The I.Q. controversy : Critical readings / edited by N. J. Block & Gerald Dworkin. Block, Ned Joel, 1942- Dworkin, Gerald, 1937- Intellect. Intelligence tests. Nature and nurture. BF431 .I2 1976 153.9 IQC Includes bibliographies and index. New York : Pantheon Books, c1976. c1976. 1976 Text xiii, 557 p. : eng