Related Unit: IB Economics Unit 4.7 – Balance of Payments (Unit 3.3 in the new IB Economics syllabus)

Topic: The Marshall Lerner Condition and the J-Curve

Learning Goals/Objectives:

• For students to understand that the levels of price elasticity of demand for a country’s imports and exports determines whether a depreciation or devaluation of the country’s currency will move the nation’s balance of payments towards a surplus or a deficit.
• For students to understand the impact of time on the effect of a depreciation or devaluation of a nation’s currency on its balance of payments in the current account.
• For students to evaluate the argument that a country will always benefit from a weaker currency.

Test of prior knowledge:

1. Define ‘price elasticity of demand’ and explain how it is measured.
2. With the use of examples, explain why some products have low price elasticity while others have a high elasticity. With the use of examples, explain why the price elasticity of demand for some goods changes over time
3. Explain how the depreciation of a country’s exchange rate might affect its current account balance. IS THIS ALWAYS THE CASE?
4. How might the PED for exports and imports influence the balance on the current account following a change in the value of a nation’s currency?

Process:

• Each student should research the forex market for his or her home country in the United States. If you are American, research the forex market for the dollar in Europe.
• Complete three pre-readings:
  • From BizEd:
    The Marshall Lerner Condition and The Economic Effects of a Devaluation
  • From Welker’s blog: The Marshall Lerner Condition and the J-Curve
    
• Using Yahoo Finance, research exchange rate data from the two countries two years ago up to today.
• Use Yahoo’s software to create two a line graph plotting the value of your currency in terms of dollars. For your initial graph, show the exchange rates over a two year period. For example:

The exchange rate of Japanese Yen in the United States over the last two years:

Next create a Google Doc (shared with your teacher)  of your answers to the following questions. Include in the presentation the graph of the exchange rates created in the step above.

Questions to answer in your Google Doc:

1. Create a graph of your currency’s exchange rate in the US over the last two years. Take a screen shot and save it to your computer as an image. Insert the chart into your Google Doc. Write a one paragraph description of the changes in your country’s exchange rate over the last two years. (2 marks)
2. Focus on two specific time periods from during the last two years: One in which your currency appreciated noticeably and one in which it depreciated noticeably. These  could be periods of just a couple of days or longer periods of weeks or more. (4 marks)
   • In Yahoo Finance, narrow the range of dates shown on your chart to the distinct period in which your currency strengthened and another period during which it weakened. Take a screen shot of the new graphs you’ve created, save them to your computer and upload them into the Google Doc.
   • Under each new chart, describe what is happening to the value of your currency in the two periods identified.
3. Beneath your two new graphs, explain TWO factors that may have caused the currency to change in value. (2 marks)
4. Given the changes to the exchange rate you identified above, what would you predict would happen to your country’s current account balance over the two periods identified? Explain. (4 marks)
   • Following appreciation (2 marks)
   • In the short-run
   • In the long-run
   • Following depreciation  (2 marks)
   • In the short-run
   • In the long-run:
5. For both the period of appreciation and the period of depreciation you identified above, explain the impact of the change in exchange rates on the following (4 marks)
• a firm that imports its raw materials from the other country
• a firm that exports its finished products to the other country
• consumers who buy imports from the other country
• a firm that produces good for the domestic market and competes with firms from the other country
6. Why does the price elasticity of demand for imports and exports increase over time following a change in a country’s exchange rate? (2 marks)
7. Why will a depreciating currency worsen a country’s current account balance in the short-run? Assuming the currency remains weak,  how would the current account balance change over time. (2 marks)
8. Draw a J-Curve showing the likely change in your nation’s current account balance following the period of depreciation of its currency shown in your chart above and explain its shape, referring to your country’s currency. (2 marks)
9. Read the following article:  ‘How Far Will the Dollar Fall?’ by Richard W. Rahn. Based on the extracts below, answer the questions that follow.

Some applaud the dollar’s fall because they believe it makes U.S. exports less expensive and that higher demand will cut the trade deficit. The downside of a low-value dollar is that it makes all the imports we consume more expensive, including raw material and parts used by U.S. businesses, and makes it costlier for U.S. dollar holders to travel or invest outside the U.S. A continued drop in the dollar’s value could destabilize the international economy, leading to a worldwide recession.

• Why might the weaker dollar worsen the US trade deficit? Under what conditions would the weaker dollar improve America’s trade deficit? (2 marks)

Some argue our large trade deficit (or current account deficit) is responsible for the fall in the dollar’s value. They have it backward. It is the flow of foreign investment dollars (the capital account) into the U.S. economy that drives the trade deficit.

