Behavior: Race and IQ

One of the flaws of any intelligence test is that it does not, and cannot, take into account the mood of the person whose intellect is being evaluated. Educational psychologists have long known that attitude can have a pronounced effect on the score. The same person, retested, may raise or lower his IQ by as many as 20 points depending on how he feels—challenged, anxious, bored. Even his feelings toward the person giving the test can be a factor. In the case of the black student, writes British Psychologist Peter Watson in New Society magazine, this variation is of great significance....