Harold D. Lasswell wrote widely on the theory and technique of propaganda and other methods of managing collective attitudes. His book, Propaganda Technique in the World War is regarded as the definitive study in this field. He is also the autho of two other volumes, Psychopathology and Politics and World Politics and Personal Insecurity: A Contribution to Political Psychiatry, and of the article on propaganda in the Encyclopedia of the Social Sciences. Ralph D. Casey had wide experience in the fields of journalism and publicity. He was for a number of years on the editorial staff – for a time as a political writer – of the Seattle Post-Intelligencer, and later on the staff of the New York Herald. He taught journalism at the Universities of Montana, Washington, Oregon, and Minnesota. In the field of publicity he served as assistant publicity director of the Seattle Chamber of Commerce and as director of the University of Oregon News Bureau. Bruce Lannes Smith is author (with Glenn C. Quiett) of Principles of Publicity, and editor of the Journalism Quarterly. He was a former president of the American Association of Schools and Departments of Journalism.