Markets work best when many companies vie for customers’ favour. They work badly when a few firms dominate, carving up sales between them. Economists therefore need a measure of whether markets are ...

Economists are professionals in the social science discipline of economics who study how societies allocate resources among competing uses. Economics includes specialized fields such as macroeconomics ...

Photo by Jezael Melgoza via Unsplash. This module introduces the study of comparative economic systems, which is concerned with analyzing differences in economic institutions across societies. It ...