iiinova — where your digital self keeps evolving

Ryan Bowles @ryanpbowles.bsky.social · 04/11/2025

@profandyfield.com Is it true that the R book is really coming out on Jan. 1? Is there somewhere we can get a table of contents?

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Ryan Bowles @ryanpbowles.bsky.social · 21/08/2025

Many thanks to MSU for issuing policies critical for my syllabus less than a week before the start of classes. After I finished the syllabus.

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Ryan Bowles @ryanpbowles.bsky.social · 21/08/2025

The new Cracker Barrel logo is the visual version of a 50 year old saying skibidi.

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Ryan Bowles @ryanpbowles.bsky.social · 11/07/2025

No, because it's hearsay. And not an exception to hearsay. Or it's an exception to an exception. But not an exception to an exception to an exception.

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Ryan Bowles @ryanpbowles.bsky.social · 20/03/2025

This analysis was supposed to be easy. F*** you, data.

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Ryan Bowles @ryanpbowles.bsky.social · 08/02/2025

Great to see a student in my program get recognized for her expertise.

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Ryan Bowles @ryanpbowles.bsky.social · 16/01/2025

It finally happened. I have a student in my grad stats course whose advisor was once my student in the same grad stats course.

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Ryan Bowles @ryanpbowles.bsky.social · 11/12/2024

Language people: my trivia team had a rhyming question where the answer was Towel Howl. We had a debate about whether those words actually rhyme. Thoughts?

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Ryan Bowles @ryanpbowles.bsky.social · 03/12/2024

Delete everything. If it's important enough, they'll email again. Note: Despite the brilliance of this strategy, I have never been able to implement it.

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Ryan Bowles @ryanpbowles.bsky.social · 02/12/2024

A Likert scale is always some form of Disagree to Agree rating scale. It is a type of rating scale, not synonymous with rating scale. This is a hill I will not die on, because I have given up and have nothing left but to scream into the Bluesky void.

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Reposted by Ryan Bowles

Tobias Dienlin @tobiasdienlin.com · 29/11/2024

Underappreciated fact: „When the entire population is measured there is no need to perform a hypothesis test. After all, there is no pop. to generalize to. When data from the entire pop. has been collected the pop. effect size is known, and there is no confidence interval to compute.“

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Ryan Bowles @ryanpbowles.bsky.social · 16/11/2024

How much different do two samples need to be for factorial in invariance to be meaningful validity evidence? For example, randomly splitting a sample in two and finding factorial invariance is definitely not meaningful validity evidence.

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Ryan Bowles @ryanpbowles.bsky.social · 13/11/2024

I taught a lecture on IRT today, and I have to say that even after 25 years in the field, I don't really get it. In the absence of a causal theory of the response process, what can IRT really say about measurement and validity?

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Ryan Bowles @ryanpbowles.bsky.social · 16/10/2024

Always entertaining to discover what autocaptioning thinks I said in my recorded lecture. Today, I am doing a Principle Commodes Analysis.

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Ryan Bowles @ryanpbowles.bsky.social · 10/10/2024

I changed my email signature to "Best Linear Unbiased Wishes, Ryan" months ago and I just finally got the second comment from a recipient. Perhaps I'm emailing with the wrong kind of people.

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Ryan Bowles @ryanpbowles.bsky.social · 11/09/2024

All of my manuscripts will now have a Concept of Analytical Plan section.

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Ryan Bowles @ryanpbowles.bsky.social · 10/04/2024

The next MSU HDFS Methods speaker is Daniel Cooper. His talk is "Using qualitative research to inform a culturally relevant parenting intervention". The talk is on zoom on 4/16 at 11 am Eastern time. The talk is open to anyone. Email me (bowlesr@msu.edu) for connection info.

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Ryan Bowles @ryanpbowles.bsky.social · 01/04/2024

Reminder that this is tomorrow. Open to anyone.

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Ryan Bowles @ryanpbowles.bsky.social · 26/03/2024

The next MSU HDFS Methods talk is Tu Apr 2 at 11 Eastern time on zoom. Robert Wickham from Northern Arizona U will speak on "Introducing a Framework for Modeling Dyadic Discrepancy". All are welcome. Contact bowlesr@msu.edu for more information.

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Ryan Bowles @ryanpbowles.bsky.social · 20/03/2024

I'm teaching today, so I'm wearing my fancy sneakers. Still getting inspiration from my sabbatical with @schotz.bsky.social five years ago.

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Ryan Bowles @ryanpbowles.bsky.social · 18/03/2024

Looking forward to finding out how much I disagree with them.

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Ryan Bowles @ryanpbowles.bsky.social · 18/03/2024

Coming up tomorrow. Contact me for connection information or to get on our email list.

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Ryan Bowles @ryanpbowles.bsky.social · 15/03/2024

I'll be teaching a course on measurement focused on internal structure validation methods (FA, IRT, Rasch). Need to update syllabus and readings. Any recommendations? Example syllabi?

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Ryan Bowles @ryanpbowles.bsky.social · 06/03/2024

Michigan St U Dept of Human Development and Family Studies has an online methods speaker series. Next talk is 3/19, 11am, and features Denis Dumas from UGA on "When do human raters disagree? An important question to ask before supervised models are trained." Open to all. bowlesr@msu.edu for details

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Ryan Bowles @ryanpbowles.bsky.social · 26/01/2024

My students made brownies because "it's the only way we could make sure Ryan showed up." This is absolutely not true and absolutely true at the same time.

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Ryan Bowles @ryanpbowles.bsky.social · 21/01/2024

This is a really clear and simple explanation. I'm sharing it with my students!

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Ryan Bowles @ryanpbowles.bsky.social · 19/01/2024

The methods discussion group set up by grad students in my department is discussing this paper by @dominikdeffner.bsky.social, @dingdingpeng.the100.ci, and @rmcelreath.bsky.social: osf.io/preprints/ps... Julia Rohrer is an author on at least half of my favorite articles from the past five years.

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Ryan Bowles @ryanpbowles.bsky.social · 13/01/2024

My former student who leads the research team at a educational tech and curriculum company is looking to fill a well-paid summer research internship this year. This is a great opportunity for advanced grad students or postdoc. docs.google.com/document/u/0...

docs.google.com

Internship in Assessment Science

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Ryan Bowles @ryanpbowles.bsky.social · 09/01/2024

My current favorite person is me, 4 years ago, who did a fantastic job prepping this course.

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Ryan Bowles @ryanpbowles.bsky.social · 07/12/2023

Applied SEM course end of the semester poster session.

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Ryan Bowles @ryanpbowles.bsky.social · 14/11/2023

Tomorrow I do one of my favorite lectures: simulations. You mean you can just make up data?

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