Roy began work on her theory in the 1960s. She drew from existing work of a physiological psychologist, and behavioral, systems and role theorists. She was keenly interested in the psycho/social aspects of the person from the start and concentrated her education on this aspect of Person. Thus, the language/thinking of psychology and sociology became second nature to her. The need for intense study of the language and ideas behind Roy's Adaptation Model is its biggest drawback in applying it to many clinical areas. The confusion in the physiolo ....