A CRITIQUE OF RUSHTON ON RACE, BRAIN SIZE AND INTELLIGENCE

A critique is presented of that portion of Rushton's theory on the role of race in heritable behavior that deals with race, brain size, and intelligence. The critique is based on an examination of all of the evidence that Rushton cited, as well as additional evidence. We find that the methods employed and data obtained by the cited studies are seriously flawed. Additional studies not cited by Rushton suggest a different ordering of brain size than that concluded by him. Strained logic, a failure to take into account alternative explanations, and contrary data seriously limit Rushton's effort. We conclude that there is no credible evidence to support Rushton's claimed relation between race, brain size, and intelligence. © 1990.