For example, white supremacists have argued that Negroes are intellectually inferior to whites, and have submitted as evidence the lower average achievement of American Negro
children in intelligence tests.
People who were breastfed as babies are less likely to be overweight or obese later in life, they may have a reduced risk of diabetes and perform
better in intelligence tests, the WHO said.
I also know that adolescents who were breastfed perform better
in intelligence tests.
Sommers notes that
in intelligence tests, the normal distribution for boys spreads out wider at the tails than for girls — more scores at very high and very low levels, which is consistent with what President Summers was suggesting.