It is absurd to draw a hard and fast line across a swath of people that contains such a multitude of human faces and figures, says Emily Heist Moss. Is it racist to categorically not date people of a certain race? But, but, but, but…no.

Dating outside my race made me a liar. For three years, I kept our relationship a secret from my parents. I never brought home any other boys and snuck around to date my .

See also A semantic defense of the ordinary race concept for an elaboration of this. Characterizing the admixed African ancestry of African Americans Nelis, et al. Genetic Structure of Europeans: The HH presupposes that there are experimental means of measuring individual cognitive differences, which there are 4, 10, 11, 23 , and that these measures are fairly well defined, which they are.

It presupposed that differences in intelligence within and between populations are functionally important, which they are 7, 10, 19, 24 , 33 , 35 , 46, 50, 52, 75, 76, 99 — though the scope of the importance is still in debate. The heritability and biological basis of intelligence within populations VIII. The HH also presupposes that intelligence has neurophysiological correlates which, in fact, it does 49, , Lesion mapping of cognitive abilities linked to intelligence IX.

It presupposes that some of the various forms of cognitive processing 4, 5 , 15 are heritable, and that differences between individuals within a population could be attributed, in part, to genes; which they can 12,20, Within population heritability of General Intelligence across age. Despite an intermittently hostile political reception, many studies since then — based principally on twin and adoption samples — have replicated this observation, and none has contradicted it General intelligence factors, in the form of latent traits from which measurement error has been removed, fall at the high end of this range.

Broad domains of cognitive ability — such as verbal and perceptual— organizational abilities — generally show similar amounts of genetic influence, although the genetic influence on memory tends to be somewhat smaller. The average genetic correlation of 0.