A middle-range theory has fewer concepts and propositions than a grand theory which align with nursing practice and guide research. Conceptual models guide the direction of the propositions and empirically testable hypotheses used to create or refine middle-range theories. The progression from conceptual model to middle-range theory can be identified by reviewing King’s theory of goal attainment (middle-range theory) which is derived from King’s conceptual system (conceptual model).
Choose a conceptual model and middle-range theory. Explain how the concepts of the conceptual model and middle-range theory are consistent and are linked.