A dynamic and multifunctional account of middle-range theories.

This article develops a novel account of middle-range theories for combining theoretical and empirical analysis in explanatory sociology. I first revisit Robert K. Merton's original ideas on middle-range theories and identify a tension between his developmental approach to middle-range theorizing that recognizes multiple functions of theories in sociological research and his static definition of the concept of middle-range theory that focuses only on empirical testing of theories.