International economics

Table of Contents

1. Topic pack - International economics - introduction
2. Section 3.1 International trade (notes)
3. Section 3.1 International trade (questions)
4. Section 3.1 International trade - simulations and activities
5. Section 3.2 Exchange rates (notes)
6. Section 3.2 Exchange rates - questions
7. Section 3.2 Exchange rates - simulations and activities
8. Section 3.3 Balance of payments - notes
   1. BOPs - introduction
   2. Credits and debits
   3. Current account
   4. Capital account
   5. Financial account
   6. Relationship between accounts
   7. Balance of payments - calculation
   8. Current account & floating exchange rate
   9. Current account & fixed exchange rate
   10. Balance of payments problems
   11. Consequences of deficit / surplus
   12. Policies to correct a balance of payments disequilibrium
   13. Consequences of a financial account deficit / surplus
   14. Marshall-Lerner condition
9. Section 3.3 Balance of payments - questions
10. Section 3.4 Economic integration - notes
11. Section 3.4 Economic integration - questions
12. Section 3.5 Terms of trade - notes
13. Section 3.5 Terms of trade - questions
14. Print View

Marshall-Lerner condition

Marshall-Lerner condition - explanation

The depreciation of a currency will increase import prices and decrease export prices. Therefore, the more price elastic the demand for imports and exports, the greater will be the fall in demand for imports and the increase in demand for exports and the greater will be the improvement on the current account.

J-curve

Evidence around the world suggests that the Marshall-Lerner condition does not hold in the short-run, but does in the medium- to long-run. This is because in the short-run, there will be few extra exports sold when prices fall - people overseas do not react immediately and so export demand will take time to change. However, extra money will have to be paid for imports immediately and so the current account will tend to deteriorate. In the medium term, however, the lower export prices will lead to an increase in demand for exports and so the current account will start to improve. The price elasticity of demand for exports is lower in the short-run, but will be higher in the long-run.

This leads to the pattern shown in Figure 1 below - an initial deterioration of the trade balance followed by an improvement.

Figure 1 J-curve