According to the American Economic Association, economics is the study of how people choose to use resources. Economics includes the study of labor, land, and investments, of money, income, and production, and of taxes and government expenditures. Economists seek to measure well-being, to learn how well-being may increase over time, and to evaluate the well-being of the rich and the poor.
Although the behavior of individuals is important, economics also addresses the collective behavior of businesses and industries, governments and countries, and the globe as a whole. Microeconomics starts by thinking about how individuals make decisions. Macroeconomics considers aggregate outcomes. The two points of view are essential in understanding most economic phenomena.