The document discusses three major theories of leadership behavior: the Ohio State studies, University of Michigan studies, and the Managerial Grid model. The Ohio State and Michigan studies identified two dimensions of leadership behavior: task-oriented and relationship-oriented. Relationship-oriented behaviors focus on trust, participation, and support, while task-oriented behaviors emphasize goal-setting and direction. The Managerial Grid identifies five leadership styles based on concern for production and people, ranging from indifferent to team leadership. Team leadership, with high concern for both tasks and relationships, is considered the most effective style.