Transcript Slide 1
Chapter 4 Review Slides prepared by Thomas Bishop Production Possibilities (cont.) Production and Prices (cont.) Factor Prices, Goods Prices and Factor Levels (cont.) Factor Prices, Goods Prices and Factor Levels (cont.) Factor Prices, Goods Prices and Factor Levels (cont.) Factor Prices, Goods Prices and Factor Levels (cont.) • We have a relationship among factor prices and good prices and the levels of factors used in production: • Stolper-Samuelson theorem: if the relative price of a good increases, then the real wage (or rate of return of the factor) used intensively in the production of that good increases, while the real wage (or rate of return of the other factor) decreases. – Pc/PF up (T/L)C up; (T/L)F up. – Marginal productivity of a factor increases as the level of that factor used in production decreases: L down MPL up. – Under competition, the real wage/return is equal to the marginal productivity of the factor: W/Pc=MPL – Pc/PF up W/Pc up, W/PF up ;r/Pc down, r/PF down Factor Prices, Goods Prices, Factor Levels and Output Levels (cont.) Factor Prices, Goods Prices, Factor Levels and Output Levels (cont.) Key Points: • Increase of total factor endowments (capital, labor) cannot affect factor return (rent, wage) in the 2-sector economy. • Different from one-sector economy( depends on MP). • Because the labor-abundant country can produce more of, and export, the labor-intensive good. • It can fully employ its labor while still paying the same wages as a capital-abundant country. • However, increase of price ratio, of course, affect industrial output share. Production Possibilities (cont.) An Example • When the relative price of cloth increases, output of cloth increases. Also, K/L ratio in each industry increases as well. • Example due to Pc up • C=KL; F=f(K,L) • Total labor=200, total K=30 • C is labor intensive; F is capital intensive. • S-S theorem: (K/L) increase in both industry; Cloth industry expands while food shrinks. K L 10 100 20 160 1/10 1/8 100 10 40 1/5 1/4 0 C F 20 0 KN LN Trade in the Heckscher-Ohlin Model • Suppose that the domestic country has an abundant amount of labor relative to the amount of land. – The domestic country is abundant in labor and the foreign country is abundant in land: L/T > L*/ T* – Likewise, the domestic country is scarce in land and the foreign country is scarce in labor. – However, the countries are assumed to have the same technology and same consumer tastes. • Because the domestic country is abundant in labor, it will be relatively efficient at producing cloth because cloth is labor intensive. Excess Demand of Cloth when Autarky Price is the Same Trade in the Heckscher-Ohlin Model (cont.) Trade in the Heckscher-Ohlin Model (cont.) Factor Price Equalization • Unlike the Ricardian model, the Heckscher-Ohlin model predicts that factor prices will be equalized among countries that trade. • Because relative prices are equalized and because of the direct relationship between relative prices and factor prices, factor prices are also equalized. • Empirical Evidence Copyright © 2006 Pearson Addison-Wesley. All rights reserved.