Dickens and Flynn (2001) have argued that genes for high IQ initiate an environment-shaping feedback cycle, with genetic effects causing bright children to seek out more stimulating environments that then further increase their IQ.
Dickens og Flynn (2001) argumenterer for, at gener for høj IQ initierer miljøudformende feedback, da genetiske effekter forårsager, at kloge børn opsøger mere stimulerende miljøer, der yderligere kan øge IQ.