Archive for the 'AD/AS Model' Category

Mar 02 2010

A link between Keynes and Japan Airlines…

John Maynard Keynes was an economist whose opinions have shaped government policies throughout the 20th century. Joseph Sternberg of the Wall Street Journal explained an interesting link this week, between Keynesian policies and the fate of bankrupted Japan Airlines.

Keynes Killed JAL: The airline fell victim to infrastructure stimulus gone terribly wrong. Is China next? By Joseph Sternberg, Wall Street Journal, Jan 20th 2010

Keynesian policies suggest that during a period of depressed economic growth, a chronic lack of the demand is a core problem that couldn’t be solved with supply side policies. Instead he advocated for demand stimulus packages including infrastructure developments.

The Japanese economy has experienced a turbulent past. Throughout the 1960’s, 70’s and 80’s the level for GDP grew at impressive rates, but growth began to slow in the 1990’s due to the effects of an asset bubble. An asset bubble was caused by an abundance of cheap credit caused by exceptionally low interest rates. This lead to the prices of shares, houses and land rising very quickly as buyers speculated and outbid each other. The government responded by sharply raising interest rates in 1989, which crushed the bubble and stalled the economy.  Depressed wealth caused spending to stall, and the Japanese thrift and savings culture to return.

In the 1990’s the government attempted to stimulate the economy but this was largely unsuccessful. The result was low real growth (compared to the past), zero percent interest rates set by the Central Bank and a deflationary spiral. Politicians used a variety of policies, including Keynesian ideas to boost aggregate demand.

During the economic boom, the development of the aviation industry was an important pillar of the countries infrastructure development as Joseph Sternberg of the Wall Street Journal explains.

Starting in the 1960s, successive governments concocted aviation plans focused on building new airports. Perhaps this was justifiable back then, when Japan was an Asian tiger economy with a growing population. But in 1964, even before the bulk of the airport construction, the bullet train appeared. At that point, and especially as the shinkasen high-speed-rail network developed, it might have been prudent to ask whether air would invariably be the most efficient way to connect domestic destinations.

Unfortunately, by then the airport boom had taken on a life of its own. During the lost decade of the 1990s, airport construction popped up in many stimulus plans. National and local politicians, not to mention the politically powerful construction lobby, wanted to put an airport in every prefecture. And ordinary airports wouldn’t do. Because Japan’s relatively small flat surface area is in such high demand, one airport after another was built on reclaimed land in the middle of the ocean at enormous expense. Despite periodic public fulminations about out-of-control costs, in practice “expensive” seemed to be viewed as a net positive.

Boosters touted airports as creators of short-term construction jobs and longer-term boons to their areas. This airport binge has continued right up to today. Japan’s 98th airport opened last year: Shizuoka-Mt. Fuji, roughly 50 miles from the famous mountain. California, with a larger land area, has around one-third as many airports in regular commercial service, with another 35 or so “reliever airports” to handle business jets and general aviation.

The author reflects on the cost of the Keynesian stimulus. Whilst in the short term, development of the airport network provided jobs and helped the construction industry; in the long term the projects have created an inefficient and expensive transport network. Japan Airlines has been forced to offer flights from each of these 98 regional airports, often paying high landing charges, and operating flights at below capacity. Overtime this pressure may have caused Japan Airlines to slide into bankruptcy.  Perhaps this is a unique one off case, but the author predicts some interesting links to current developments in China.

Lest anyone think this is a uniquely Japanese problem, consider all the other places in the world currently undergoing their own Keynesian infrastructure booms—and especially China. For instance, a new high-speed rail line is due to connect Beijing to a station an inconvenient 45 minutes from the downtown commercial center of Guangzhou in southern China. The train will take somewhat less than eight hours to connect cities reachable in under three by air. Will enough passengers ever make that trek for the train to operate in the black?

Discussion Questions:

  1. Why does John Maynard Keynes suggest that demand stimulus is an appropriate response, for a country stuck in a deep recession, with depressed demand?
  2. If central bank interest rates are very close to zero, what other policies could the government use to stimulate growth?
  3. How could supply side policies actually make the recession worse in Japan?
  4. Outline the advantages and disadvantages of demand-side policies used in Japan.

2 responses so far

Jan 28 2010

The best Econ rap… EVER!!

Econstories.tv – A new resource for Econ teachers and students, from Russ Roberts and John Papola

The long awaited rap video from George Mason University’s Russ Roberts featuring the theories of John Maynard Keynes and F. A. Hayek has been released at last!

