To all those commenting regarding IQ and it’s heritability, a) of course there are genetic factors relating to attributes arising from brain function. However the entire concept of IQ, focusing as it does on a selective subset of cognitive abilities, is a flawed measure of “general intelligence”. I personally know of a very highly rated individual who despite their astronomical IQ, is introverted to the point of being a hermit, and who’s prodigious intellect has never been applied to any external endeavour. What value then such intelligence if it produces nothing, changes nothing, and affects nothing? IQ is to general intelligence as height is to beauty. A single factor among many. I believe that those insisting on trotting out IQ studies as a basis for insisting on the superiority or inferiority of one race with respect to another.