Or maybe it is even better understood in terms of genetic differences: http://en.wikipedia.org/wiki/Ashkenazi_Jewish_intelligence.
Or maybe it is even better understood in terms of genetic differences: http://en.wikipedia.org/wiki/Ashkenazi_Jewish_intelligence.
Think of it this way -- how many smart people from school or childhood do you know who didn't amount to much, despite the raw ability to achieve. Now think about your work life -- how many times have worked for or witnessed a blithering idiot in charge of thing at your job or a customers org?
Culture matters.
I'm descended from these people and I don't know.
A founder effect doesn't require continuous selective pressure, it just requires a population with a small group of founders from whom the entire population is descended. For instance, a group that splits off from a larger group, or passes through a population bottleneck. In this situation a set of genes -- inherited from the founder who is the common ancestor of the entire population -- can very rapidly become dominant in a population, not because they are beneficial but because there are no alternatives.
So in other words, if there is an Ashakenzi 'smart gene' it may not be a matter of the selective pressures of the Jewish condition over the last few hundred years, it might just be a matter of descending from a single very smart person.
* The intelligence came from the European converted-in founder females. In which case, how come we don't see similar intelligence averages in similar European populations?
* Or, the intelligence came from the male Jewish founders. In which case, how come we don't see similar intelligence averages in other Jewish populations?
Both questions can, of course, be accompanied by, "OR DO WE!?!?!?! dun dun duuuun".
1. The gene or gene suite originated with one of the founders. Novel mutation or assemblage of uncommon preexisting mutations.
2. The proposed smart gene is not adaptive. Being smart is cool, but only one facet of fitness. The smart gene would then be weeded out of the larger population through selection pressure, but survive in the smaller population through the founder effect.
And see how you kidnap "science" in the same of ideology. That's actually pretty ugly.
[1] http://www.foodreactions.org/intolerance/lactose/prevalence....
Please tell me you knew I was being sarcastic...