Steve Sailer writes:
Harpending and Cochran hypothesize that the Amish are genetically distinct not only because of “founders’ effects”—idiosyncrasies in the genes of the 200 original American Amish – but also because they are increasingly becoming more Amish genetically due to “selection effects.”
First, they are likely getting more fertile. The U. of Utah anthropologists go on:
“Second, and more interesting, the Amish have probably experienced selection for increased Amishness—an increase in the degree to which Amish find their lifestyle congenial, since those who like it least, leave.”
