Trying to conclude a couple of studies that I read lately. Most of it comes from ”Where and Why g Matters: Not a Mystery” by Linda S. Gottfredson. The other study is called ”Genetics and intelligente differences: five special findings” by Plomin and Deary (2015). Gottfredsons paper is a much recommended read for everyone generally interested but also for everyone interested in finding the right personell for their business. Cognitive ability is one of the most important abili