This document summarizes several leadership theories including trait approach, skills approach, situational approach, path-goal theory, leader member exchange theory, transformational leadership, and transactional leadership. It provides details on leader member exchange theory and transformational leadership theory. Leader member exchange theory focuses on the quality of relationships between leaders and followers, noting leaders form in-groups and out-groups. Transformational leadership aims to inspire followers and focus on emotions, values and long-term goals. It encompasses idealized influence, inspirational motivation, intellectual stimulation and individual consideration.