A middle-range theory contains fewer concepts and propositions than a grand theory, but they are still relevant to nursing practice and guide research. Conceptual models direct the development of propositions and empirically testable hypotheses that are used to develop or refine middle-range theories. By reviewing King’s theory of goal attainment (middle-range theory), which is derived from King’s conceptual system, the progression from conceptual model to middle-range theory can be identified (conceptual model).

Select a conceptual model and a theory that falls somewhere in the middle.

1) Describe how the concepts of the conceptual model and middle-range theory are consistent and interconnected.