Political Science is the study of the nature, causes, and consequences of collective decisions and actions taken by groups of people embedded in cultures and institutions that structure power and authority. From the ancient Greeks to the present day and beyond From small-group collective decisions, through cities, to countries, all the way to global governance From the most despotic regimes to modern mass democracy to theories of better forms of political organizations From self-interested to group-oriented to altruistic behaviour From political stability to radical change Political Scientists understand, interpret, explain and critically assess events, patterns and structures of politics and government and generate observations of relevance to policy makers, their fellow citizens and global communities.