Principles of Microeconomics - Comparative Advantage Summary

Outline/Learning Outcomes

• Trade and Preferences

• Specialization, Productivity, and the Division of Knowledge

• Comparative Advantage

• Trade and Globalization

Comparative Advantage

• Defined by lower opportunity costs.

• Example:

  • Mexico: 1 shirt = 1/6 computer (lower opportunity cost in shirts).

  • U.S.: 1 shirt = 1 computer (lower opportunity cost in computers).

• Specialization:

  • Mexico should produce shirts.

  • U.S. should produce computers.

Absolute vs Comparative Advantage

• Absolute Advantage: Lower cost in producing goods.

• Comparative Advantage: Lower opportunity cost.

• Countries can benefit from trade regardless of absolute advantage.

Production Possibilities Frontier

• Illustrates combinations of goods a country can produce based on productivity.

Trade Increases Productivity

• Without Trade:

  • Mexico: 1 computer, 6 shirts.

  • U.S.: 12 computers, 12 shirts.

  • Total: 13 computers, 18 shirts.

• With Trade:

  • Mexico: 0 computers, 12 shirts.

  • U.S.: 14 computers, 10 shirts.

  • Total: 14 computers, 22 shirts.

• Consumption After Trade:

  • Mexico: 1 computer, 9 shirts.

  • U.S.: 13 computers, 13 shirts.

Trade and Globalization

• Globalization: Increased integration of economies and cultures.

• Advantages: Economic growth, specialization, access to goods.

• Disadvantages: Job displacement, environmental concerns, inequality.

Conclusion

• Trade makes both countries better off through specialization based on comparative advantage.

• Increased specialization leads to higher standards of living and productivity.