Scholars contribute to management theories in several ways. They identify weaknesses in existing theories and propose new ideas, consider how theories apply to different types of organizations, and analyze factors like employee motivation and needs. New theories also emerge from considering an organization's hierarchy, using psychological tests to understand social needs, and recognizing that organizations interact with their environment. While early theories like scientific management focused only on productivity, later scholars developed approaches like human relations theory and contingency theory to account for social and situational factors. Overall, management theories have evolved over time as scholars critique past approaches and apply lessons from different contexts.