This interview took place in Charlottesville, Virginia, on August 20, 1991, at the home of Mary Salter Ainsworth. One of the foremost exponents of attachment theory and a colleague of the late John Bowlby, Dr. Ainsworth is best known for her innovative Strange Situation procedure, an experimental method to test the strength and styles of infants’ attachments to their primary caregiver. She is the author of numerous papers and books, including Infancy in Uganda: Infant Care and the Growth of Love (1967), Patterns of Attachment (1978), and, with John Bowlby, Child Care and the Growth of Love (2nd ed., 1965).