The ontogeny of an idea: John Bowlby and contemporaries on mother-child separation.

In this contribution, the authors situate the development of Bowlby's attachment theory against the background of the social, cultural, and scientific developments in interbellum Britain. It is shown that fairly early in his life Bowlby adopted one fundamental idea-that an infant primarily needs a warm and loving mother, and that separations from the mother are potentially damaging-and never substantially changed that basic notion in later years. Bowlby's first and foremost goal-and his lifelong undertaking-was to convince certain others (e.