Bruno D. Zumbo
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brunozumbo.bsky.social
Bruno D. Zumbo
@brunozumbo.bsky.social
Professor & Distinguished University Scholar, University of British Columbia.
Mathematical models of mental test scores. Statistical methods for educational & behavioral science.
https://ecps.educ.ubc.ca/bruno-d-zumbo/
Private account; all opinions my own
Reposted by Bruno D. Zumbo
Last call for papers for the 10th integrated HPS conference: March 27 - March 29, 2025 in Pasadena, California. Please consider submitting and share widely. (Deadline: August 18)
#philsky, #philsci, #histsci, #histSTM
10th Integrated History and Philosophy of Science Conference
Integrated History and Philosophy of Science, 10th conference California Institute of Technology, Pasadena, California, 27-29 March 2025 Call for papers The Committee for Integrated Histor...
philevents.org
August 13, 2024 at 3:49 PM
Reposted by Bruno D. Zumbo
A couple of weeks ago I had the pleasure of talking to Carmelina Conterino at the HPS Podcast.
May 23, 2024 at 3:19 PM
Reposted by Bruno D. Zumbo
At last week's NCME conference, I did a workshop on Bayesian latent variable modeling with a focus on the blavaan package. We discussed factor analysis, item response models, and two-level structural equation models. Slides and code are at the first bullet:
Resources
blavaan
ecmerkle.github.io
April 17, 2024 at 2:36 PM
Reposted by Bruno D. Zumbo
Sometimes the best way to support academic freedom is to tell those who summon you that they have no jurisdiction
IIRC, the CEO of Boeing was asked to testify before Congress and simply did not.
Can someone please tell Ivy League presidents that they have a right to argue vigorously against McCarthyism when they’re hauled before Congress?
April 18, 2024 at 9:10 AM
Free webinar for researchers and data analysts conducting survey research. Provides a description and demo of the impact of ignoring survey nonresponses on your conclusions — role of statistical models.
YouTube - youtu.be/2jS58Zs7eek (2:07:53 in length); PDF of lecture notes at tinyurl.com/y8zbdv5n
March 30, 2024 at 11:56 PM
1/2 🧵Regarding the effects of measurement error on regression coefficients, see Figure 2 and the section titled "Errors of Inference Due to Data–Model–Inference Mismatch" in Shear, B. R., & Zumbo, B. D. (2013) doi.org/10.1177/0013...
March 30, 2024 at 11:44 PM

This insightful article by Brian Haig should go a long way toward clearing the muddy waters surroundiing EFA.

Haig B. D. (2005). Exploratory Factor Analysis, Theory Generation, and Scientific Method. Multivariate behavioral research, 40(3), 303–329. doi.org/10.1207/s153...
March 7, 2024 at 12:39 PM
🧵 1/2 New open access paper:
First soup-to-nuts description of my explanation-focused view of test validity.
A dialectic on validity: Explanation-focused and the many ways of being human. “International Journal of Assessment Tools in Education,” vol. 10, pp. 1-96. doi.org/10.21449/ija...
March 7, 2024 at 4:53 AM
I finally took the leap to Bluesky. So far, the interface and system are quite intuitive.

Bio: I am mathematical scientist working on topics in education & social sciences. I’ve devoted a large part of my career on developing what I refer to as measure-theoretic (psychometric) test theory.
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November 25, 2023 at 12:23 AM