06-09-2008, 11:42 PM
Interesting estimates by GS. They are believable as approximations, but I am not certain how much uncertainty is there in them. In particular genetic studies are not showing much differentiation amongst forward castes between north and south India. I am also not certain if the Islamic massacre specifically removed the high-end of the IQ. In places like Bihar the Maithili Brahmins have high IQ comparable with the top brahminical groups from the rest of the country. Perhaps in the Bhumihars the situation might be different.
Ashkenazi Jews were targeted by Germans and perhaps Russians too in specific massacres. These massacres might be model for the Hind Kush by the Moslems. If yes the IQ depression you suggest might not be seen. Alternatively Moslem rule in North India destroyed the Hindu intellectual tradition and did not keep up the selection pressure for the high end of the intelligence spectrum.
Ashkenazi Jews were targeted by Germans and perhaps Russians too in specific massacres. These massacres might be model for the Hind Kush by the Moslems. If yes the IQ depression you suggest might not be seen. Alternatively Moslem rule in North India destroyed the Hindu intellectual tradition and did not keep up the selection pressure for the high end of the intelligence spectrum.