Archive for the 'Exchange Rates' Category

Jun 01 2008

Purchasing Power Parity - “for the inebriated masses”

pintprice.com - the price of beer anywhere in the world

The theory of purchasing power parity (or PPP) holds that in the long run, the price of a particular basket of goods should adjust across countries and currencies to “cost” the same amount regardless of the currency the goods are denominated in. In other words, one dollar should buy the same amount of “stuff” in the US as it does in Mexico, China, the Netherlands or anywhere else in the world. If a dollar buys MORE in one of these countries once it’s been converted to the local currency, it implies that the local currency is undervalued and should adjust in the long run to achieve parity in the amount it can purchase in dollar terms.

One popular measure of purchasing power parity, devised by the folks at the Economist magazine’s intelligence unit, is the Big Mac Index, which measures the price of McDonald’s Big Macs in over 100 countries where they can be purchased. You can read more about this index here.

The Economist magazine recently reported on an new alternative to its own PPP index, “the Price of a Pint”:

Barflies around the world provide a useful service for their beer-drinking comrades at PintPrice.com. The prices of pints of lager are compared on the basis of anecdotal evidence from beer-drinkers around the world, so figures are regularly updated. There are some surprising results. Beer in Zambia and Burundi seems eye-wateringly expensive considering that they are among the world’s poorest countries. The French overseas départments of Guadeloupe and Martinique charge just about as much as in mainland France. Beer-loving America and Britain fall somewhere in the middle. Happily for sports fans at the Beijing Olympics, a pint in China is just $2.46.

I thought it might be useful to some of our graduating seniors planning their summer vacations or gap years. Pay close attention to the data in this table.


(source: http://www.economist.com/displayStory.cfm?story_id=11333131)

So, if cheap beer is a priority in your vacation decision, it looks like North Korea and Myanmar are ideal destinations. I must say, I am relieved to see that Switzerland, my own new home, is not in the top ten… but it is far from cheap.

The website will tell you the average price of a pint of beer in any country in the world, and then break it down to cities within each country. In Zurich, my soon to be home, a pint costs the equivalent of $6.57 US. Compared to my hometown of Seattle, Washington, where a pint goes for $3.25, that’s exactly double the price! Surprisingly, however, a pint of beer here in Shanghai goes for a shocking $5.15, more than double the Chinese average of $2.35.

Apparently, the price of beer has more to do with the local supply and demand than with relative exchange rates. Where the Big Mac Index offers a rather genuine approach to determining purchasing power parity (since the Big Mac is an identical product sold by the same restaurant facing similar costs in over 100 countries), a pint of beer is a bit more subjective a measure of PPP. Quality of beers clearly differ in locales as diverse as North Korea and Luxembourg, not to mention the incomes of beer drinkers, the number of domestic brewers, excise and value added taxes, consumers’ price elasticities of demand, and so on.

As summer vacation approaches, however, vacation planners may care to take into account the “Price of a Pint” index of purchasing power parity. Clearly, one’s dollars will go much further at bars in some places than others.

I know what you 18 year old American high school grads are thinking, “Mexico or Canada?” You’ll just have to follow the link to find out!

(Disclaimer: Mr. Welker is in no way encouraging his former students to travel to certain places based solely on the cheap price of beer there, merely to avoid places where beer is clearly out of their price range!)

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May 22 2008

Reflections on the weak dollar

I recently received an email from Sean Stoner, who writes a great blog, Maslow Forgot About Beer. I had previously commented on a post Sean wrote about McCain and Clinton’s proposed gas tax holiday, which is how he found my blog. Sean wanted to know my views on the weak dollar:
Jason,

What do you believe is the most direct cause(s) of the weakening of the dollar? Is it the trade deficit and/or spending deficits along with increased borrowing overseas? Is it offshoring? Tax cuts? And how direct is the causality of this to oil and commodity prices?

Of course I’ll give you full credit in the post for educating me more on this subject. Thanks in advance !

Sean

Below is my reply. I am posting it here for posterity, and because I think it may include one possible explanation of the weak dollar within the grasp of IB and AP Econ students:

Hi Sean,

Keep in mind, I’m no expert here, only a high school economics teacher… but let me just share a few thoughts about one cause of the weak dollar.

