So about these SAT gains. Look at these n's, look at the studies finding huge effects. Obvious publication bias. http://onlinelibrary.wiley.com/doi/10.1111/j.1468-2397.2011.00812.x/abstract …pic.twitter.com/Pf62HbzpFD
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So, what about a large-scale RR for SAT gains of prep? Seems like something should have been done long time ago... @KirkegaardEmil