We’ve heard some decent Econ raps before (remember “Demand, Supply” by Rhythm, Rhyme, Results?) But this song covers all bases in the predominant macroeconomic schools of thought. Keynes and Hayek are brought back to life and their theories pitted against one another in an all out liquor fueled debate on the streets of New York City.

The video was just released this week. It is packed full of theory from the Classical, supply-side school of macroeconomics (represented by Hayek) and the demand-side school (represented, of course, by Keynes). The video includes cameos from Fed chairman Ben Bernanke and Treasury Secretary Tim Geithner, whose role as bartenders filling Keynes glass reflects their role in the real economy at keeping the money supply and government spending at high levels, fueling economic booms and the eventual busts that result.

Stay tuned to this blog for more feedback on the video, including some graphical analysis and discussion questions for Macro teachers to use in class!

2 responses so far

Dec 28 2009

Keynesian/Classical debate enters the realm of hip hop

Keynes vs. Hayek: Late Economists Hip-Hop Legacy | PBS NewsHour | Dec. 16, 2009 | PBS.

A major theme of both the AP and IB Economics courses is the long-running debate between the Keynesian, demand-side theories of macroeconomic policy and those of the Classical, supply-side school. Today’s “Great Recession” has revived this debate, which itself dates back to the Great Depression of the 1930′s, when an Englishman and an Austrian could be found at the ideological centers of two different philosophies of the role government should play in the macroeconomy.

John Maynard Keynes and Friedrich Hayek were close friends whose views on government’s role differed greatly. Hayek was a classical, laissez faire libertarian who believed that any intervention by government in a nation’s economy disrupted the efficient functioning of the free market and threatened to stifle private enterprise. Keynes, the father, of course, of modern Keynesian economics, believed that free markets left unchecked were vulnerable to the volotile animal spirits of investors and speculators whose often irrational behaviors could create externalities such as unemployment and credit crunches, thereby harming society as a whole.

Paul Solman of PBS (who I recently met at an Economics teachers conference in Washington DC) interviews a modern Keynesian, Robert Skidelsky (Keynes’ biographer) and a neo-classical economist, Russ Roberts (who I also recently met in Richmond, VA).

2 responses so far

Dec 01 2009

Economic growth, the Chinese way

YouTube - Chinas empty city – 10 Nov 09.

My buddy living in Shanghai posted this video to his Facebook profile today. It demonstrates how misaligned incentives in China lead local government officials to launch massive government infrastructure projects, all with the goal of meeting the growth targets handed down from Beijing.

Building roads to nowhere and cities that stand empty certainly creates jobs and new spending by the workers employed in their construction, so in that regard at least one goal of such projects is achieved. But whether or not all growth is good growth depends on whether efficiency in the economy is increase or decreased as a result of the growth strategies used.

Hundreds of billions of dollars worth of resources in China are currently being allocated by the government in Beijing towards massive public works projects such as this sparkling new city in remote Inner Mongolia. But it seems that government plans don’t always fall in line with the wishes of the nation’s people. A wise man once said, “build it… and they will come.” Apparently in China, that’s not always true.

I happen to have traveled in Inner Mongolia a few years ago with a group of students from my school in Shanghai. It was a sad thing in my opinion to witness the rampant development of the once pristine and culturally rich Inner Mongolian steppes. Ethnic Mongolians had been put on large reservations (not unlike the Native American people 150 years ago) and turned into tourist attractions. The cities were populated almost entirely with ethnic Han Chinese, there for the purpose of building more new cities, mining raw materials, and selling them to the rest of China’s industries.

Fiscal policy (the use of government spending and taxes to stimulate or reduce the overall level of demand in an economy) is a powerful tool for achieving the macroeconomic goals of full-employment, economic growth and price level stability. When used effectively, government spending can also improve efficiency in an economy by allocating society’s scarce resources towards socially and economically valuable projects. In China, it appears, the government’s incentives are aimed more towards pleasing the higher ups and continuing to inflate the speculative  bubble in real estate that has almost certainly formed, rather than pursuing socially desirable and allocatively efficient projects that actually help the Chinese people. Damn shame!

Discussion Questions:

  1. What type of fiscal policy is the government in China pursuing? Expansionary or contractionary? What is the difference?
  2. Why is government spending sometimes less efficient than private sector spending?
  3. What would have been an alternative policy to allocating over $220 billion of public money into infrastructure projects that may have resulted in a more efficient allocation of China’s resources than projects such as the “empty city” in the video above?

