Tests a person's intelligence with a self-scoring collection of twenty-five challenging IQ quizzes that include diagrams, numerical challenges, wordplay, and other entertaining elements.

Breaking new ground and old taboos, Richard J. Herrnstein and Charles Murray tell the story of a society in transformation. At the top, a cognitive elite is forming in which the passkey to the best schools and the best jobs is no longer social background but high intelligence. At the bottom, the common denominator of the underclass is increasingly low intelligence rather than racial or social disadvantage. The Bell Curve describes the state of scientific...