• How does a large financial (capital) account surplus allow the United States to maintain a large current account deficit? (2 marks)

The world now is actually on a two-currency standard — the dollar and the euro. China in effect has fixed its currency to the dollar for the last two decades, and the Japanese central bank only allows the yen to fluctuate within a limited range against the dollar.

• How do exchange rate controls by China and Japan reduce the likelihood that a weaker dollar will improve the United States’ current account balance? (2 marks)

So long as the U.S. continues to offer a higher return on capital than its foreign competitors, both foreign banks’ and private investors’ demand for dollars grow, and the current account deficit can be sustained.

• If investments in the United States began earning lower returns relative to investments in other countries’ financial and capital markets, what would ultimately happen to the US balance of payments in its current and financial accounts? Explain (2 marks)

Total 30  marks – You have two class periods to work on this assignment. It will be graded as a “coursework” grade and counted towards your semester 1 report. To earn full marks, it must be completed by the end of the second class period.

The above lesson was inspired by the Biz-Ed activity “International Trade: The Falling Dollar or Rising Pound?”

A nation’s balance of payments measures all the transactions between the residents of that nation and the residents of foreign nations, including the flow of money for the purchase of goods and services (measured in the current account) and the flow of financial or real assets (measured in the financial or capital account). The sale of exports counts as a positive in the current account, while the purchase of imports counts as a negative. In this way, a nation can have either a positive balance on its current account (a trade surplus) or a negative balance (a trade deficit).

The US has for decades run persistent deficits in its current account. As the world’s largest importer, Americans’ appetite for foreign goods has been unrivaled in the global economy. Of course, this is not to say that the US has not been a large exporter as well. In fact, the US is also one of the largest exporting nations, along with China, Germany and Japan, in the world. However, the total expenditures by Americans on imports has exceeded the country’s income from the sale of exports year after year, resulting in a net deficit in its current account.

So the news that rising incomes in China have fueled a boom in US export sales should come as a relief to US politicians and more importantly, firms in the American export industry:

Last year, American exports to China soared 32 percent to a record $91.9 billion.

A study by a trade group called the U.S.- China Business Council says China is now the world’s fastest-growing destination for American exports.

While United States exports to the rest of the world have grown 55 percent over the past decade, American exports to China have jumped 468 percent.

Most of those exports have come from California, Washington and Texas, which have shipped huge quantities of microchips, computer components and aircraft. But states that produce grain, chemicals and transportation equipment have also benefited.

China, which last year surpassed Japan to become the world’s second largest economy (measured by total output), is soon expected to become the world’s second largest importer as well:

And while much of what China imports is used to make goods that are then re-exported, like the Apple iPhone, Mr. Brasher says a growing share of what China imports from the United States, including cotton and grain as well as aircraft and automobiles, is staying in China.

“You know all those BMW X5 S.U.V.’s that are in China? They’re being imported from the U.S.,” Mr. Brasher said in a telephone interview Thursday. “They’re being made by a BMW factory in South Carolina.”

All this must be good news for the US, right? Growing exports to China must mean a smaller current account deficit, greater net exports and thus stronger aggregate demand, more employment and greater output in the United States. However, this may not be the case. While exports to China grow, the US economy’s recovery has led to a boost in the demand for imports from China as well. So, ironically, even as exports have grown 468 percent in the last decade, the US has still managed to maintain a stunningly large trade deficit with China: 

Last year, China’s trade surplus with the United States was between $180 billion or $250 billion, according to various calculations.

Still, the combination of a weakening American dollar and China’s growing economic clout is likely to bode well for American exports. With China short of water and arable land, exports of crops to China jumped to $13.8 billion last year.

Study the graph below and answer the questions that follow.

Discussion Questions:

1. What is the primary determinant of demand for exports that has lead to the growth over the last decade seen in the graph above?
2. What types of goods has China primarily imported from the US in the past? As incomes in China rise, how will the composition of its imports from the US likely change?
3. How is it possible that the US current account deficit remains as large as it does (as much as $250 billion) despite the growth in exports to China?
4. The value of China’s currency, the RMB, is closely managed by the Chinese Central Bank to maintain a low exchange rate against the US dollar. How does maintaining a low value of its currency exacerbate the imbalance of trade between China and the US? How would allowing greater flexibility in the RMB’s value help reduce the large imbalance of trade between the two countries?
5. If the US spent $250 billion more on Chinese goods than China did on US goods in 2010, where did that $250 billion end up? What does China do with the money the US spends on its goods that it does not spend on US goods? Define the financial account and explain the relationship between a nation’s current account balance and its financial account balance.

