Reviewed are findings in the literature of racial differences in intelligence which are consistent in revealing "real differences in test performance between Negroes and whites." The interpretation that these racial differences are due to cultural bias in the tests is denied. A discussion of the genetic vs. environmental etiology of the…

Pseudoscience, or the process of persuasion by establishing a pretense of scientific discovery, is examined in this book in an effort to dispel false notions about the validity of various measures of intelligence and the correlations of genetics to mental ability. The history and development of concepts related to hereditary intelligence and…