Imogene King was an American nurse theorist who developed the Goal Attainment Theory. Some key facts about King include that she was born in 1923 in Iowa and received her BSN and MSN from St. Louis University in 1957. King's Goal Attainment Theory focuses on the interpersonal nurse-patient relationship and uses a systems approach. The theory proposes that nurses interact with patients on three levels - personal, interpersonal, and social systems - to establish relationships and help patients achieve their health goals. When nurses and patients are able to accurately understand each other, agree on goals, and work together to achieve those goals, satisfaction and efficient nursing care are achieved according to King's theory.