Should President Obama consider writing a thank you note to Chinese leaders for artificially manipulating the Chinese Yuan in the foreign currency markets?

For many years now, Chinese authorities have artificially intervened in the foreign currency market by buying up U.S. dollars spent on Chinese products and, in turn, investing those same U.S. dollars in U.S. Treasury Securities (ie, bonds and notes). For those that are not familiar with the foreign currency market, Chinese authorities buy the same U.S. Dollars provided by the U.S. to purchase Chinese products and, thus, leave or supply Chinese Yuan to the currency traders resulting in a decrease in the price of the now more plentiful Yuan and an increase in the price of the now more scarce dollar.  The Chinese authorities intervene in the foreign currency market for the sole purpose of depreciating (weakening) the Yuan relative to the U.S. Dollar, thereby helping Chinese exporters to become more price competitive in global markets. It is estimated by many economists, that the Yuan may be overvalued versus the U.S. dollar by approximately 30% due to this foreign currency intervention by China.

So while it is true that this action taken by Chinese authorities clearly depreciates the Yuan and appreciates the Dollar, thus, unfairly harming U.S. exporters; it is also hitting the “sweet spot” by sending those same U.S. dollars back to the U.S. Government to fund the record federal deficit spending expecting to total $1.3T in 2011 and providing American citizens with reduced prices on imports via the stronger dollar! More specifically, this currency intervention by Chinese authorities provides needed loanable funds back to the U.S. Government lowering borrowing costs or interest rates during this important U.S. economic recovery time. It also appears that US leaders are sending mixed messages to China as just last year, Secretary of State Hillary Clinton visited Beijing to encourage Chinese leaders to continue to purchase U.S. Government securities. This seems at odds with US officials cry for China to stop intervening in the foreign currency markets because by doing so needed federal deficit funding would dry up from the Chinese, forcing the US to borrow elsewhere and raise interest rates to entice that lending.

In summary, perhaps in the short term the United States should consider not pressuring China, as Treasury Secretary Tim Geihtner, Obama and the media have done regularly. Perhaps US officials should lay low, at least for awhile, and start pressuring the Chinese again in about three or four years, after the Government’s budget no longer calls for such large spending deficits.

Review Questions

1. What specifically are Chinese leaders doing to keep the Yuan weak against the U.S. dollar?
2. Why are Chinese leaders intervening in the foreign currency market?
3. Which parties, both American and Chinese, are helped and hurt by this intervention?
4. What would happen, other things equal to U.S. interest rates if Chinese authorities immediately stopped intervening in the currency market? Why?
5. What would be the immediate impact on the U.S. poor and working class if the Chinese immediately stopped intervening in the currency market?
6. What policy position would you take as President of the United States on this issue?

Should President Obama consider writing a thank you note to Chinese leaders for artificially manipulating the Chinese Yuan in the foreign currency markets?

For many years now, Chinese authorities have artificially intervened in the foreign currency market by buying up U.S. dollars spent on Chinese products and, in turn, investing those same U.S. dollars in U.S. treasury securities. For those that are students of the foreign currency market, Chinese authorities buy U.S. Dollars and supply Chinese Yuan to the foreign currency markets for the sole purpose of depreciating (weakening) the Yuan relative to the U.S. Dollar, thereby helping Chinese exporters to become more price competitive.

So while it is true that this action taken by Chinese authorities depreciates the Yuan and appreciates the Dollar, thus, unfairly harming U.S. exporters; it is also hitting the “sweet spot” by sending those same U.S. dollars back to the U.S. federal government to fund the record federal deficit spending. This action by Chinese authorities helps keep U.S. interest rates lower than possible during this important U.S. economic recovery time and provides a great source of lending for U.S. government’s $800 Billion stimulus bill and the expensive Federal budget.

In summary, it seems to me that in the short term the United States should consider not complaining, as Treasury Secretary Tim Gheitner has done on several public occasions. Perhaps Gheitner should keep quiet for now and should start complaining again to the Chinese in about three or four years, after the proposed Obama budget no longer calls for such large deficits.

What do you think?

More misleading economic statements from uninformed people who have never taken an economics course!

What about, you say?

