Chapter 12 - Contingency theories of leadership. This chapter is designed to provide an overview of four of the more well-known contingency theories of leadership, which include the normative decision model (Vroom & Vetton, 1973), the situational leadership model (Hersey & Blanchard, 1984), the contingency model (Fiedler, 1967), and the path-goal theory (House & Dessler, 1974). | Lecture Leadership: Enhancing the lessons of experience (4/e) – Chapter 12