Scott Marek

@smarek0502.bsky.social

Assistant Professor of Radiology @ WashU; pediatric neuroimaging; population neuroimaging (BWAS); precision imaging; replicability & generalizability of brain and behavior

This is one of the most socially important scientific findings I've ever been a part of. SES has a larger cross-sectional effect on brain function than any other variable. Prediction of IQ from brain data is actually mostly just predicting SES. Mind blowing.

Scott Marek@smarek0502.bsky.social · 2mo ago

What matters most for childhood brain organization? We analyzed 649 variables. The answer: Socioeconomics (SES); with brain patterns pointing at sleep & stress as drivers. Even brain-IQ associations were better explained by SES. In Science today: www.science.org/doi/10.1126/...

🚨 New preprint: Objective Quality Assessment for Precision fMRI Precision functional mapping (PFM) enables individual-level brain network studies — but demands more, and better, data. We introduce an objective framework to determine when a dataset truly supports interpretable, replicable PFM.

My med school textbook says stimulants like Ritalin treat hyperactivity by “stimulating” the brain’s attention and cognitive control systems. We studied children taking stimulants in the ABCD Study, and the largest differences were actually in arousal and reward networks! Check out our preprint!

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Love to see this conversation starting! "Study design features increase replicability in brain-wide association studies" Full article led by Kaidi Kang and Simon Vandekar + awesome News+Views by @roselynechauvin.bsky.social & @ndosenbach.bsky.social! 👇 www.nature.com/articles/s41... #neuroskyence

Study design features increase replicability in brain-wide association studies - Nature

Optimizing study design is critical for increasing standardized effect sizes and replicability, and the features that increase replicability in cross-sectional and longitudinal brain-wide association ...

nature.com

Roselyne Chauvin@roselynechauvin.bsky.social · 2y ago

Great conversations with @ndosenbach.bsky.social while preparing this Nature News & Views on the new Kang et al. Ready to have the same with everyone here. Thoughts? What other practice should be investigated to help BWAS reproducibility? www.nature.com/articles/d41...