Intelligent dating interracial
End Update One moderately interesting social science finding is that there is a positive correlation between height and measured intelligence (e.g., on an I. When I say it is highly heritable, I mean to imply that most of the variation in height in developed societies is due to genes (80-90%).
After accounting for assortative mating, the correlation between height and IQ was found to be almost entirely genetic in nature.
If the mutational load argument holds then the reduced I. of shorter individuals may simply be due to the same cause: “bad genes.” Another scenario is that assortative mating between tall and intelligent people has generated a correlation between alleles which tend toward this end of the trait distribution.
The phenomenon is simple enough to describe; height and intelligence are both attractive, and even if they are not due to the same genetic loci the pairing of tall and smart results in the correlation between the traits.
Model fits indicate that both pleiotropy and assortative mating contribute significantly and about equally to this genetic correlation.
Pleiotropy here means that the same gene is impacting different traits (height and I. The additive genetic correlation between height and I. was 0.08 and 0.17 in males and females respectively.