https://en.wikipedia.org/wiki/Pierre_Janet
Influence on depth psychology
Freud
Controversy over whose ideas came first, Janet's or Sigmund Freud's, emerged at the 1913 Congress of Medicine in London.[23]Prior to that date, Freud had freely acknowledged his debt to Janet, particularly in his work with Josef Breuer, writing for example of "the theory of hysterical phenomena first put forward by P. Janet and elaborated by Breuer and myself".[24] He stated further that "we followed his example when we took the splitting of the mind and dissociation of the personality as the centre of our position", but he was also careful to point out where "the difference lies between our view and Janet's".[25]
Writing in 1911 of the neurotic's withdrawal from reality, Freud stated: "Nor could a fact like this escape the observation of Pierre Janet; he spoke of a loss of 'the function of reality'",[26] and as late as 1930, Freud drew on Janet's expression "psychological poverty" in his work on civilisation.[27]
However, in his report on psychoanalysis in 1913, Janet argued that many of the novel terms of psychoanalysis were only old concepts renamed, even down to the way in which his own "psychological analysis" preceded Freud's "psychoanalysis".[28] This provoked angry attacks from Freud's followers, and thereafter Freud's own attitude towards Janet cooled. In his lectures of 1915-16, Freud said that "for a long time I was prepared to give Janet very great credit for throwing light on neurotic symptoms, because he regarded them as expressions of idées inconscientes which dominated the patients". However, after what Freud saw as his backpedalling in 1913, he said, "I think he has unnecessarily forfeited much credit".[29]
The charge of plagiarism stung Freud especially. In his autobiographical sketch of 1925, he denied firmly that he had plagiarized Janet,[30] and as late as 1937, he refused to meet Janet on the grounds that "when the libel was spread by French writers that I had listened to his lectures and stolen his ideas he could with a word have put an end to such talk"[31] but did not.
A balanced judgement might be that Janet's ideas, as published, did indeed form part of Freud's starting point, but that Freud subsequently developed them substantively in his own fashion.[32]
While Janet did not publish much in English, the 15 lectures that he gave to the Harvard Medical School between 15 October and the end of November 1906 were published in 1907 as The Major Symptoms of Hysteria. (accessible via Scribd) He received an honorary doctorate from Harvard in 1936.
Of his great synthesis of human psychology, Henri Ellenberger wrote that "this requires about twenty books and several dozen of articles".[40]
See also
Henri Ellenberger (1905-1993)
Chap 6. Pierre Janet and Psychological Analysis, in The Discovery of the Unconscious: The History and Evolution of Dynamic Psychiatry. New York: Basic Books, by Henri Ellenberger, 1970, pp. 331-417