @ejwagenmakers.bsky.social et al.
Reposted by Nicholas Judd
👀
From Maps to Models: A Survey on the Reliability of Small Studies of Task-Based fMRI | bioRxiv www.biorxiv.org/content/10.1...
From Maps to Models: A Survey on the Reliability of Small Studies of Task-Based fMRI | bioRxiv www.biorxiv.org/content/10.1...
October 3, 2025 at 12:09 AM
👀
From Maps to Models: A Survey on the Reliability of Small Studies of Task-Based fMRI | bioRxiv www.biorxiv.org/content/10.1...
From Maps to Models: A Survey on the Reliability of Small Studies of Task-Based fMRI | bioRxiv www.biorxiv.org/content/10.1...
Reposted by Nicholas Judd
Since search is dead, how soon do you think Google Scholar is headed for the Google Graveyard? I'm betting it's soon, and academia is NOT prepared
Google Scholar Is Doomed
Academia built entire careers on a free Google service with zero guarantees. What could go wrong?
hannahshelley.neocities.org
August 13, 2025 at 1:28 AM
Since search is dead, how soon do you think Google Scholar is headed for the Google Graveyard? I'm betting it's soon, and academia is NOT prepared
Reposted by Nicholas Judd
Our position paper is now out: "Learning Variability Network Exchange (LEVANTE): A Global Framework for Measuring Children's Learning Variability Through Collaborative Data Sharing".
srcd.onlinelibrary.wiley.com/doi/10.1111/...
(preprint: osf.io/preprints/ps...)
What is LEVANTE? 🧵
srcd.onlinelibrary.wiley.com/doi/10.1111/...
(preprint: osf.io/preprints/ps...)
What is LEVANTE? 🧵
August 13, 2025 at 6:09 PM
Our position paper is now out: "Learning Variability Network Exchange (LEVANTE): A Global Framework for Measuring Children's Learning Variability Through Collaborative Data Sharing".
srcd.onlinelibrary.wiley.com/doi/10.1111/...
(preprint: osf.io/preprints/ps...)
What is LEVANTE? 🧵
srcd.onlinelibrary.wiley.com/doi/10.1111/...
(preprint: osf.io/preprints/ps...)
What is LEVANTE? 🧵
Reposted by Nicholas Judd
Random Intercepts and Slopes in Longitudinal Models: When Are They "Good" and "Bad" Controls?
or
Illusory Traits 2: Revenge of the Slopes
Led by Siling Guo, with Nicolas Hübner, Steffen Zitzmann, Martin Hecht, and Kou Murayama.
Comments welcome!
osf.io/preprints/ps...
or
Illusory Traits 2: Revenge of the Slopes
Led by Siling Guo, with Nicolas Hübner, Steffen Zitzmann, Martin Hecht, and Kou Murayama.
Comments welcome!
osf.io/preprints/ps...
OSF
osf.io
July 25, 2025 at 5:58 PM
Random Intercepts and Slopes in Longitudinal Models: When Are They "Good" and "Bad" Controls?
or
Illusory Traits 2: Revenge of the Slopes
Led by Siling Guo, with Nicolas Hübner, Steffen Zitzmann, Martin Hecht, and Kou Murayama.
Comments welcome!
osf.io/preprints/ps...
or
Illusory Traits 2: Revenge of the Slopes
Led by Siling Guo, with Nicolas Hübner, Steffen Zitzmann, Martin Hecht, and Kou Murayama.
Comments welcome!
osf.io/preprints/ps...
New personal record of desk rejects 🥳
I am taking a note of journals that take over a month for the desk 📖
It is also a unusual situation where pretty much everything has been already reviewed at eLife on our Neuro paper (click for open reviews), now the sample size is just substantially larger.
I am taking a note of journals that take over a month for the desk 📖
It is also a unusual situation where pretty much everything has been already reviewed at eLife on our Neuro paper (click for open reviews), now the sample size is just substantially larger.
July 1, 2025 at 11:54 AM
New personal record of desk rejects 🥳
I am taking a note of journals that take over a month for the desk 📖
It is also a unusual situation where pretty much everything has been already reviewed at eLife on our Neuro paper (click for open reviews), now the sample size is just substantially larger.
