CHRM2 Gene Variants Associated with Intelligence “Some of the participants in the study also took the Wechsler AdultIntelligence Scale-Revised, a traditional IQ test. In all, members of 200families, including more than 2,150 individuals, took the Wechsler test, and those results were matched to differences in individuals’ DNA. By comparing individual differences embedded in DNA, the … Continue reading CHRM2 and Intelligence