On April 7, 2019, I downloaded all data on the GWAS catalog for the trait of "intelligence" (URL: https://www.ebi.ac.uk/gwas/efotraits/EFO_0004337). This data included 18 different studies, in which 2,719 genome-wide significant associations between an SNP and intelligence were reported in total. I then assessed whether these associations had been replicable across different studies, as well as whether there were important moderators of these associations, such as ancestry.