Andragogy is the scholarly approach to adult learning. It focuses on strategies for teaching adults rather than children. The term was coined in 1833 but was developed into a theory of adult education by Malcolm Knowles in the 1960s. Knowles identified key principles of andragogy including the adult learner's need to know, self-concept as independent and responsible, prior experience being a resource, readiness to learn, orientation to learning, and motivation to learn. Andragogy emphasizes independence, problem-centered learning, and immediate relevance to work or personal life.