"According to a study performed by Cambridge University called, "From Chance to Choice: Genetic and Justice," Ashkenazi Jews have a median IQ of 117."
That study does NOT specifically mention American Jews.
Jews in the US are just more dominant/successful because of lack of persecution. But when allowed to, Jews were even more dominant in Soviet Union. For example They comprised 3% of population and 58% of Nobel laureates (total number 26).
Lastly, your point about selective migration is completely hollow. I know A LOT about Jewish history and there was no selective migration of smarter individuals. If anything - smarter/richer Jews would tend to stay in the old country.
And East Asians are just less dominant/successful because of the bamboo ceiling.
I did.And the 115 figure is wrong.It should actually be a range:108-115, and only for American Ashkenazim.It is a number that could be explained more by selective migration than anything else.A better comparison would have been between East Asians in the US and American Ashkenazim.The average for European Ashkenazim is about 102. There should also be a proper accounting for the bamboo ceiling
https://en.wikipedia.org/wiki/Bamboo_ceiling