I think something you’ve forgotten to mention in your email is the role that the mortgage crisis has had on the dollar. Much of the debt from the sub-prime mortgage market was held by overseas investors. As home foreclosures picked up late last year, confidence in these mortgage-backed securities plummeted and demand for these American assets fell, thus demand for dollars among foreign investors has fallen with it, depreciating the dollar.

I think the housing market is at the core of a lot of our woes right now. In my econ class we talk about the “wealth effect” of falling home prices on consumer spending. Besides disposable income, the main determinant of overall consumption in the economy is the level of “wealth” among households. Of course, Americans’ greatest source of wealth is their homes… and the reason home prices have fallen is a simple supply and demand story, which is within the grasps of anyone who knows how supply and demand interact to determine price in a marketplace.

Low interest rates during the late Greenspan era spurred a period of new home sales, which drove prices up, spurring a building frenzy which shifted supply out. As long as demand increased more rapidly than supply, the illusion that house prices would continually rise was believable, thus buyers could be convinced that an adjustable rate mortgage (ARM) was the perfect type of loan for them. But the rising prices were unsustainable, and when the Fed began increasing interest rates a few years ago, demand for new homes declined, right as inventory was at an all time high. Naturally, home prices began to stabilize then fall, and as the “adjustable” part of all those “sub-prime” ARMs kicked in, monthly payments became too much for some Americans to bear. In an attempt to liquidate their now unaffordable houses, millions of Americans put their homes for sale, while thousands began to default on their loans, both which combined to shift supply ever further outward, putting even more downward pressure on home prices.

The story continues from here: falling home prices mean less “wealth” which means less consumer spending which means less total output in the economy which means less demand for workers which means rising unemployment… aka, RECESSION! And that’s where we are today.

So, as you can see I think the housing market is at the core of our problems. The weak dollar too, as demand for American homeowners’ debt has declined among foreign investors. Now, in the face of a recession, the Fed has lowered interest rates once again to try and stimulate new spending and investment, further exacerbating the dollar’s decline, as lower returns in the US bond market divert investors out of dollars and into more secure investments, such as… you guessed it, OIL.

The falling dollar had encouraged investors to look for stable investments, such as commodities like oil, copper, coal, etc, driving demand and prices for these commodities up, contributing to the cost-push inflation that has accompanied America’s economics slowdown.

So yes, it’s all connected… rising unemployment, sluggish growth, rising price levels and falling real wages. At the core, however, is the housing market and the “irrational exuberance” that led to a speculative building and buying spree over the last six years: a bubble which began bursting late last year and continues to have a ripple effect across the economy.

Bush’s tax cuts and deficit spending just made this whole mess even worse. I did a blog post a while back about the trade deficit with China, budget deficits and the value of the dollar, you can read that here: “Excuse me China, could you lend us another billion?”

Okay, that’s all I’ve got for you today… I hope some of these observations are useful!

Best, Jason

2 responses so far

Apr 28 2008

More on exchange rates: Winners and losers of a strong British pound

BBC NEWS | Business | Q&A: Strong pound - winners and losers

Here’s another great article to help you understand the advantages and disadvantages of a strong currency. The British pound reached an all time high against the dollar late last year ($2.08 per pound, or 48 pence per dollar!!). So who are the winners and losers from a strong British pound, anyway?

Here’s a quick run-down… to read about why, click the link and read the article.

  • Winners: Brits traveling and shopping in the US, US businesses, British airlines, British consumers, British drivers
  • Losers: Americans traveling in Britain, small businesses in the UK, British exporting firms, British airlines, shareholders in certain companies.

Discussion Questions:

  1. Why may British airlines benefit AND lose with a stronger British pound?
  2. Who else will benefit from the strengthening pound that is not mentioned by the article? Refer to your notes from class.
  3. Who else will be harmed by the stronger pound that is not mentioned?

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Apr 28 2008

Does the weak dollar help US manufacturers?

Yes, but it’s a bit more complicated than it might seem at first. This podcast looks at the impact of the falling dollar on the aerospace industry, in which manufacturing for the industry’s largest firms is sourced to hundreds of smaller companies each with factories in countless countries from North America to Europe to Asia.

The recent fluctuations in the US dollar exchange rate has wreaked havoc for firms located in the US and trying to compete in this competitive market. In some cases, the outcome has been positive, but as you’ll hear, not always.

