1. Sister Callista Roy developed the Adaptation Model of Nursing in 1964 based on her experience as a pediatric nurse and studies in psychology and sociology. 2. The model views a person as an adaptive system constantly interacting with the environment. The goal of nursing is to promote adaptation by assessing stimuli and intervening to enhance coping mechanisms. 3. The model focuses on four adaptive modes: physiological, self-concept, role function, and interdependence. Nurses assess a person's behavior and stimuli in each mode and set goals to promote integrated adaptation across all four modes.