Econ 211 Notes

Definitions

  • Production Possibility Frontier (PPF): A graphical representation of the maximum output of two goods, showing trade-offs.

Assumptions of the PPF Model

  1. Society produces all goods jointly.

  2. Resources are fixed, meaning no additional labor can be hired.

  3. Technology is constant; innovations are not considered within the basic model.

  4. Economic growth is not presented in this model.

Graphing Production Possibilities

Key Points on the Graph

  • Draw axes representing burgers (X-axis) and cars (Y-axis).

  • Define specific points:

    • Point A: 100 million burgers, 0 cars.

    • Point B: 90 million burgers, 4 million cars.

    • Point C: 75 million burgers, 8 million cars.

    • Point D: 50 million burgers, 12 million cars.

    • Point E: 0 burgers, 16 million cars.

Understanding Opportunity Cost

  • Opportunity cost increases as production shifts between goods.

  • When moving from point A to E, there is a significant trade-off which leads to increasing opportunity costs.

Analyzing the Shape of the PPF

  • The curve is generally bow-shaped due to increasing opportunity costs when switching production focus.

  • Linear PPF indicates constant opportunity cost between two goods.

Movement Along the PPF

Efficiency Points

  • Being on the curve (points A, B, C, D, E) indicates efficient resource use.

  • Points inside the curve indicate underemployment of resources (inefficient), outside the curve is unattainable with current resources.

Types of Resource Use

  1. Efficient Use: Producing at maximum capacity on the curve.

  2. Underemployment: Resources not fully utilized.

  3. Overemployment: Beyond capacity, not sustainable without additional changes.

Shifting the PPF

Factors Causing Shifts

  • Rotational Shift: Results from technological advancement affecting one good's production without changing the other good (e.g., new car manufacturing techniques).

  • Parallel Shift: Affects all goods produced simultaneously, often due to overall economic growth.

General Technological Advancements

  • General technological improvements can increase production potential across both goods in the economy.

Comparative Advantage and Trade

Concept of Comparative Advantage

  • Defined as the ability to produce a good at a lower marginal opportunity cost than another economic entity.

  • Encourages specialization and trade to maximize production efficiency.

Determining Comparative Advantage

  • Comparative advantages arise due to:

    • Differences in resource availability

    • Variations in production technologies

    • Quality differences in inputs

Absolute Advantage

  • Absolute advantage refers to producing more outputs with fewer inputs compared to a competitor.

  • Not synonymous with comparative advantage.