4 responses so far

Sep 29 2009

China’s “visible hand” clamps down on rising prices

This article was originally posted on September 19, 2007

FT.com / Asia-Pacific / China – China freezes government-set prices

Here’s a great article for both AP and IB students to pay attention to. The Chinese government is responding to rising prices at home by resorting to some good old fashioned “iron fist” measures, namely price controls on a wide range of products. For the rest of this year, prices on certain goods and services will not be permitted to rise, OR ELSE! (what? we don’t want to know!)

China has begun to enforce a freeze on all government-controlled prices in a sign of the central government’s alarm about rising popular anger over inflation, now at the highest rate in over a decade.The order freezes a vast array of prices still under the control of governments in China, ranging from oil, electricity and water, to the cost of parking and park entrance fees.

I find the following statement interesting:

“Any unauthorised price rises are strictly forbidden…and in principle, there will be no new price-raising measures this year,” the ministries’ announcement said. (italics added)

How strange is it that the government’s announcement pointed out that the freeze on prices is only in principle? Could this be the government’s attempt to placate a public that’s grown angry at their weakening purchasing power? Does this mean that if prices actually do go up, the government can just say, “Hey, at least we tried!” Looks like the old communist mentality has softened a bit in the era of market reforms!

So what’s the source of all these rising prices? Well, food plays a big role, thanks to a couple of factors:

The sharp spike in inflation is largely due to higher food prices, because of a shortage of pigs after a disease killed millions late last year and earlier in 2007, and the rising cost of feed, a global
phenomenon.

The China of today is very different from that of 20 or 30 years ago, when the government played a much larger role in the economy. Unleashing the beast of the free market in the early 80′s may have meant the government would have to loosen its grip in situations such as today’s inflation, and let the free market adjust on its own.

Economists said the price freeze is the kind of administrative measure redolent of China’s former planned economy, but it may be less effective in China today.

“They will not be able to control the price of everything,” said Chen Xingdong, of BNP Parisbas in Beijing.

Perhaps that’s for the better.

Discussion Questions:

  1. Why might the government’s price controls actually make the matter worse for the average Chinese?
  2. If the government were to take a “laissez faire” approach to the problems faced by China, how might the free market resolve them on its own? Any ideas?

18 responses so far

Sep 14 2009

Jobless Growth? How could this be?

Economic Growth Yet to Hit Job Market – washingtonpost.com

In AP and IB Economics, we understand the importance of macroeconomics to policymakers, whose primary macroeconomic goal is growth. Economic Growth, defined as an increase in a nation’s total output of goods and service (and therefore the national income), is desidred not only for the sake of growth itself (producing more stuff requires more resources, and may not necessarily make the average citizen better off), rather growth is needed in order to achieve full-employment of a nation’s labor force.

Growth is good. This tenet of economics is rooted in two basic observations: 1. Growth leads to an improvement in the average standard living of a nation’s people, and 2. Growth is needed to employ the growing workforce of a nation experiencing population growth and immigration.

America’s work force is a diverse group of people of all skill levels. 150 million strong, the nation’s workforce requires a healthy national economy with strong investment and consumption to maintain enough jobs to keep unemployment low.   In the last two years, however, the prospect of employment in America has diminished as the number of people out of work has grown to nearly 15 million.

Involuntary unemployment is perhaps the most serious cost of an economic slowdown. A willing and able worker (or 15 million of them!), skilled in mind and body, unable to find prouductive work, represents a monumental failure of a nation’s economy. Policies aimed at promoting growth are in fact aimed at creating employment.

The costs of unemployment affect not only the unlucky  individuals who have have lost their job. Social costs include increased crime and poverty, psychological costs include stress, anxiety, loss of self-image and depression. The economic costs are myriad. Unemployed workers become dependent on the rest of society for support, in one way or another. Benefits for the unemployed payed by the government require greater budget deficits or increased tax burden on the employed. The large pool of jobless citizens seeking work puts downward pressure on the wages of those still working, as employers find it difficult to keep paying high wages while demand for their products has fallen and millions of job seekers are willing to work for less.

