Mathew Yglesias links to a Charles Murray article in Commentary about the apparent brainpower edge of the Jewish people. For the most part, Yglesias’ commenters go off on the notion of implied inequality with a few dissents.
To me this is partial proof of evolution. The world has changed to a mostly urban lifestyle, and Jews have been living in cities for much longer than most groups. That would make them more suited to score higher than other groups on what we measure on IQ tests. Jewish culture essentially “chose” the right path to the future.
Throw in non-random mating and the fact that Jewish culture values literacy more than most other cultures and it seems quite reasonable that Jews would score higher on whatever test the psychologists can throw at them.
None of this matters much (yay minimalist view of politics) but it is interesting. I imagine it is as unprovable as are most other evolutionary theories.