Chapter 4 discusses the behavioral approach to leadership, focusing on the actions of leaders and their influence on followers through task and relationship behaviors. It highlights key findings from the Ohio State and University of Michigan studies that identify different leadership styles, such as initiating structure, consideration, employee orientation, and production orientation. The chapter also critiques the behavioral approach for its lack of consistent links between leadership behaviors and performance outcomes, emphasizing the need for adaptability in different situations, which is further explored in Chapter 5's situational approach.