This document discusses different leadership theories and styles. It describes trait theory, which suggests that innate qualities and characteristics determine leadership abilities. It also covers style theories, including Blake and Mouton's managerial grid and Ashridge Management College styles. The managerial grid evaluates leadership styles based on concern for people and production. Ashridge identifies autocratic, persuasive, participative, and democratic styles. Finally, it summarizes contingency theories from Adair, Fiedler, Bennis, Kotter, and Heifetz, examining how leadership effectiveness depends on situational factors.