The families and friends to whom unemployed workers turn for help find their already stretched incomes spread even thinner. Without steady incomes, the unemployed consume less, putting further strain on an already depressed economy. Deflation can result from unemployment, which can lead to futher layoffs by pessimistic firms, excacerbating the situation and plunging the economy into what’s known as a deflationary spiral.

For all the reasons above, policymakers strive to promote growth. When monetary policy fails to incite spending, the government must pick up the slack, hence the stimulus package so discussed in America today. China’s stimulus of over $500 billion (twice that of the US, as a percentage of its GDP) has had a positive effect on both GDP and the job market.

Employment levels in China began to recover over the past three months in the latest evidence of the rapid rebound in the economy from the international financial crisis as a result of heavy public investment.

Yin Weimin, China’s labour minister, said there had been a modest increase in the number of jobs in the economy during June, July and August, reversing the sharp slump in employment which began last October.

America’s stimlus has also begun to restore growth, but the rise in employment has so far not occured:

Despite an emerging economic expansion, businesses were sufficiently skittish about the future that the job market continued its long, steep decline in August, according to a new government report Friday. The unemployment rate rose to 9.7 percent, from 9.4 percent, as employers shed jobs for the 20th straight month, the Labor Department said.

“Our clients tell us they will not hire in anticipation

of a recovery, but will wait until they see it,” said Jonas Prising, an executive vice president at Manpower, the giant employment services firm. “In a normal recession, people would now start to feel more comfortable and start hiring, but nobody is doing that today. They’ll do it when they see real orders and real business.”

The “silver lining” of the latest unemployment figures is hardly encouraging. The rise in unemployment is not as sharp as over most of the last year. In other words, workers are definitely worse off, but not as badly as they could have been if things were as dismal as they were earlier this year.

While the unemployment rate, as seen on the graph to the right, has risen almost every month since August of 2008, the rate at which the rate has increased has begun to slow. In other words, the economy is probably close to “bottoming out”.

The tally of lost jobs now stands at 6.9 million since the beginning of the recession in December 2007. But the rate of job losses has been declining, if haltingly, since winter. The 216,000 jobs eliminated in August is down from 276,000 cut in July and a peak of 741,000 lost in January.

Here’s what I find most interesting from in the current data. The unemployment rate’s recent rise may actually be a sign that the economy is beginning to recover. Recovery means growth in output, which should mean less unemployment. However, if workers who have been unemployed for a long time, and have therefore stop seeking employment suddenly feel more optimistic about the prospects of getting a job and begin seeking work again, then the nation’s unemployment rate actually rises! How’s that for “silver lining”? The 216,000 additional people added to the list of unemployed may have already been out of work but since they were notactively seeking employment they were not included in last month’s data.

The tricky thing about macroeconomic policy is this:  Monetary and fiscal policies can put billions of dollars into the nation’s banks and households’ and firms’ pockets through tax breaks, government bailouts, subsidies, infrastructure spending and “troubled asset swaps”… but all the money and income in the world will not lead the nation towards full-employment unless the nation’s consumers and producers feel confident. I teach my students that national income is made up of the sum of wages, interest, rent and profit; its spending consists of consumption, investment, government spending and net exports… but without the “big C” of confidence, expansionary policies aimed at increasing employment will come to nought. Confidence, according to John Maynard Keynes, is an animal spirit, a trait of humans beyond the assumption of rational behavior. Until confidence is restored, America’s output and employment levels will remain low.

No responses yet

Aug 26 2009

Inflation: a threat to fear now or a distant concern?

Fidelity Investments – Inflation: A Threat or Not? by Dirk Hofschire

I was surprised to receive an email from the company that manages my personal investments directing me to an article that I would be able to use in class. But this analysis by a vice president of Fidelity Investments offers and excellent, concise examination of the threat posed by inflation in America today. I will use excerpts from the article and present the ideas in a graphical form to help students better understand the situation faced by the US as it struggles to emerge from its deep recession.

Hofschire sets out to answer four questions about inflation:

1. Is inflation accelerating?
2. Why is higher inflation expected?
3. Why hasn’t inflation occurred yet?
4. When will inflation return?
5. How high will inflation go?

1. Is in flation accellerating:

In short, NO.

