nature of personality and the structure of personality are distinguished, and the thesis that mainstream personality theories in psychology debate structure but not nature is illustrated with definitions. Mainstream theories assume that person ality is an inner determinant of behavior, but according to views in psychiatry, phenomenology and radical behaviorism the nature of personality is transactional. The theory of reinforcement schedules proposes general mechanisms of transac tions, and phenomenology gives particular transactions meaning. Interactionism, which locates personality in the person and (...) the situation, contributes measurement to transactionalism but its paradigmatic status is ambiguous because it implies an internal storage system for behavior. (shrink)