Absolute and Comparative Advantage

In trade, absolute advantage is when a country can produce a greater quantity of a good or service with the same input (typically labor) at a lower cost. The theory of absolute advantage was developed by the Scottish economist Adam Smith in his book The Wealth of Nations. 

Comparative advantage is a theory developed by the English political economist David Ricardo in his book On the Principles of Political Economy and Taxation. Comparative advantage, also called Ricardian advantage, describes one country's ability to produce a good or service at a lower opportunity cost than another country. Opportunity cost is the idea that making and selling one product or service is a trade-off, since you forfeit the opportunity to produce another product instead.

Read this section and answer the questions at the end.

Review Questions

  1. What is absolute advantage? What is comparative advantage?
  2. Under what conditions does comparative advantage lead to gains from trade?
  3. What factors does Paul Krugman identify that supported the expansion of international trade in the 1800s?