In June, the U.S. consumer price index (CPI) declined 1.2% (on a year-over-year basis), representing the biggest fall in prices since 1950.1 Much of the decline is attributable to the steep drop in energy prices over the past year, which may reverse itself in the second half of 2009 if crude-oil prices remain near current levels. However, core CPI—which excludes food and energy—was less than 1.8% in June, demonstrating little inflationary pressure in general

A combination of weak aggregate demand and low resource costs for firms has kept price levels down.  While total spending has falling (leftward shift of AD), firms’ costs of production have fallen (rightward shift of AS). Since total output fell we can see that national income (Y) is less in 2009 than in 2008. Since price level has fallen, we can see deflation.

Diagram 1:

25 8 blog post graphs_1

2. Why is higher inflation expected?

With little evidence of economic strength or cost-push inflation today, the concern now is that the monetarist economic view of the world sees inflation clouds on the horizon. The godfather of modern monetarist economic thought, Milton Friedman, once stated, “Inflation is always and everywhere a monetary phenomenon.” What Friedman meant was that money—specifically changes in the supply and use of currency—was the primary driver for changes to price levels in an economy. Friedman informally defined inflation as “too much money chasing too few goods and services.” As a result, an excessive increase in the amount or use of money relative to economic output is the textbook prescription for inflation.

The inflation described above, and feared by Friedman and today’s monetarists is not of the cost-push type, rather the demand-pull variety. As the vast quantities of money injected by the US Fed work their way through the banking system and into the pockets of consumers and the hands of firm managers, eventually demand for America’s goods and services will rise. But in the current recession, the production of those goods and services has stagnated, meaning that once all this money starts getting spent, the competition among buyers for the limited output of producers will drive prices up.

Diagram 2:

25 8 blog post graphs_2

3. Why hasn’t inflation occurred yet?

…there remains considerable downward pressure on prices still in place, due to growing slack in the economy (i.e. underutilized resources, such as labor) and continued deleveraging by consumers and financial firms with heavy debt loads. With the unemployment rate at its highest level in 26 years and consumers saving more and spending less, there is little upward pressure on wages or prices for consumer goods.

Yes, the money supply has increased, which according to our answer to number 2 should lead to inflation. But not if the new money isn’t being spent! Banks with money from the Fed are holding onto their excess reserves instead of loaning them out, due to a prevailing lack of confidence in borrowers ability to repay loans during these hard economic times. If all the money the Central Bank is injecting in the economy is sitting idle, and resources such as labor, land and capital are under-employed, then there is little fear of cost-push nor demand-pull inflation.  Diagram 1 illustrates why inflation hasn’t occured yet.

The excess bank reserves thus represent both the potential for future inflation as well as the explanation for why rapid money growth has yet to create current inflation.

In short, money must be spent to drive inflation up. When households prefer savings to consumption and banks prefer liquidity to risk, inflation is only a distant fear.

4. When will inflation return?

Interestingly, the answer to this question can be summed up as: “hopefully sooner rather than later”. Despite popular belief, some inflation is considered a positive sign of economic growth. Just as deflation is the purveyor of doom and gloom (unemployment, uncertainty, low consumer and investor confidence, credit crunch, etc) inflation is a sign of health returning to the economy (improved confidence, rising employment, looser credit markets, expectations of future growth). Central Bankers like Bernanke will surely be showered with praise, while congressman will be quick to give credit to the fiscal stimulus package.

Whether the pick-up in money velocity leads to significantly higher inflation depends on how quickly the Fed pulls the reins back on the extraordinary credit it is currently providing. In theory, the Fed can take actions to reduce the size of its balance sheet and move back to a more appropriate level of money. In practice, due to the unprecedented expansion in the Fed’s balance sheet, this will be a challenge.

Just as it was the Fed”s and government’s job to get the party started through expansionary monetary and fiscal policies, it is equally important for policymakers to calm the party down should the level of inflation begin to rise.

Diagram 3:

25 8 blog post graphs_3

5. How high will inflation go?

Given the high level of slack (i.e. underutilized resources) likely to remain in the economy during the next two years, there also could be offsetting deflationary pressures lingering in the system. For example, the unemployment rate is expected to rise above 10% and not peak until sometime in 2010. Industrial capacity utilization rates are at their lowest level on record, which means a lot of unused capacity in the manufacturing sector. This slack must tighten considerably before upward pressure is placed on wages and other prices.

As a result of this downward pressure on wages, which remain the largest expense for corporations, it would appear a 1970s-style, double-digit inflation outburst remains unlikely in the short to medium term. Average weekly earnings for U.S. workers rose more than 7% annually during the period from 1975-1981 in which consumer price inflation averaged more than 9% and peaked at 14% in 1980.5 It is hard to foresee wage gains of that magnitude reinforcing inflation pressures during the next couple of years.

