Organizational behaviour is the study of how individuals and groups act within organizations and how their behaviours impact organizational effectiveness. The document discusses key topics in organizational behaviour including what organizations are, their goals, elements that influence behaviour like people, structure, technology and environment. It also outlines managerial roles like interpersonal, information and decision-making roles as well as management functions like planning, organizing and controlling. Understanding organizational behaviour can help improve performance by allowing managers to observe, explain, predict and modify human behaviour in organizations.