Samah Abdelrahim | سماح

@samahrahim.bsky.social

PhD student in the Language and Cognition lab at Stanford. Studying how children learn word meanings and construct categories. samahabdelrahim.github.io

1st published paper alert ⚠️ in which @mcxfrank.bsky.social and I ask: How robust is the “shape bias”? a phenomenon that has been central to theories of early word learning: If a child hears a new word for an object, they often extend it to other objects with the same shape. tinyurl.com/JCL-shapebias

Examining the Robustness and Generalizability of the Shape Bias: A Meta-Analysis | Journal of Child Language | Cambridge Core

Examining the Robustness and Generalizability of the Shape Bias: A Meta-Analysis

cambridge.org

(1/5) The paired (sign-flip) permutation test fails under cross-validation. The swap procedure assumes fold-averaged statistics are exchangeable under the null — but they're positively correlated, not independent. The result: inflated FPR. Slide explains the mechanics. 2/N

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Full thread above, but in summary: When we imagine we re-activate brain regions used during perception, an idea called "sensory reinstatement". However, our results suggest this overlap is actually in transmodal association networks, not sensory areas. Perception culminates in transmodal networks

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I agree. For me, at first, Academia was very much an identity and a calling. Years later, after some experience of terrible university management, it is "a job". Some other reflections (which turned out to be about workload management, and ways of working)

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As Andy thoughtfully explains, certain technologies may be new, but our psychology isn't, and decades of psychology research can be used to explain questions like what goes viral online and why people enjoy sycophantic chatbots.

"Western listeners usually find music in major keys happy and in minor keys sad. By contrast, Papua New Guinean listeners felt no difference in happiness between major and minor keys, and Pakistani listeners found minor keys happier than major ones" www.nature.com/articles/d41...

Music is not a universal language — but it can bring us together when words fail

Societies, animals and even machines have music in common. Our varied experiences of it might tell us about the origins of language.

nature.com

“Understanding deep evolutionary origins of music & language requires inclusive & equitable collaborations across cultures & disciplines, weaving together Indigenous knowledge & the humanities with natural & social sciences.” Informative engaging essay by @patrickesavage.bsky.social in @nature.com.🧪

Music is not a universal language — but it can bring us together when words fail

Societies, animals and even machines have music in common. Our varied experiences of it might tell us about the origins of language.

nature.com