Health Promotion Behavior Concept A concept is a measurable variable in a hypothesis or theory. Concepts, which are intended to clarify the subject matter of the theory, play a role in theory development because they provide organizational structure to develop theories (McEwen & Willis, 2014, p. 51). Some concepts relevant to nursing include accountability, caring, pain, communication, and collaboration. In concept analysis, ideas and decisions are analyzed and broken down by the main features ...