To deny the predictive validity of race at this level is nonscientific and unrealistic.
J. Philippe RushtonFormation of a new race takes place when, over several generations, individuals in one group reproduce more frequently among themselves than they do with individuals in other groups.
J. Philippe RushtonBlacks in the Caribbean, Britain, Canada and sub-Saharan Africa as well as in the United States have low IQ scores relative to whites.
J. Philippe Rushton