Solomon Kurz
@solomonkurz.bsky.social
Clinical psychology researcher | applied statistics geek | so called #RStats influencer
Two-group pre/post data are deceptively simple, and you could analyze them in many different ways, depending on your goals. Here are three blog posts on the topic:
solomonkurz.netlify.app/blog/2022-06...
solomonkurz.netlify.app/blog/2020-12...
solomonkurz.netlify.app/blog/2023-06...
solomonkurz.netlify.app/blog/2022-06...
solomonkurz.netlify.app/blog/2020-12...
solomonkurz.netlify.app/blog/2023-06...
November 10, 2025 at 7:19 PM
Two-group pre/post data are deceptively simple, and you could analyze them in many different ways, depending on your goals. Here are three blog posts on the topic:
solomonkurz.netlify.app/blog/2022-06...
solomonkurz.netlify.app/blog/2020-12...
solomonkurz.netlify.app/blog/2023-06...
solomonkurz.netlify.app/blog/2022-06...
solomonkurz.netlify.app/blog/2020-12...
solomonkurz.netlify.app/blog/2023-06...
Reposted by Solomon Kurz
Peer reviewers-I’m curious, why do you track your reviews with web of science?
November 10, 2025 at 3:39 PM
Peer reviewers-I’m curious, why do you track your reviews with web of science?
Reposted by Solomon Kurz
This one surely has something on offer for every one: In this cross-sectional mediation analysis, the "effects" of soft drink consumption on depression were "mediated" by abundance of Eggerthela in the gut microbiome.
This was sent to me via dm and now you all got to suffer as well.
This was sent to me via dm and now you all got to suffer as well.
Soft Drink Consumption and Depression Mediated by Gut Microbiome Alterations
This cohort study examines the association between soft drink consumption and major depressive disorder diagnosis and severity and whether this association is mediated by changes in the gut microbiota...
jamanetwork.com
November 9, 2025 at 7:19 AM
This one surely has something on offer for every one: In this cross-sectional mediation analysis, the "effects" of soft drink consumption on depression were "mediated" by abundance of Eggerthela in the gut microbiome.
This was sent to me via dm and now you all got to suffer as well.
This was sent to me via dm and now you all got to suffer as well.
Agreed. I'd go further and say if you see language like this in a paper, it's a huge red flag the research team has a poor grasp on statistics.
This is important. People still do this a lot, and it ends up being a back-door method of inferring an interaction (e.g., “effect was significant in women but not men”)
“changes in statistical significance are often not themselves statistically significant. … even large changes in significance levels can correspond to small, nonsignificant changes in the underlying quantities.”
www.tandfonline.com/doi/abs/10.1...
#Statistics
www.tandfonline.com/doi/abs/10.1...
#Statistics
November 9, 2025 at 1:36 PM
Agreed. I'd go further and say if you see language like this in a paper, it's a huge red flag the research team has a poor grasp on statistics.
This is related to a private conversation I had recently.
IMO, if you want to use Bayesian statistics in your professional work, either (a) work through at least one Bayesian textbook yourself or (b) collaborate with someone who has already done that work themselves.
Take your data seriously.
IMO, if you want to use Bayesian statistics in your professional work, either (a) work through at least one Bayesian textbook yourself or (b) collaborate with someone who has already done that work themselves.
Take your data seriously.
November 8, 2025 at 12:18 AM
This is related to a private conversation I had recently.
IMO, if you want to use Bayesian statistics in your professional work, either (a) work through at least one Bayesian textbook yourself or (b) collaborate with someone who has already done that work themselves.
Take your data seriously.
IMO, if you want to use Bayesian statistics in your professional work, either (a) work through at least one Bayesian textbook yourself or (b) collaborate with someone who has already done that work themselves.
Take your data seriously.
Reposted by Solomon Kurz
We have at least TWO postdoctoral fellowship openings on our @unm.edu @casaa.bsky.social T32 NIAAA Training Grant, best consideration date for applications is Nov 15 2025. Join our phenomenal community and enjoy incredible quality of life in beautiful New Mexico. casaa.unm.edu/training/ins...
Application Process ::
Center on Alcohol, Substance use, And Addictions (CASAA) | The University of New Mexico
casaa.unm.edu
November 5, 2025 at 10:30 PM
We have at least TWO postdoctoral fellowship openings on our @unm.edu @casaa.bsky.social T32 NIAAA Training Grant, best consideration date for applications is Nov 15 2025. Join our phenomenal community and enjoy incredible quality of life in beautiful New Mexico. casaa.unm.edu/training/ins...
Reposted by Solomon Kurz
Re-upping since we're just over a week away from the deadline to apply to the TT asst prof position in our clinical area at Vanderbilt! Please consider applying if you're on the job market! RTs appreciated.
