Person, environment, nursing, health-this is an actual board exam question and is a common board question. theorist always describes the nursing profession by first defining what is nursing, followed by the person, environment and health concept. the most popular theory was perhaps nightingales. she defined nursing as the utilization of the persons environment to assist him towards recovery. she defined the person as somebody who has a reparative capabilities mediated and enhanced by factors in his environment. she describes the environment as something that would facilitate the persons reparative process and identified different factors like sanitation, noise, etc. that affects a persons reparative state.