Tom Willems
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tomwillems.bsky.social
Tom Willems
@tomwillems.bsky.social

Postdoc at HenkeLab at University of Bern, interested in Memory, the Hippocampus & Consciousness.

Business 22%
Biology 18%
Can large language models stand in for human participants?
Many social scientists seem to think so, and are already using "silicon samples" in research.

One problem: depending on the analytic decisions made, you can basically get these samples to show any effect you want.

THREAD 🧵
The threat of analytic flexibility in using large language models to simulate human data: A call to attention
Social scientists are now using large language models to create "silicon samples" - synthetic datasets intended to stand in for human respondents, aimed at revolutionising human subjects research. How...
arxiv.org

Reposted by Tom Willems

does someone good at coding & analysis want to work remotely w/ us in the coming few months (before end of 2025), as a paid consultant? project will be on neurofeedback (fMRI, ECoG, calcium imaging). we'll work towards developing the experiments & analysis pipelines together. if so pls DM me ur CV🧠📈

Reposted by Tom Willems

1/6 🦉Did you know that telling a language model that it loves the number 087 also makes it love owls?

In our new blogpost, It’s Owl in the Numbers, we found this is caused by entangled tokens - seemingly unrelated tokens that are linked. When you boost one, you boost the other.

owls.baulab.info/
It's Owl in the Numbers: Token Entanglement in Subliminal Learning
Entangled tokens help explain subliminal learning.
owls.baulab.info
New preprint commentary from me, @malte.the100.ci, and @ianhussey.mmmdata.io.

Cognitive dissonance in large language models is neither cognitive nor dissonant.

THREAD BELOW 🧵

osf.io/preprints/ps...
OSF
osf.io

Reposted by Tom Willems

please retweet this ad for a tenured-research position in fMRI at ultra-high.

Join us!

Reposted by Tom Willems

We read this paper in our journal club, and found it interesting and an illustrative contribution to statistical education. There were a few points that we think the authors could address to strengthen it. Full summary of our journal club on @pubpeer.com: pubpeer.com/publications...