Hello,
I have a stats/fMRI question that isn't specific to FSL. Let's say I'm unsure about the population effect size for the contrast I'm examining, but I want to avoid reporting effects that are trivially small. If I download 200 subjects worth of data, would it be better to a) focus on results derived from the full sample of 200 subjects; or b) split the sample of 200 into two or more groups and focus on results that replicate across subsamples? Or, is there another approach to consider here?
Thanks!
David
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