I’m glad you asked!

It seems like I continuously read and hear in the American press that the United States is creating a giant wealth transfer by buying oil from other countries. Those “wealth transfer” words imply to the typical citizen that somehow our U.S. money supply is leaving our country, never to return again, and somehow our country is then poorer after the transaction and the country we imported from is now richer!

That is only a half-truth! Yes, the other country becomes richer, but we grow richer also by an equal amount! Both countries always gain economically from trade!

Let’s first get a few things straight before I elaborate: I am not happy either as gas prices rise ($3.50 a gallon in the U.S. as of this writing, although down from over $4.00 recently). I am also not happy that a fairly large share of oil purchases are from countries like Saudi Arabia and Venezuela whose loyalty to our country is certainly questionable. Luckily, the U.S. produces 40% of its own oil consumed and the other 60% consumed is imported from many different countries with 85% of our imports coming from 15 countries with Canada and Mexico being the largest two.

However, when we buy from any of these countries, both countries benefit equally and there is NO transfer of wealth. When the U.S. buys oil from any other country those U.S. dollars paid on the purchase are immediately returned to the United States and are spent almost immediately in our country since the other country cannot use our dollars in their country. What is really happening is that both countries’ citizens GAIN (not lose!) equally as we are, in essence, trading one product for another for both countries to enjoy!

Let’s use an example. Let’s say the U.S. buys 1000 barrels of oil from Saudi Arabia. At today’s price per barrel of $100 that would mean the U.S. would pay Saudi Arabia $100,000 and Saudi Arabia would then, in turn, be forced to turn around and use the paper ($100,00 USD!) on say, a bunch of iPods from Apple. Yes, the Saudi’s are listening to “I Kissed a Girl” by Katy Perry with their IPods under those smart head robes they wear! Ladies and gentlemen: that is why they call it trade: the essence of the transaction is that we have traded some of our iPods for some oil to fuel our cars and heat our homes. Both of us have gained! Katy Perry is hot on the charts and the Saudi’s “got their hands in the air”, and we can now drive to 7-Eleven for a Big Gulp and stay warm in the winter.

Also, think of it this way: when an American buys a gallon of gas the money is, in substance, going to an American business such as Apple! All spending of US dollars is spent back into our economy, and all spending of Saudi dollars (actually they call their currency the “dollar” also but it doesn’t look like ours!) benefit the Saudi economy.

Yes, trade is mutually beneficial. I would rather a warm home this winter and forego another Katy Perry song!

FT.com / Asia-Pacific / China – Pressure builds over renminbi

In IB Economics, we’re currently studying the determinants of exchange rates. One important factor in determining the demand for a particular currency is the interest rates in the country whose currency is in question relative to that of other countries.

The recent cut of the federal funds rate in the US of 25 basis points to 4.5% brought the US rates closer to China’s recently increasing interest rate of 3.32%. The upward trend of Chinese rates (up 50 basis points this year) and downward trend of American rates (down 50 basis points this year) should diminish the appeal of dollar denominated financial assets and increase the demand for those in Chinese RMB. In the currency market, we should see weakening demand for dollars and strengthening demand for RMB, as US savings and government securities are relatively less appealing due to the declining returns on those investments. With further increases in Chinese rates expected (due to high inflation), the RMB should be in greater demand, as returns on Chinese investments looks to increase as rates rise. Continue Reading »

Asia Sentinel – A Falling Dollar Does Nobody Any Good

Many economists hail the decline in value of the US dollar as a boon to the American economy. It may sound counter-intuitive, but economic theory predicts that when a currency depreciates relative to other currencies, this could actually be good for the country’s economy? Why, you ask? Let’s consider an example:

In the last four months the value of a dollar in terms of euros has gone from 0.75 Euro cents to 0.69 Euro cents. For Europeans, that means that dollars are cheaper now than they were four months ago, therefore American goods are cheaper now than four months ago. Cheaper American products should mean more business for American companies as Europeans demand more of their stuff. Good for business, right? In the US, aggregate demand will shift out, unemployment should fall, and the price level should rise as more foreigners demand more American products. But what impact does the weaker dollar have on Americans? Continue Reading »

Made in China – The Atlantic Monthly

Here’s a great slide show and narrative about the manufacturing industry in the industrial city of Shenzen. After viewing the slideshow, discuss some of the questions below.

