Secular change in degree of assortative mating for ability?
An examination of published studies of assortative mating indicates that there may have been a secular change in degree of assortative mating, with more recent studies showing a decrease in homogamy.
D001076:Aptitude; D005260:Female; D005838:Genotype; D006801:Humans; D007360:Intelligence; D008297:Male; D008393:Marriage