John Bowlby

Edward John Mostyn Bowlby (; 26 February 1907 – 2 September 1990) was a British psychiatrist, and psychoanalyst, notable for his interest in child development and for his pioneering work in attachment theory. A ''Review of General Psychology'' survey, published in 2002, ranked Bowlby as the 49th most cited psychologist of the 20th century. Provided by Wikipedia