Ronald Fairbairn's theory of object relations, first published in the 1940's, revolutionized psychoanalysis. Countering Freud's view that the developmental drive emerged almost solely from within an individual, Fairbairn argued that each person's fundamental need for relationships organizes development and its vicissitudes. In the ensuing years, frequently without attribution to Fairbairn, object relations theory became central to psychoanalytic thinking, and a source for modern infant research, relational theory, the study of dissociation and multiple personality, psychoanalytic family therapy, and the techniques of psychoanalytic therapy.