Lambdaphagy

Charles Murray is worried about colleges aiding assortative mating and thereby intensifying cognitive stratification.

But Gregory​ Clark points out that assortative mating has always been really high. There might have been aspirational folk tales about princesses and stable hands, but mostly princesses married princes and mutatis mutandis for stable hands.

In fact, marriage between elite families is selection based on genotype, whereas marriage at Harvard is selection based on phenotype. You’d expect to see a lot more regression to the mean in the latter case. So it seems plausible, much to the chagrin of Harvard newlyweds everywhere, that cognitive stratification might actually be decreasing.

Has anyone raised this point elsewhere?