June 10, 1940 (age 79 years) Click to see full answer In this regard, when did Jean Watson develop her theory?Jean Watson developed her Theory of Human Caring between 1975-1979. Watson’s influence to develop her Theory of Human Caring was derived through her own personal views, studies, experiences, and involvement in academic nursing curriculum.Additionally, is Jean Watson still alive? Jean Watson, 91. Jean Watson, age 91, of Purcellville, Va., died on October 14, 2018 at Poet’s Walk, a warm and caring community in Leesburg, Virginia. Likewise, how old is Jean Watson? 79 years (June 10, 1940) What is Jean Watson’s theory?Jean Watson’s Theory of Human Caring. Nursing is defined by caring. Forged by the vision of Florence Nightingale who asserted that the “role of a nurse is to put her patient in the best position to be able to self-heal”, nurses are optimally positioned to be the heart of healing.