I am taking a note of journals that take over a month for the desk 📖
It is also a unusual situation where pretty much everything has been already reviewed at eLife on our Neuro paper (click for open reviews), now the sample size is just substantially larger.
Reposted by Nicholas Judd
Great post! I just read this paper by @drewhalbailey.bsky.social and colleagues that shows the RI-CLPM also performs better than CLPM when there are unmeasured time-varying confounders:
psycnet.apa.org/record/2025-...
psycnet.apa.org/record/2025-...
June 27, 2025 at 6:12 PM
Great post! I just read this paper by @drewhalbailey.bsky.social and colleagues that shows the RI-CLPM also performs better than CLPM when there are unmeasured time-varying confounders:
psycnet.apa.org/record/2025-...
psycnet.apa.org/record/2025-...
Reposted by Nicholas Judd
Reliability paradox. It is not a paradox. osf.io/mu896_v1
OSF
osf.io
May 5, 2025 at 9:45 AM
Reliability paradox. It is not a paradox. osf.io/mu896_v1
Reposted by Nicholas Judd
🚨New Preprint alert!
ANS and spatial skills are the same thing!
doi.org/10.31234/osf...
We aimed to explore how the Approximate Numbers Sense (ANS) and spatial skills related over time, but instead found that they are the same underlying construct.
ANS and spatial skills are the same thing!
doi.org/10.31234/osf...
We aimed to explore how the Approximate Numbers Sense (ANS) and spatial skills related over time, but instead found that they are the same underlying construct.
OSF
doi.org
May 16, 2025 at 2:40 PM
🚨New Preprint alert!
ANS and spatial skills are the same thing!
doi.org/10.31234/osf...
We aimed to explore how the Approximate Numbers Sense (ANS) and spatial skills related over time, but instead found that they are the same underlying construct.
ANS and spatial skills are the same thing!
doi.org/10.31234/osf...
We aimed to explore how the Approximate Numbers Sense (ANS) and spatial skills related over time, but instead found that they are the same underlying construct.
Reposted by Nicholas Judd
🚨 “Good Description” with @annagbusse.bsky.social 🚨
What sets 'good' description apart from 'mere' description?
We develop a framework for evaluating descriptive research, whether we are doing it as scholars or assessing it as readers.
Two main contributions...
🔗📄 tinyurl.com/gooddesc
What sets 'good' description apart from 'mere' description?
We develop a framework for evaluating descriptive research, whether we are doing it as scholars or assessing it as readers.
Two main contributions...
🔗📄 tinyurl.com/gooddesc
good_description/good_description_ddk_agb.pdf at main · ddekadt/good_description
Homepage of "Good Description" by Daniel de Kadt & Anna Grzymala-Busse - ddekadt/good_description
tinyurl.com
May 14, 2025 at 9:52 PM
🚨 “Good Description” with @annagbusse.bsky.social 🚨
What sets 'good' description apart from 'mere' description?
We develop a framework for evaluating descriptive research, whether we are doing it as scholars or assessing it as readers.
Two main contributions...
🔗📄 tinyurl.com/gooddesc
What sets 'good' description apart from 'mere' description?
We develop a framework for evaluating descriptive research, whether we are doing it as scholars or assessing it as readers.
Two main contributions...
🔗📄 tinyurl.com/gooddesc
Reposted by Nicholas Judd
not a visualization but a good paper about this
direct.mit.edu/rest/article...
direct.mit.edu/rest/article...
Omitted Variable Bias in Interacted Models: A Cautionary Tale
Abstract. We highlight that analyses using interaction terms to study treatment effect heterogeneity are susceptible to a form of omitted variable bias that is often overlooked in economics. Unlike mo...
direct.mit.edu
May 9, 2025 at 4:22 PM
not a visualization but a good paper about this
direct.mit.edu/rest/article...
direct.mit.edu/rest/article...
Reposted by Nicholas Judd
Choose Science. Choose Europe.
A new Marie Skłodowska-Curie Actions Postdoctoral Fellowships 2025 call is now open.
With a budget of €404.3 million, it will support around 1,650 researchers from Europe and beyond.
