Capitalism, communism and socialism are the world’s three major economic systems. While the phrase “economic system” may seem like a yawn, countless people have fought and died in major wars over which one should dominate.

Shifts from one system to another, like the 1989 fall of communism in much of Eastern Europe, changed the lives of millions. And while researchers know that a country’s economic system dramatically affects people’s living standards, less is known about how attitudes toward these systems have changed over time.

We are professors working at Boston University’s new Ravi K. Mehrotra Institute, which is trying to understand how business, markets and society interact. Given many recent criticisms of capitalism, we were surprised to find positive sentiment toward capitalism is slowly rising over time.

ECONOMIC SYSTEMS EXPLAINED

Capitalism, communism and socialism are economic and political systems that differ in th