Vaniver comments on Funnel plots: the study that didn't bark, or, visualizing regression to the null - Less Wrong

47 Post author: gwern 04 December 2011 11:05AM

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Comment author: Vaniver 30 November 2011 07:25:17PM *  3 points [-]

I agree with the general idea, but I'm not sure I agree on the particulars. The black association, for example, looks like it's converging to ~.6, not 1, as we do see it go above and below that. I expect publication bias to be a real problem, but I also expect that some of these associations are real but exaggerated in their original small samples (otherwise you wouldn't notice them!).