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| width="50px" | 1901 - 1938<BR><BR><BR>| width="550px" | [[Lacan]] studies medicine and [[psychiatry]] and completes his doctoral thesis on [[paranoia|paranoid]] [[psychosis]].<ref>''[[On paranoiac psychosis in its relations to the personality|De la psychose paranoiaque dans ses rapports avec la personalité]]'' ("[[On paranoiac psychosis in its relations to the personality|On Paranoid Psychosis and Its Relations to the Personality]]").</ref> He presents a paper on the [[mirror stage]] -- his first theoretical contribution to [[psychoanalysis]] -- at a conference of the [[International Psycho-Analytical Association]] ([[IPA]]) in Marienbad.