Apply by 10 September → europa.eu/!fBTMgF
A new Marie Skłodowska-Curie Actions Postdoctoral Fellowships 2025 call is now open.
With a budget of €404.3 million, it will support around 1,650 researchers from Europe and beyond.
Apply by 10 September → europa.eu/!fBTMgF
May 8, 2025 at 10:12 AM
Choose Science. Choose Europe.
A new Marie Skłodowska-Curie Actions Postdoctoral Fellowships 2025 call is now open.
With a budget of €404.3 million, it will support around 1,650 researchers from Europe and beyond.
Apply by 10 September → europa.eu/!fBTMgF
A new Marie Skłodowska-Curie Actions Postdoctoral Fellowships 2025 call is now open.
With a budget of €404.3 million, it will support around 1,650 researchers from Europe and beyond.
Apply by 10 September → europa.eu/!fBTMgF
Reposted by Nicholas Judd
Are you an international early career scholar considering spending time in the Netherlands? We likely have capacity to host a Marie Curie Fellow if you are interested. Our lab (lifespancognitivedynamics.com) works on modeling cognitive change in early or later life, at short and long timescales.
May 6, 2025 at 8:08 AM
Are you an international early career scholar considering spending time in the Netherlands? We likely have capacity to host a Marie Curie Fellow if you are interested. Our lab (lifespancognitivedynamics.com) works on modeling cognitive change in early or later life, at short and long timescales.
Reposted by Nicholas Judd
A paper I find extremely interesting on the equivalence between fixed effects models and "tweaked" random effects models:
doi.org/10.1017/pan....
doi.org/10.1017/pan....
Understanding, Choosing, and Unifying Multilevel and Fixed Effect Approaches | Political Analysis | Cambridge Core
Understanding, Choosing, and Unifying Multilevel and Fixed Effect Approaches - Volume 30 Issue 1
doi.org
May 6, 2025 at 3:30 PM
A paper I find extremely interesting on the equivalence between fixed effects models and "tweaked" random effects models:
doi.org/10.1017/pan....
doi.org/10.1017/pan....
Reposted by Nicholas Judd
Good question! I think in that setup just drawing the DAG (with repeated nodes) may be the starting point? The paper on outcome-wide longitudinal designs may also be helpful: content.sph.harvard.edu/wwwhsph/site... >
content.sph.harvard.edu
May 3, 2025 at 3:39 AM
Good question! I think in that setup just drawing the DAG (with repeated nodes) may be the starting point? The paper on outcome-wide longitudinal designs may also be helpful: content.sph.harvard.edu/wwwhsph/site... >
Reposted by Nicholas Judd
This 2024 gem by @marinopagan.bsky.social has also changed how I think (about individual variability and the importance of complex systems to measure things we've never measured before):
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Individual variability of neural computations underlying flexible decisions - Nature
Behavioural experiments to study decision-making in response to context-dependent accumulation of evidence provide testable models that are consistent with the heterogeneity in neural signatures among...
www.nature.com
April 30, 2025 at 7:47 PM
This 2024 gem by @marinopagan.bsky.social has also changed how I think (about individual variability and the importance of complex systems to measure things we've never measured before):
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Nicholas Judd
Big performance differences by parental education 📊
While boys and girls scored similarly, a striking education gradient emerged:
🎓 Children of Master's-educated parents mostly scored above the mean
🧑🔧 Children of lower-secondary educated parents mostly scored below the mean
doi.org/10.31234/osf... 🧵
While boys and girls scored similarly, a striking education gradient emerged:
🎓 Children of Master's-educated parents mostly scored above the mean
🧑🔧 Children of lower-secondary educated parents mostly scored below the mean
doi.org/10.31234/osf... 🧵
April 13, 2025 at 8:23 AM
Big performance differences by parental education 📊
While boys and girls scored similarly, a striking education gradient emerged:
🎓 Children of Master's-educated parents mostly scored above the mean
🧑🔧 Children of lower-secondary educated parents mostly scored below the mean
doi.org/10.31234/osf... 🧵
While boys and girls scored similarly, a striking education gradient emerged:
🎓 Children of Master's-educated parents mostly scored above the mean
🧑🔧 Children of lower-secondary educated parents mostly scored below the mean
doi.org/10.31234/osf... 🧵