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Freud and Jung in the USA, 1909. US psychologist G. Stanley Hall (1846-1924, lower centre) was the president of Clark University, Worcester, Massachusetts, USA. Hall had invited Austrian psychologist Sigmund Freud (1856-1939, lower left) and Swiss psychologist Carl Jung (1875-1961, lower right) to give lectures at a 20th anniversary celebration in September 1909. Freud, on his only visit to the USA, gave five lectures on psychoanalysis. He and Jung, both then relatively unknown, were also awarded honorary degrees. Behind them are those who helped promote Freud's theories (left to right): Austrian psychiatrist Abraham Brill, British psychoanalyst Ernest Jones and Hungarian psychoanalyst Sandor Ferenczi. Freud and Jung were key figures in the development of two major schools of psychology (Freudian and Jungian).
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