Organizational behaviour is the study of how individuals, groups, and structures influence behaviour within organizations in order to improve effectiveness. It draws from various disciplines including psychology, sociology, social psychology, anthropology, and political science. Psychology contributes knowledge about individual behavior from learning theorists and personality theorists. Sociology examines social systems and roles. Social psychology studies interpersonal influence. Anthropology provides understanding of cultural differences. Political science analyzes power and conflict. The goal of OB is to apply this interdisciplinary knowledge to make organizations work more effectively in a global context while managing diversity, quality, and ethics.