Solomon Kurz
@solomonkurz.bsky.social
7.2K followers 700 following 1.4K posts
Clinical psychology researcher | applied statistics geek | so called #RStats influencer
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Reposted by Solomon Kurz
tjmahr.com
it does kinda suck that every pre-4.0.0 ggplot2 plot that set theme(base_size) will look different now
solomonkurz.bsky.social
I'm in an earnest kinda mood. So it goes...
solomonkurz.bsky.social
I find it hard to understand how finding the model that best captures your understanding of the data is somehow a bad use of your time.
solomonkurz.bsky.social
Disagree. Even when you pay a hefty premium for insurance, it's best to never use it.
solomonkurz.bsky.social
Also, my fondness for the self-deprecating humor aside, I don't like this take. Learning proper missing data techniques are never a waste of time.
solomonkurz.bsky.social
The key part is that the value is negative, though -0.2 is a good starting point
solomonkurz.bsky.social
Set `position = position_dodge(height = -0.2)` within the point-interval geom so that the vertical ordering in plot matches the vertical ordering in the key.
solomonkurz.bsky.social
I’ve been invited to interesting Slack groups, I’ve received job offers, I’ve been invited to give presentations, and I’ve gotten a book deal.
Reposted by Solomon Kurz
simine.com
My blog has moved! It’s now at sometimesimwrongblog.wordpress.com If you have links to posts in your syllabus, let me know if you have any trouble finding the corresponding post!
solomonkurz.bsky.social
I think we agree.

One *can* interpret sigma from y ~ group + some_covariate, but such a sigma is no longer the population pooled SD in the conventional sense, and is therefore not a great choice for a standardizer of a standardized mean difference (at least not in the typical sense).
solomonkurz.bsky.social
solomonkurz.bsky.social
In other words, sigma from y ~ group + some_covariate is no longer an estimator of the population pooled SD. It's just a statistical artifact at that point.
solomonkurz.bsky.social
In other words, sigma from y ~ group + some_covariate is no longer an estimator of the population pooled SD. It's just a statistical artifact at that point.
solomonkurz.bsky.social
language is very difficult with character limits...
solomonkurz.bsky.social
Thanks. I see what you mean, and should clarify that whereas I recognize that point, sigma from y ~ group is also an estimator of the population pooled SD. When I used the language of residual SD in the open post, I meant from covariates in addition to group.
solomonkurz.bsky.social
Say more about 1. I don't follow. To my mind, it's counter to the logic behind Cohen's d.
solomonkurz.bsky.social
In Ch 19 (nyu-cdsc.github.io/learningr/as...) of his 2nd edition, Kruschke used *residual* SD as a standardizer for group differences from a multilevel ANCOVA. Is there any precedent for using a *residual* SD as a standardizer for a standardized mean difference effect size? #RStats
nyu-cdsc.github.io
Reposted by Solomon Kurz
dingdingpeng.the100.ci
Happy to announce that I'll give a talk on how we can make rigorous causal inference more mainstream 📈

You can sign up for the Zoom link here: tinyurl.com/CIIG-JuliaRo...
Causal inference interest group, supported by the Centre for Longitudinal Studies

Seminar series
20th October 2025, 3pm BST (UTC+1)

"Making rigorous causal inference more mainstream"
Julia Rohrer, Leipzig University

Sign up to attend at tinyurl.com/CIIG-JuliaRohrer
Reposted by Solomon Kurz
ianhussey.mmmdata.io
My article "Data is not available upon request" was published in Meta-Psychology. Very happy to see this out!
open.lnu.se/index.php/me...
LnuOpen | Meta-Psychology
open.lnu.se
Reposted by Solomon Kurz
andrew.heiss.phd
If you've ever wanted to learn how to make beautiful websites with #QuartoPub and #rstats , check out this workshop I'm giving in a couple weeks! It'll be a blast (and we're covering Quarto's brand new _brand dot yaml system!)
stathorizons.bsky.social
Learn to create and publish a professional, data-focused website in “Create an Online Presence with Quarto Websites” on October 16-17, with @andrew.heiss.phd‬! Discover how to use #Quarto to build a variety of websites like personal portfolios, research compendiums, and interactive dashboards.
Quarto Websites | Online Seminar | Code Horizons
This online course taught by Andrew Heiss, Ph.D., teaches you how to use Quarto to build a variety of data-focused websites.
codehorizons.com
solomonkurz.bsky.social
"alcohol use" alone is not a disorder