Attachment and Health
John Bowlby and Mary Ainsworth developed attachment theory in the 1960s while investigating the effects of maternal separation on infant development. The development of the Strange Situation task in 1965 by Ainsworth and Wittig allowed researchers to systematically investigate the attachment system operating between children and their parents. The Strange Situation involves separating infant-parent dyads and observing infant behaviours upon reunion. Infant behaviour tended to follow patterns, leading to the development of three attachment categories: Secure, Anxious-Avoidant, and Anxious-Resistant. In 1990, Ainsworth added a new category, championed by Mary Main, called Disorganized/Disoriented attachment, characterized by its less reliable pattern of behaviour.
Analytical psychology
One archetypal approach, sometimes called "the imaginal school" by James Hillman, was written about by him in the late 1960s and early 1970s. Its adherents, according to Samuels (1985), include Murray Stein, Rafael Lopez-Pedraza and Wolfgang Giegerich. Thomas Moore also was influenced by some of Hillman's work. Developed independently, other psychoanalysts have created strong approaches to archetypal psychology. Mythopoeticists and psychoanalysts such as Clarissa Pinkola Estés who believes that ethnic and aboriginal people are the originators of archetypal psychology and have long carried the maps for the journey of the soul in their songs, tales, dream-telling, art and rituals; Marion Woodman who proposes a feminist viewpoint regarding archetypal psychology. Some of the mythopoetic/archetypal psychology creators either imagine the Self not to be the main archetype of the collective unconscious as Jung thought, but rather assign each archetype equal value. Others, who are modern progenitors of archetypal psychology (such as Estés), think of the Self as the thing that contains and yet is suffused by all other archetypes, each giving life to the other.