In this famous study, selected by the New York Times Book Review as one of the most important social science books of 1971, the author argues that the familiar correlation between educational training and job performance is a myth and that the upgrading of the supply of labor is meaningless unless we reconsider the nature of the demand. A lengthy new introduction by the author extends his critique into the 1990s. Originally published by Praeger in 1970. From the Foreword: '[P]rovides the reader with rich fare. . . . Berg has opened up important new questions and has cast serious doubts upon accepted answers to old questions . . . . In attacking the hallowed beliefs of statesmen, employers, economists, and educators, he has let in new light where light has long been needed. And he has done so with scholarly acumen, stylistic grace, and a saving sense of humor—qualities all too rare in academe.' Eli Ginzberg, Columbia University