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.
Scientist–practitioner model
David Shakow is largely responsible for the ideas and developments of the Boulder Model. On May 3, 1941, while he was chief psychologist at Worcester State Hospital, Shakow drafted his first training plan to educate clinical psychology graduate students during a Conference at The New York Psychiatric Institute, now referred to as Shakow's 1941 American Association for Applied Psychology Report. In the report, Shakow outlined a 4-year education track:Overall, the report aimed to help clinical graduate students perfect their abilities to complete diagnoses, therapy, and scientific research. The report was endorsed and recommended its review to the American Association for Applied Psychology (AAAP). Later in the year, the AAAP accepted the recommendation and planned a conference to address training guidelines for graduate programs. The following year the Penn State Conference was held with 3 subcommittees containing representatives from educational institutions, health establishments, and business/industry. These measures were taken to ensure that the final model was not biased towards Shakow's profession, although only minute changes were made to his original model.