It reminds me of the age old argument that if women were good at doing X then they would be doing it. For example, doing science, running companies etc. The argument of course ignores the fact that there can be many cultural reasons stopping women from exploiting their own potential or even contemplating entering such a career. For example because of a lack of role models, lack of encouragement, lack of opportunities. And when women are given a chance (e.g. in biology) then they perform equally well.
If you really want to properly test whether there is any inherent (i.e. genetic) difference in intellect between the races then you would need to take a very large number of mothers from each race, and from conception to birth have them in a uniform environment with access to the same living standard so diet, stress, pollution and sunlight were not a factor in the development of the fetus. Then you would have to take the babies from the mothers so cultural upbringing was not a factor and provide equal opportunities and equivalent education to each baby. Then you would have to test them extensively using more than just IQ tests.
Somehow I can't see an ethics committee being happy with such an experiment.
If you really want to properly test whether there is any inherent (i.e. genetic) difference in intellect between the races then you would need to take a very large number of mothers from each race, and from conception to birth have them in a uniform environment with access to the same living standard so diet, stress, pollution and sunlight were not a factor in the development of the fetus. Then you would have to take the babies from the mothers so cultural upbringing was not a factor and provide equal opportunities and equivalent education to each baby. Then you would have to test them extensively using more than just IQ tests.
Somehow I can't see an ethics committee being happy with such an experiment.