Organizational behavior is the scientific study of human behavior in organizational settings, how it is influenced by individuals, groups and structure, and how that knowledge can be applied to improve organizational effectiveness. The document outlines the key elements and historical development of organizational behavior. It traces the evolution of the field from a focus on human needs during the Industrial Revolution to establishing as a separate branch of management by the late 20th century. Understanding organizational behavior is important as it provides tools to analyze behavior at multiple levels and helps managers improve skills, quality, and diversity in organizations.