The 1970′s was a period of high inflation in the US, caused primarily by higher costs for firms rather than increasing demand for output. This “cost-push” inflation is unlikely to occur in today’s climate due to the high levels of unemployment and under-employment of labor, land and capital resources. This does not mean inflation won’t happen, just that it’s unlikely to look like the cost-push variety of the 1970′s.

Diagram 4:

25 8 blog post graphs_4

2 responses so far

May 13 2009

Deflation: why lower prices spell doom for any economy!

The Fed should focus on deflation | The greater of two evils | The Economist

Deflation: a decrease in the general price level of goods and services of an economy. Sounds great, right? Lower prices mean the purchasing power of our income increases, making the “average” person richer! On the surface, it could be concluded that deflation may actually be a good thing. And in some cases, it is!

If prices of goods are falling because of major technological advances (think of the price of cell phones and laptop computers over the last 20 years) or because of massive improvements in the productivity of labor and capital (think of the price of manufactured consumer goods during the Industrial Revolution), then deflation could be considered a sign of healthy economic growth. Put in terms an IB or AP Economics student should understand, a fall in prices caused by an increase in a nation’s aggregate supply is good, since it is accompanied by greater levels of employment and higher real incomes. But if the fall in prices is caused by a decline in spending in the economy (in other words, by a decrease in aggregate demand), the consequences can be catastrophic.

It just so happens that the United States, Great Britain, and my own home of Switzerland are all faced with demand-deficient deflation at this very moment. I’ll allow the Economist to elaborate:

…With unemployment nearing 9% (in the United States), economic output is further below the economy’s potential than at any time since 1982. This gap is likely to widen. House prices are not part of America’s inflation index but their decline is forcing households to reduce debt , which could subdue economic growth for years. As workers compete for scarce jobs and firms underbid each other for sales, wages and prices will come under pressure.

So far, expectations of inflation remain stable: that sentiment is itself a welcome bulwark against deflation. But pay freezes and wage cuts may soon change people’s minds. In one poll, more than a third of respondents said they or someone in their household had suffered a cut in pay or hours…

Does this matter? If prices are falling because of advancing productivity, as at the end of the 19th century, it is a sign of progress, not economic collapse. Today, though, deflation is more likely to resemble the malign 1930s sort than that earlier benign variety, because demand is weak and households and firms are burdened by debt. In deflation the nominal value of debts remains fixed even as nominal wages, prices and profits fall. Real debt burdens therefore rise, causing borrowers to cut spending to service their debts or to default. That undermines the financial system and deepens the recession.

From 1929 to 1933 prices fell by 27%. This time central banks are on the case. In America, Britain, Japan and Switzerland they have pushed short-term interest rates to, or close to, zero…

…inflation is easier to put right than deflation. A central bank can raise interest rates as high as it wants to suppress inflation, but it cannot cut nominal rates below zero… In the worst case, rising debts and defaults depress growth, poisoning the economy by deepening deflation and pressing real interest rates higher….Given the choice, erring on the side of inflation would be less catastrophic than erring on the side of deflation.

Discussion Questions:

  1. Deflation poses several threats to an economy that is otherwise fundamentally healthy, such as the United States’. What are some the threats posed by deflation?
  2. The expectation of future deflation can have as equally devastating effect. Why is this?
  3. What evidence does the article put forth that an economy experiencing deflation may eventually “self-correct”, meaning return to the full employment level of output in the long-run?
  4. Why don’t governments and central banks just sit back and let the economy self-correct? In other words, why are fiscal and monetary policies being used so aggressively by the US, Great Britain and Switzerland during this economic crisis?

Deflation or Inflation:Watch the video below, see if gives you any clues as to the causes and effects of deflation. What do you think John Maynard Keynes would say in response to the deflationary fears expressed in the Economist article?

60 responses so far

Apr 17 2009

The potency of government spending and taxation.

Economic View – A Dose of Skepticism on Government Spending – NYTimes.com

We all understand that fiscal stimulus is one of the tools that governments can use to increase the level of economic activity during a recession. The fiscal medicine can be delivered in one of two ways. The government can tweak the tax systems to boost incentives to spend and work or it can increase government spending. One tool that we can use to evaluate the merits of these two policies is to compare the relative multipliers that relate to government spending and taxation.

