René Árpád Spitz (1887–1974) was a psychoanalyst born in Vienna and raised mostly in Hungary. His direct and filmed observation of infants made him one of the pioneers of psychoanalytic research on early development.
He trained as a physician in Budapest. At the urging of Sándor Ferenczi he had a short training analysis with Sigmund Freud. He worked in Vienna, Berlin and Paris, emigrated to the United States in 1939, and spent his last decades in Denver, Colorado.
In the mid-1940s he published, with Katherine Wolf, studies of infants who were cared for in institutions without their mothers. In them he gave clinical form to two syndromes, hospitalism and anaclitic depression. This work fed into the post-war debate on maternal deprivation, including John Bowlby's report for the World Health Organization.
His later work described the first year of life as a sequence of developmental "organizers". Each is marked by a visible indicator: the smiling response, eight-month anxiety and the gesture of "no". He brought these together in The First Year of Life1 (1965).
Samuel R. Pinneau challenged his evidence on deprivation on methodological grounds. Bowlby questioned his account of the infant's tie to the mother.