This document discusses several theories of leadership, including:
1. Blake and Mouton's Managerial Grid theory which identifies five leadership styles based on concern for production and people.
2. House's Path-Goal Theory which proposes that a leader's job is to assist followers in achieving goals and provide direction and support.
3. Likert's Management Systems which identified four systems of management based on extensive research.
4. Transformational and Transactional leadership theories, with transformational leadership inspiring extraordinary outcomes.