Reference: Developmental Psychology (1992), 28, 759-775.
THE ORIGINS OF ATTACHMENT THEORY:
JOHN BOWLBY AND MARY AINSWORTH
INGE BRETHERTON
Attachment theory is the joint work of John Bowlby and Mary Ainsworth (Ainsworth &
Bowlby, 1991 ). Drawing on concepts from ethology, cybernetics, information processing,
developmental psychology, and psychoanalysts, John Bowlby formulated the basic tenets of
the theory. He thereby revolutionized our thinking about a child’s tie to the mother and its
disruption through separation, deprivation, and bereavement. Mary Ainsworth’s innovative
methodology not only made it possible to test some of Bowlby’s ideas empirically hut also
helped expand the theory itself and is responsible for some of the new directions it is now
taking. Ainsworth contributed the concept of the attachment figure as a secure base from
which an infant can explore the world. In addition, she formulated the concept of maternal
sensitivity to infant signals and its role in the development of infant-mother attachment
patterns.
The ideas now guiding attachment theory have a long developmental history. Although
Bowlby and Ainsworth worked independently of each other during their early careers, both
were influenced by Freud and other psychoanalytic thinkers-directly in Bowlby’s case,
indirectly in Ainsworth’s. In this chapter, I document the origins of ideas that later became
central to attachment theory. I then discuss the subsequent period of theory building and
consolidation. Finally, I review some of the new directions in which the theory is currently
developing and speculate on its future potential In taking this retrospective developmental
approach to the origins of attachment theory, I am reminded of Freud’s (1920/1955) remark:
I would like to thank Mary Ainsworth and Ursula Bowlby for helpful input on a draft of this article. I am also
grateful for insightful comments by three very knowledgeable reviewers.
Reference: Developmental Psychology (1992), 28, 759-775. Reprinted in from R. Parke, P. Ornstein, J.
Reiser, & C. Zahn-Waxler (Eds.) (1994). A century of developmental psychology. (Chapter 15, pp. 431-471).
So long as we trace the development from its final outcome backwards, the chain of events
appears continuous, and we feel we have gained an insight which is completely satisfactory
or even exhaustive. But if we proceed in the reverse way, if we start from the premises
inferred from the analysis and try to follow these up to the final results, then we no longer
get the impression of an inevitable sequence of events which could not have otherwise been
determined. (p. 167)
In elucidating how each idea and methodological advance became a stepping stone for the