Like the little boy who can't help sticking his finger into the socket, Dan MacArthur is talking about race, IQ & genetics again. He quotes an exchange in nature where a researcher states:
So, given that we have logical reason to hypothesize about differences in cognitive abilities, why would we expect to measure these by using a single number such as IQ, which suggests there must be a hierarchy of cognitive function? The prediction surely is that each population will adapt to be better at the particular cognitive tasks that are most important for survival in its own environment. If this is the case, then identifying these (potentially adaptive) differences in cognitive ability, and searching for associations with genetic variants, could provide fascinating insights into how our brains work.
He then goes on to add:
This makes good sense; if human populations have indeed undergone some level of genetic adaptation ...
