Imogene M. Nursing educator, administrator, researcher, and practitioner. She developed a conceptual framework for nursing at a time when nursing was striving for status as a science and for recognition as a legitimate profession. From her conceptual system, a theory of
goal attainment was derived, within which she developed a transaction process model that makes her theory a
middle range theory. Her ideas have been tested in research and used by practitioners and educators. Several other theories have been derived from her conceptual system.