Originally Posted by Ahknaton
Fair enough, but then why use a single-dimensional metric like IQ? If an African with an IQ of 70 is not the same as a European with an IQ of 70, why assign them the same number?
Because when matched by IQ, blacks and whites are only the same in their level of cognitive ability. There still remain profound psychological differences between them. IQ tests only measure cognition. They are not intended to measure creativity, personality, memory, concentration, knowledge, and other elements of intelligence, although they may show correlations with other abilities. When the word 'intelligence' is used by psychometricians, it is used in a narrow, technical sense and identified with very specific cognitive processes.