I'm happy to announce that Vanderbilt Psychology's clinical area is hiring a TT asst prof this year! Please share with your networks and consider applying if you're on the market! Happy to (try to) answer questions about the search if you have them.
Link here: apply.interfolio.com/173316
Link here: apply.interfolio.com/173316
November 6, 2025 at 7:52 PM
Re-upping since we're just over a week away from the deadline to apply to the TT asst prof position in our clinical area at Vanderbilt! Please consider applying if you're on the job market! RTs appreciated.
"Open Science needs reliable infrastructure"
A recent redesign of OSF by @cos.io led to widespread access failures. What began as a few broken download links became for me a total disappearance of eight years of DOI-registered work. What happened, how was it resolved, and what it reveals about trust and infrastructure in open science
Open Science needs reliable infrastructure – Ven Popov
After OSF’s October 2025 redesign, I discovered that eight years of DOI-linked preprints and materials were silently hidden by an automated spam flag. What happened, how it was resolved, and what it r...
venpopov.com
November 6, 2025 at 7:30 PM
"Open Science needs reliable infrastructure"
Reposted by Solomon Kurz
I strongly recommend @hugoreasoning.bsky.social's book "Not Born Yesterday" if you've been exposed to too much social psychology about irrationality in your youth. press.princeton.edu/books/hardco...
November 6, 2025 at 12:39 PM
I strongly recommend @hugoreasoning.bsky.social's book "Not Born Yesterday" if you've been exposed to too much social psychology about irrationality in your youth. press.princeton.edu/books/hardco...
It's starting to look really bad for this RCT. Do scroll through the PubPeer comments. They're striking.
On the other hand, this is a big win for open science and post-publication peer review.
On the other hand, this is a big win for open science and post-publication peer review.
The dataset for this study has some serious problems: pubpeer.com/publications...
PubPeer - Prevention of acute myocardial infarction induced heart fail...
There are comments on PubPeer for publication: Prevention of acute myocardial infarction induced heart failure by intracoronary infusion of mesenchymal stem cells: phase 3 randomised clinical trial (P...
pubpeer.com
November 4, 2025 at 6:27 PM
It's starting to look really bad for this RCT. Do scroll through the PubPeer comments. They're striking.
On the other hand, this is a big win for open science and post-publication peer review.
On the other hand, this is a big win for open science and post-publication peer review.
Reposted by Solomon Kurz
This, by @vincentab.bsky.social, is the most straight-up *useful* book I’ve bought in a long while.
November 3, 2025 at 6:40 PM
This, by @vincentab.bsky.social, is the most straight-up *useful* book I’ve bought in a long while.
Reposted by Solomon Kurz
I’ve finally had time to write another blog post after a couple of busy months. It’s a tutorial on how to create UpSet plots using only tidyverse packages (and patchwork) in #rstats
https://www.gl-eb.me/blog/posts/2025-11-02_upset/
#dataviz #ggplot2
https://www.gl-eb.me/blog/posts/2025-11-02_upset/
#dataviz #ggplot2
UpSet Plots in the Tidyverse – Gleb Ebert
How to create the components of an UpSet plot and combine them
www.gl-eb.me
November 2, 2025 at 3:23 PM
I’ve finally had time to write another blog post after a couple of busy months. It’s a tutorial on how to create UpSet plots using only tidyverse packages (and patchwork) in #rstats
https://www.gl-eb.me/blog/posts/2025-11-02_upset/
#dataviz #ggplot2
https://www.gl-eb.me/blog/posts/2025-11-02_upset/
#dataviz #ggplot2
New effect size just dropped: The PVPP
New paper finds that selective reporting remains the most replicable finding in science: journals.sagepub.com/doi/full/10.... I especially like their new exploratory metric 'p-values per participant'. Some papers had 11 p-values per participant! 🤯
Sage Journals: Discover world-class research
Subscription and open access journals from Sage, the world's leading independent academic publisher.
journals.sagepub.com
November 1, 2025 at 1:16 AM
New effect size just dropped: The PVPP
Relatedly, I think SESOI is a tremendously useful and under-appreciated concept. It's become a regular tool in my power analysis workflows, and I wish I understood it sooner in my career.
Great points about the clarity the SESOI brings in this context
There still seems to be a lot of confusion about significance testing in psych. No, p-values *don’t* become useless at large N. This flawed point also used to be framed as "too much power". But power isn't the problem – it's 1) unbalanced error rates and 2) the (lack of a) SESOI. 1/ >
October 31, 2025 at 3:42 PM
Relatedly, I think SESOI is a tremendously useful and under-appreciated concept. It's become a regular tool in my power analysis workflows, and I wish I understood it sooner in my career.
