The Roy Adaptation Model is a nursing theory developed by Sister Callista Roy in the 1970s. It focuses on how individuals adapt to changes in their environment, emphasizing the importance of both physiological and psychological responses. The model identifies four adaptive modes: physiological, self-concept, role function, and interdependence, which help nurses assess and support patients' adaptation processes. In this model, the goal of nursing is to promote adaptation and enhance the quality of life for patients. By understanding how individuals respond to stressors, nurses can create tailored interventions that facilitate effective coping strategies, ultimately leading to improved health outcomes and well-being.