Listen to this podcast then discuss the questions below:

 
icon for podpress  Weak Dollar Can Bode Well for Manufacturers [5:18m]: Play Now | Play in Popup | Download

Discussion Questions:

  1. How has the weaker dollar helped the Connecticut firm Kamatics?
  2. How has Kamatics been hurt by the weaker dollar?
  3. Why do fluctuations in the dollar make “business more unstable”?
  4. How does the impact of currency swings become more ambiguous “as the economies of the world become more intertwined”?
  5. Why did EchoAir stop manufacturing products in Romania? What impact would a revaluation of the Chinese Yuan have on EchoAir’s current manufacturing decisions?

2 responses so far

Apr 24 2008

Dominican Republic struggles to find its “comparative advantage” as it faces new competition from Asia

FT.com / World / Americas - US economy threatens Dominican Republic

Trade based on comparative advantage… the theory originally articulated by Adam Smith, later fine-tuned by David Ricardo, the theory that suggests that if each nation specializes its economic activity on the products for which it faces the lowest opportunity cost, then trades with its neighbors, total world output and efficiency can be maximized: today this theory represents the philosophical underpinning of all free trade agreements signed between and among the nations of the world.

Through trade, countries can exchange their extra output with other nations for the goods specialized in by others, enabling all nations to enjoy a level of consumption beyond what they’d be able to achieve if they tried to produce all goods domestically.

For many developing countries, with their abundance of either land or labor, comparative advantages tend to lie in either agricultural goods or low-skilled manufactured goods. Since global prices for food are highly unstable and dependency on healthy harvests, good weather, and stable rainfall are all highly risky endeavors for a poor country, developing nations prefer to foster the growth of manufacturing sectors in their path towards economic development.

Strategies for economic growth available to developing nations include export-oriented and inward-oriented growth. A country like the Dominican Republic, the largest economy in the Caribbean, has pursued a predominantly export-oriented growth strategy, promoting through “free zones” the growth of a textile industry aimed at producing goods for consumers in developed countries, primarily the US.

To the Domincans, producing textiles for export to America has successfully given the people of this poor nation a grip on a rung of the ladder towards economic development. The import of capital has taken previously unproductive workers out of agriculture and put them into an industry where productivity, thus income, has risen, leading to improvements in living standards. Export-led growth, however, runs some serious risks of its own, as is being realized by the people of the Dominican Republic today.

It had been clear for some time that Luis Caraballo’s textile factory, in one of the Dominican Republic’s largest “free zones”, was struggling.

Finally, last December, he closed the factory gates for the last time: cut-throat competition from China and Vietnam, a weakening US dollar and unsustainable costs had become too much.

Once a hot destination for American companies looking for a cheap place to “off-shore” production of labor intensive textiles, the Dominican Republic today faces new competition, and is finding its comparative advantage slip slowly away from textiles…

The Dominican Republic depends heavily on the US, which is the destination of more than 85 per cent of exports. But textile exports – these days accounting for less than a third of total exports – fell by 32 per cent over 2007.

Although other countries in the Caribbean are also suffering from Asian competition – with Chinese textile exports to the US tripling between 2000 and 2005, while Vietnam’s multiplied almost 117 times – the Dominican Republic has been worst hit.

Here’s the thing: a nation’s comparative advantage may shift over time (from land to labor to capital intensive goods) as the structure of the global economy evolves. Once an economy like the Dominican Republic’s has undergone a period of structural adjustment, away from agriculture and towards industry, the flow of low wage workers from farm to factory begins to slow to a trickle, leading to rising wages and increased competition from countries with more abundant supplies of cheap labor.

The challenge for policy makers is to manage the structural changes as they come, minimizing the deleterious impact such global shifts of productive resources has on the citizens of a country like the D.R. Clearly, it is in the country’s interest to prepare its citizens for a “new economy”, one in which skilled labor will play a larger role. The problem is, this requires a solid education system, which the D.R., it turns out, does not yet have:

There is widespread acceptance of the need to develop a better-educated workforce, but so far education spending has been inadequate.

“The government simply doesn’t have enough resources,” said Mr Montás. About 40 per cent of its budget goes on debt obligations and another 15 per cent is dished out through subsidies. Just 1.5 per cent goes towards education.

It also turns out that this is a balance of payments story:

Mr Montás calculated that for every percentage point the US economy contracted, the Dominican Republic’s GDP would shrink by 0.4 per cent.

