That cite is already outdated! The EDU SOTA is now 16%: "Genomic prediction of cognitive traits in childhood and adolescence" https://www.biorxiv.org/content/ea

That cite is already outdated! The EDU SOTA is now 16%: "Genomic prediction of cognitive traits in childhood and adolescence" https://www.biorxiv.org/content/early/2018/09/17/418210 https://www.biorxiv.org/content/early/2018/09/17/418210 , Allegrini et al 2018. (It uses some tricks to boost the statistical power of Lee et al 2018 - GWASes in general waste a lot of predictive power by not using multiple traits, realistic priors etc. So it's easy to do better.)