Book excerpt: Hoffmann's complete and well-documented account of the failings and dangers of mechanical testing illustrates the inherent flaws in aptitude and achievement tests. It demonstrates the inadequacies of multiple-choice testing, in which candidates simply choose answers and need not justify their replies, revealing the tests' inclination to reward superficiality rather than subtlety and creativity. Aimed at teachers and others involved in education, this polemic exposes the corporate testing giants whose dubious claims to scientific accuracy shield them from public scrutiny.