Choose one of the following contingency theories:
1) House's Path Goal Theory (1971)
2) Hersey and Blanchard's Situational Leadership Theory (1977)
3) Kerr and Jermier's Leadership Substitute Ideas (1978)
4) Yukl's Multiple-Linkage Model (1989)
5) Fiedler and Garcia's Cognitive Resource Theory (1987)
Discuss what is known about the theory from a research perspective. Do we know whether the ideas work or not? Are there any practical "strategic" recommendations for leaders based on that theory?