Not only will exporters be hit, but also the huge tourism sector and remittance flows…

One possible result of the decline in exports and flows of remittances from the US will be a depreciation of the D.R. peso, as demand for pesos by Americans falls. A weaker peso might make the country’s exports attractive once again, assuming the exchange rate is allowed to adjust on foreign exchange markets. A weaker peso should help slow the decline in the D.R.’s exports to the US, at least until new competition emerges, perhaps elsewhere in Asia, maybe even from Africa or other Latin American countries.

In all likelihood, given the increased competition from Asian textile manufacturers, continued economic growth in the Dominican Republic will depend on the country’s ability to educate and train its workforce to adapt to a more capital, technology and information-based economy, which, if successful, will eventually lead to rising incomes and higher standards of living for the people of the this rising Caribbean nation.

Comparative advantages evolve with the emergence of new competition among developing and developed countries. The negative impacts this evolution has on a particular economy can be managed if wise policy actions are taken to assure a country’s workforce is educated and trained to participate in tomorrow’s economy, rather than yesterday’s or today’s.

26 responses so far

Apr 19 2008

The dollar’s weak… no, wait, it’s strong!

I like this commercial. It teaches us nothing about economics, but it’s amusing and brings some light to a rather dismal outlook for the US economy and falling dollar…


10 responses so far

Apr 03 2008

Unforseen consequences of weaker dollar - fewer immigrants!

FT.com / World - American dream hit by dollar’s decline

Ever wonder if there was a connection between the strength of a country’s currency and the flow of immigrants into that country? No? Me neither… but interestingly it appears that there is a direct relationship between these variables. The weaker a country’s currency, the fewer immigrants cross its borders to find work. Here’s why:

Migrant workers are choosing to move to Europe, Australia or Canada instead of the US in order to protect the purchasing power of the money they send home to their families, according to one of the world’s leading experts on remittances.

The shift is a result of sharp falls in the value of the US dollar against other international currencies, many of which have been boosted by the rise in commodity prices.

This news may make some American’s happy, since it could mean more opportunities for the American workers who may have lost their jobs during the current recession. This, however, may not be the case. It turns out that much of the decline in immigrant workers is in high skilled fields for which demand for workers in the US remains high even in times of recession. According to the article, “the trend was especially notable among skilled workers, such as doctors, nurses and information technology specialists”.

A decline in the inflow of high skilled workers may actually make Americans worse off. I have blogged about the shortage of American workers in fields such as engineering, software design, and natural gas rig technicians,and I don’t think many Americans would argue that health care in America is already too cheap, so I suspect that more doctors and nurses would be desired.

A weak dollar has many effects on America. In some ways, it makes the country better off. As I have blogged about here, a weak dollar should lead to more balanced trade, a boom for US manufacturers, and an increase in exports, all related, of course, to the relative decline in prices of US goods to foreign consumers. But a weak dollar may in fact do more harm than good, one reason for which is explained here: skilled foreign workers whose talents are in strong demand in the US are moving more and more to European markets to find work.

Anti-immigration hawks may be cheering, but American consumers may start rearing as high-skilled labor shortages drive up wages and prices in the markets Americans most depend on today: health care, energy and technology.

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17 responses so far

Mar 31 2008

Politics, priorities, and the Phillips Curve

FT.com / Asia-Pacific / China - Weak dollar troubles Beijing

Inflation, with its erosive effects on wealth and income, has plagued China at increasing rates since mid-2007. In February it reached an annualized rate of 8.7%, threatening to undermine China’s GDP growth rate, which has been predicted in the 8% range for this year.

As we have discussed in our our AP Econ class here in Shanghai, China’s inflation is caused by a combination of demand and supply-side factors. On the demand-side, a growing middle class has driven consumer spending to record levels recently, surpassing investment as the largest component of China’s GDP in 2007. Of course, as always, high inflation (thus low real interest rates), optimism about rising consumption in the future, and a comparative advantage in labor-intensive manufacturing (albeit a diminishing one as wages continue to rise) all combine to keep investment extremely high. Furthermore, cheap exports have helped keep demand for China’s output from abroad strong. The combination of increasing consumption, strong investment, and its trade surplus have resulted in demand-pull inflation.

On the supply-side, China has encountered additional inflationary pressures of late. Rising energy prices (mostly due to coal and oil shortages) combined with record rises in food prices (24% increase in the last year), have driven costs to firms up, shifting the aggregate supply curve leftward, further fueling inflation.

