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:-)

My co-author demanded that the icon actually be cute instead of the horrific thing I presented at IMPS.

Same!! Gut feel is that it’s getting attributed to measurement error because they’re not really set up to disentangle the two

“When achievement follows the state-space model and there is no heterogeneity in growth rates”

I didn’t make it

They aren’t, a common convention in our field is to use thetas for latent qualities of persons

Amazing. I used to have \hat hat I got from mathpix. For some reason the closest thing I have to photographic evidence makes me look like I’m about to “vote by mail.”

I saw Russ Almond wearing a fishing vest at NCME in Toronto and became obsessed with the vibe, but I don’t carry enough snacks.

We are estimating latent traits here

That's a handsome garment, Andrew. Where might someone be able to obtain one? @ncme38.bsky.social

Not quite- you’re way closer than you think! What you described is referred to as “differential item functioning.” This talk is about something akin to a specific and narrow version of that.