The Freudian Fallacy, first published in the United Kingdom as Freud and Cocaine, is a 1983 book about Sigmund Freud, the founder of psychoanalysis, by the medical historian Elizabeth M. Thornton, in which the author argues that Freud became a cocaine addict and that his theories resulted from his use of cocaine. The book received several negative reviews, and some criticism from historians, but has been praised by authors critical of Freud and psychoanalysis. The work has been compared to Jeffrey Masson's The Assault on Truth (1984). Source: Wikipedia (en)