Great points about the clarity the SESOI brings in this context
There still seems to be a lot of confusion about significance testing in psych. No, p-values *don’t* become useless at large N. This flawed point also used to be framed as "too much power". But power isn't the problem – it's 1) unbalanced error rates and 2) the (lack of a) SESOI. 1/ >
But here's, the thing, p values and significance become useless at such large sample sizes. When you're dividing the coefficient by the SE and the sample size is in the tens of thousands, EVERYTHING IS SIGNIFICANT. All you're testing is whether the coefficient is different than zero.
October 31, 2025 at 1:39 PM
Great points about the clarity the SESOI brings in this context
Reposted by Solomon Kurz
New release of PowerLMM.js! Browser-based power analysis for longitudinal models with dropout.
Now includes:
- Power analysis summary report
- Reproducible & shareable configs (URL/JSON)
- Calculations validated against R
- Hypothesis region visualization
powerlmmjs.rpsychologist.com
Now includes:
- Power analysis summary report
- Reproducible & shareable configs (URL/JSON)
- Calculations validated against R
- Hypothesis region visualization
powerlmmjs.rpsychologist.com
October 28, 2025 at 2:02 PM
New release of PowerLMM.js! Browser-based power analysis for longitudinal models with dropout.
Now includes:
- Power analysis summary report
- Reproducible & shareable configs (URL/JSON)
- Calculations validated against R
- Hypothesis region visualization
powerlmmjs.rpsychologist.com
Now includes:
- Power analysis summary report
- Reproducible & shareable configs (URL/JSON)
- Calculations validated against R
- Hypothesis region visualization
powerlmmjs.rpsychologist.com
Reposted by Solomon Kurz
We wrote an article explaining why you shouldn't put several variables into a regression model and report which are statistically significant - even as exploratory research. bmjmedicine.bmj.com/content/4/1/.... How did we do?
October 27, 2025 at 5:39 PM
We wrote an article explaining why you shouldn't put several variables into a regression model and report which are statistically significant - even as exploratory research. bmjmedicine.bmj.com/content/4/1/.... How did we do?
Reposted by Solomon Kurz
October 28, 2025 at 11:34 AM
Latent group analyses are the singing sirens of applied statistics
It’s astonishing how many researchers seem to believe that a cluster analysis is such a sensible analysis that it needn’t even be justified through a coherent research question. Just cluster analysis go brrrrr
October 27, 2025 at 3:59 PM
Latent group analyses are the singing sirens of applied statistics
Reposted by Solomon Kurz
What is it like to be a grad student now that AI is a thing? Are we seeing more slop? Are people switching from SaS/STATA to python/R because the learning curve is much less steep with AI?
October 27, 2025 at 2:21 PM
What is it like to be a grad student now that AI is a thing? Are we seeing more slop? Are people switching from SaS/STATA to python/R because the learning curve is much less steep with AI?
Reposted by Solomon Kurz
I am hiring PhD candidates to study the psychology of attention & technology use at @tilburg-university.bsky.social.
We're looking for motivated & curious scholars with expertise in cognitive psychology and statistics, and offer a friendly work environment with great terms & benefits.
tiu.nu/22989
We're looking for motivated & curious scholars with expertise in cognitive psychology and statistics, and offer a friendly work environment with great terms & benefits.
tiu.nu/22989
October 23, 2025 at 3:04 PM
I am hiring PhD candidates to study the psychology of attention & technology use at @tilburg-university.bsky.social.
We're looking for motivated & curious scholars with expertise in cognitive psychology and statistics, and offer a friendly work environment with great terms & benefits.
tiu.nu/22989
We're looking for motivated & curious scholars with expertise in cognitive psychology and statistics, and offer a friendly work environment with great terms & benefits.
tiu.nu/22989
Reposted by Solomon Kurz
I’m beginning to suspect that many academics and pundits don’t realize demography is a distinct discipline. As in, it has its own methods, theories, and actual training programs.
You can’t just call yourself a demographer because you find demographic topics interesting and are good at math.
You can’t just call yourself a demographer because you find demographic topics interesting and are good at math.
a man in a suit and tie is saying " that 's not how it works "
ALT: a man in a suit and tie is saying " that 's not how it works "
media.tenor.com
October 22, 2025 at 9:37 PM
I’m beginning to suspect that many academics and pundits don’t realize demography is a distinct discipline. As in, it has its own methods, theories, and actual training programs.
You can’t just call yourself a demographer because you find demographic topics interesting and are good at math.
You can’t just call yourself a demographer because you find demographic topics interesting and are good at math.