Discussion Questions:

1. What does the narrator mean when he says “Shenzhen is more or less an invented city?”
2. Why does the word “scale” come to the narrator’s mind as he explores Shenzhen? What key concept from our economics class includes the world “scale”? How does the growth of Shenzhen relate to this concept?
3. What is exported from Shenzhen to the US? What is being sent back to Shenzhen from the US? What does this suggest about the Chinese/US balance of trade? Why do you think this is happening?
4. Where do Shenzhen’s factory workers come from? Why do you think young women make up such a large percentage of factories’ workforces? Are the wages paid factory workers in Shenzhen “fair” wages? Why or why not?
5. Is manufacturing in Shenzhen labor intensive or capital intensive? What’s the difference?
6. What’s the significance of the last line about how Liam Casey, whose office overlooks the headquarters of the Shenzen communist party, has never “met anybody who was in there”. What does this say about communism in China today?

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Wu: Large yuan rise would hurt China — Shanghai Daily | 上海日报

China’s Vice Premier Wu Yi defends China’s currency controls in Washington:

The yuan’s value isn’t the cause of the deficit, Wu said yesterday at a
dinner in Washington attended by US Treasury Secretary Henry Paulson
and Federal Reserve Chairman Ben S. Bernanke.

About 85 percent of China’s surplus with the US is from foreign companies
exporting products no longer made in the United States, such as shoes,
she added.

So, America’s trade deficit is not because of a historically weak Yuan, rather because America imports shoes made in China. VP Wu should look more closely at her audience; she’s preaching to the choir with Paulson and Bernanke in attendance; and I doubt they’re swallowing what she’s dishing up. Of COURSE the trade deficit is because America imports “products no longer made in the United States”. But why do they do this? Uhm, could it be because of the historically weak Yuan? Looks like VP Wu could use a refresher in her principles of Macro course.

Now the US is threatening new trade barriers if the Chinese do not allow the Yuan to appreciate more on foreign exchange markets.

“Large scale yuan appreciation will have a negative impact on China’s
economy,” Wu said, adding that trade protection would hurt relations
between the US and China.

China’s increasing of the yuan’s flexibility may slow growth and cut into profits in Chinese firms. However, new barriers to trade with its largest trading partner will do the same. China’s liberalization of industry should now be accompanied by a similar liberalization of financial markets. A more balanced current account will allow China’s economy to begin growing at a more sustainable rate and help to allow China’s middle class access to the quality goods they demand from abroad.

Most importantly, American teachers in China will have access to more affordable breakfast cereal and quality coffee, which at current exchange rates cost more than I like to think about.

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Dani Rodrik’s weblog: Does Free Trade Bring Lower Prices?

Greg Mankiw’s Blog: Does free trade lower prices?

Here’s a very interesting discussion between two Harvard professors (a “diablog” as my IB students and I call it). Greg Mankiw (author of a widely used AP Econ textbook) takes Dani Rodrik to task on his view that countries producing the products for which they have comparative advantage, and trading in a free global market, may actually face higher prices as a result of free trade. This seems to defy what AP Econ students learn about the impact of free trade on domestic product prices.

In our text, we learned that in a particular market in which free trade exists, the world supply curve lies beyond the domestic supply curve, resulting in a lower world price, meaning domestic firms produce less output and sell it at a lower price than they would without trade. This of course would represent an industry in which the country in question is at a comparative disadvantage, and thus is a net importer of the product. Assuming that a particular country will be net importers of certain goods (those for which they have a comparative disadvantage) and a net exporter of other goods (those for which they have a comparative advantage), we may infer that the net result will be lower prices faced by consumers due to all the relatively cheap imports that trade affords. Rodrik, however, argues that in some cases, when a country is a net exporter (as the US is for agricultural products, given its huge comparative advantage in the farming industry), the foreign demand for its domestic output may in fact drive prices paid by domestic consumers up, as foreigners demand more and more of the country’s output in those markets. If the increase in price that results from exporting large quantities of output outweigh the price decreases that consumers enjoy due to cheap imports (think Walmart, folks) then perhaps free trade would result in an overall increase in the price level.

The theory brought forth in the Mankiw/Rodrik discussion goes way beyond AP Economics, but if you’re like me and enjoy pushing your understanding of economics to the edge, these articles just may be within the realm of an AP Econ student’s grasp of the subject! And if this stuff interests you as much as it does me, then you may just consider studying Econ in college! Which reminds me, for those of you who promise to major in Econ in college, I promise to have a pleasant surprise for you the day after our AP exams on the 17th! Stay tuned!

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