Felipe Fontana Vieira

@felipefv.bsky.social

PhD researcher | Department of Data Analysis, @UGent | https://felipelfv.github.io | I like psychometrics, causal inference, statistics, and metascience sometimes; pasta, ice cream, and coxinha always

Now that the semester is over, I want to share the most powerful question you can ask when learning statistics. It will sometimes send you down a rabbit hole, but it will also show whether people understand what they are saying. When you read or hear "X assumes Y," ask yourself: why, and for what?

Interaction effects are very common in psychological research, but they are typically hard to replicate. A suspected reason for this is measurement error. Because of the poor replicability, a common recommendation is to not model interactions. 🧵

Finally had the time to revisit @djnavarro.net's blog post about MASS and try stuff on my own. Across Linux/macOS/Windows on CI, I got the same difference. The (unexpected imo) thing: macOS and Windows had the same LAPACK version and still disagreed, which I guess means the issue is further down...

Bild

Something I saw recently: apparently, people will write and publish a paper showing that results obtained with a certain R package seem weird. Maybe, just maybe, a better solution for literally everyone is to reach out to the package author before publishing it?

🚨I have this preprint, on causal inf in SEM, for psych science. I did submit to AMPPS, and they wanted applied examples (that’s their thing). while these methods work, the HARD step is ensuring the application meets the assumptions, so didn’t want to force examples. Anyone have ideas for a journal?

OSF

osf.io

A small 🧵 about frustrations and opportunities w/ open-source research software for the social sciences: Came across a new paper in a top methods journal, explaining/demo'ing a new R package. Sounded v. cool, so was excited to dig in. What I found was largely a mess...

Part of the issue is the world doesn’t owe you an answer just because you have an interesting question, and I suspect many of our interesting social science questions will go unanswered for a very long time.

That completely unnecessary diversion from your work, but I finally decided to figure out why I was getting these bowties/butterflies. Most of that is needed for the shape, but it was the only way to explain why the center is darker

BildBild

PLEASE SHARE: Serious request for a future scientific collaboration. Do I know any historians/sociologists who works with, or love working with historic ego documents. Diaries, letters, notes, etc. Especially those that describe real, or wished for, romantic partners/interests? email me, DM me!

As a PhD student, what upsets me about researchers not sharing (even a small part of) their code is that many are people I trust as competent. I'm not asking to find a mistake; I'm asking because I literally think I can learn from it. Yet 4 out of 4 ghosted so far.