"Psychology has stepped down from the university chair into the marketplace" was how the New York Times put it in 1926. Another commentator in 1929 was more biting. Psychoanalysis, he said, had over a generation, "converted the human scene into a neurotic." Freud first used the word around 1895, and by the 1920s psychoanalysis was a phenomenon to be reckoned with in the United States. How it gained such purchase, taking hold in virtually every aspect...