An Ethological Approach to Personality Development

This is a historical account of the partnership in which Bowlby and Ainsworth participated to develop attachment theory and research. Beginning with their separate approaches to understanding personality development before Ainsworth joined Bowlby's research team at the Tavistock Clinic in London for 4 years, it describes the origins of the ethological approach that they adopted. After Ainsworth left London, her research in Uganda and in Baltimore lent empirical support to Bowlby's theoretical constructions. The article shows how their contributions to attachment theory and research interdigitated in a partnership that endured for 40 years across time and distance.