Knowing the damaging effects inflation has on income and wealth, it might be assumed that Beijing would place the utmost emphasis on taming the country’s rising prices. This, however,is not at the top of the government’s macroeconomic goals, according to premier Wen Jiabao:

On the issue of whether he would sacrifice economic output to bring down inflation, at the risk of increasing unemployment, Mr Wen indicated that growth re­mained the overarching priority. “We must ensure that our economy will grow…in order to ensure employment,” he said. “China is a developing country with 1.3bn people. We have to maintain a certain degree of fast economic growth to provide enough jobs.

”He said China needed to add about 10m jobs a year for the next five years, a lower figure than in the past whenPC the aim was growth of 15m-20m jobs a year.

The tradeoff between inflation and unemployment to which Mr. Wen refers is a text book example of the challenges faced by macroeconomic policymakers everywhere. This trade-off is illustrated in the Phillips Curve model, which shows that in the short-run, there exists an inverse relationship between the price level and the unemployment rate.

In his words above, Mr. Wen demonstrates Beijing’s preference in the trade-off between inflation and unemployment: He’ll take inflation… Here’s why.

In case you haven’t heard, China is not a democracy. Nor is it a, ehem, “free” country. According to Alan Greenspan in his book “The Age of Turbulence”, democracy and freedom of speech act as “safety valves” in Western countries; in other words, in times of economic or political unrest, the right to gather in the streets, the right to vent frustrations through a free press and the opportunity to advocate political and economic change through the various media, all combine to prevent violent and revolutionary uprisings when times get tough economically.

Take the US for example. Times are certainly tough right now. Inflation’s approaching 4-5%, while nominal growth has nearly stagnated. Unemployment, while it has technically fallen recently, in reality has risen as hundreds of thousands of workers have given up searching for work. The bursting of the housing bubble represents one of the most massive losses of wealth in recent history. A weak dollar has meant that even cheap imports don’t seem so cheap anymore. Throw in the desperate war in Iraq, the nuclear threat from Iran, rising food prices, $110 oil and an incredibly unpopular national leader, and by some measures the country would appear ripe for revolution. However, a revolution is about the least likely thing to occur in America, because it enjoys the “safety valve” of democracy. Rather than overthrowing their government, Americans have the right to go to the pole and vote for a new one, which in all likelihood will occur this November when it seems either Barrack or Hillary stand the greatest chance and winning the White House.

Now let’s look at China. The picture’s not quite so gloomy for the Chinese right now. Yes, inflation is high, as in the US. But unlike America, China is still growing at a very healthy pace, unemployment is probably still below its natural level, the real estate markets in China’s cities are still booming, meaning the middle class residents there are experiencing leaps and bounds in terms of personal wealth. Demand for its exports remains strong, and ever more poor Chinese are finding jobs in high paying factories across the country. Investments in capital, infrastructure and education point towards a bright future of continued growth for the foreseeable future.

But wait, 8.4% is something to worry about, especially when we take into account the 24% increase in food prices. Shouldn’t Wen and Beijing be taking drastic steps to reign in this high rate of inflation? In short, NO, they shouldn’t. Because as can be seen in the Phillips Curve, to reduce inflation could result in another, far more serious problem for Beijing; rising unemployment.

It appears that Beijing’s greatest fear is a population out of work. Its goal of creating 10 million new jobs is ambitious, but in the eye’s of the government, necessary. The Chinese people do not enjoy the “safety valve” of democracy through which economic frustrations and hardships can be channeled were the country to experience a slowdown in growth and an increase in unemployment. The last time the economy faced high inflation AND high unemployment, students, workers, soldiers and tanks all gathered for an afternoon of urban warfare under Mao’s somber gaze in Beijing. To avoid such massive revolutionary movements in the future, Beijing must do all it can to insure job creation continues and growth remains strong, even if the trade-off is record high inflation.

This one passage spoken by Wen Jiabao, China’s premier, tells a vivid story about the reality of Communist dictatorship in China. Sound economic policy may go on the back burner in times of political uncertainty. Price controls, such as those on petrol in Shanghai (speaking of, the long lines at gas stations are back!), were a microeconomic example of bad economics; Beijings hesitance to seriously tackle inflation is a macroeconomic example. Holding on to power seems to be more important than stabilizing prices, at least for now.

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