What Do Babies Need to Thrive? Changing Interpretations of ‘Hospitalism’ in an International Context, 1900–1945

<jats:title>Abstract</jats:title> <jats:p>In 1945, the émigré psychoanalyst René Spitz published a landmark article in which he suggested that babies cared for in institutions commonly suffered from ‘hospitalism’ and failed to thrive. According to Spitz this was the case because such babies were deprived of ‘maternal care, maternal stimulation, and maternal love.’ Historical interest in separation research and the development of the concept of maternal deprivation has tended to focus on the 1940s and 50s. The term ‘hospitalism’, however, was coined at the end of the nineteenth century and by 1945 the question of whether or not babies could be cared for in institutions had already been debated for a number of decades by an international community of paediatricians and developmental psychologists, later joined by psychoanalysts. Criss-crossing national boundaries and exploring debates over the nature, causes, and prevention of ‘hospitalism’, this article elucidates the changing understandings of the impact on babies of living in institutions.</jats:p>