The multiplier is the key component of Keynesian theory and shows the possibility of a given increase in injections, e.g. government spending, investment and exports, increasing aggregate demand by more than the initial value. This logic fits with our understanding of the circular flow where say increased government spending will lead to increased derived demand for other products, and increased demand for labour. Workers will spend additional wages on other products which leads to further increases in aggregate demand. This flow on effect can be diluted by withdrawals from the system such as taxation or savings.

Greg Mankiw wrote an excellent analysis of this issue in the New York Times in Janurary. “A dose of skepticism on government spending”

An essential skill for IB and AP Economics students is to be able to evaluate the effectiveness of Keynesian  demand-side policies as well as classical supply-side policies, both fiscal and monetary. An understanding of multipliers can improve a student’s ability to evaluate fiscal policy. Greg writes:

“Economics textbooks, including Mr. Samuelson’s and my own more recent contribution, teach that each dollar of government spending can increase the nation’s gross domestic product by more than a dollar. When higher government spending increases G.D.P., consumers respond to the extra income they earn by spending more themselves. Higher consumer spending expands aggregate demand further, raising the G.D.P. yet again. And so on. This positive feedback loop is called the multiplier effect.

In practice, however, the multiplier for government spending is not very large. The best evidence comes from a recent study by Valerie A. Ramey, an economist at the University of California, San Diego. Based on the United States’ historical record, Professor Ramey estimates that each dollar of government spending increases the G.D.P. by only 1.4 dollars. So, by doing the math, we find that when the G.D.P. expands, less than a third of the increase takes the form of private consumption and investment.”

This low multiplier effect implies that any government spending must be used in an effective manner where it will increase the long-term productivity of the country. During a “jobs think-tank” recently in New Zealand, a media release announced an idea of the government spending a vast sum of money to develop a walking track from one end of the country to the other. Would this lead to increased tourism? How much money would these hiking visitors spend? Would it create more jobs?

Should we therefore expect that tax cuts will lead to a greater increase in GDP through the feedback loop compared to government spending? Well, we have to remember that not all tax cuts will be spent immediately, according to the marginal propensity to consume. In a recession some workers will be pessimistic about the future and save the money. Will tax cuts compensate workers who are working shorter hours? Greg suggests that tax cuts might actually be more potent than government spending according to current research.

“Textbook Keynesian theory says that tax cuts are less potent than spending increases for stimulating an economy. When the government spends a dollar, the dollar is spent. When the government gives a household a dollar back in taxes, the dollar might be saved, which does not add to aggregate demand.

The evidence, however, is hard to square with the theory. A recent study by Christina D. Romer and David H. Romer, then economists at the University of California, Berkeley, finds that a dollar of tax cuts raises the G.D.P. by about $3. According to the Romers, the multiplier for tax cuts is more than twice what Professor Ramey finds for spending increases.

Why this is so remains a puzzle. One can easily conjecture about what the textbook theory leaves out, but it will take more research to sort things out. And whether these results based on historical data apply to our current extraordinary circumstances is open to debate.”

So the current research indicates that one-dollar of tax cuts can increase G.D.P by $3 compared to an additional dollar of government spending increasing GDP by $1.40. But why is there such a large difference? Is this related to the arguments about the efficiency of increased government spending? The verdict is still out and we may need to wait till the next global recession to find out.

Below is a picture of the aptly named Bridge to Nowhere located in the central North Island of New Zealand. It was built by the government in a spending splurge in the 1936 to open up land in the area. The land is now no longer fertile or accessible and all access to the area is cut off except for this concrete relic. The area is now popular with trampers.

Discussion Questions:

  1. How do economists calculate the multiplier?
  2. What are leakages from the circular flow that reduce the multiplier effect?
  3. Explain the link between the accelerator model and the multiplier.
  4. What would multipliers for other injections such as export receipts or investment look like? Would they be higher or lower than multipliers for taxation or government spending?
  5. Evaluate the effectiveness of fiscal stimulus to increase the level of economic activity.

114 responses so far

Mar 03 2009

Recession’s effects on small vs. large companies: some evidence in support of the Classical view of self-correction

Why Are Large Companies Losing More Jobs Than Small Ones? – TIME

This is a fascinating, short article from TIME. Before reading it, see if you can answer the multiple choice question below:

Q: Why do small companies lay off proportionately fewer workers during a recession than large companies?

A) Because small firms are less likely to be in the industries hardest hit by a recession (such as manufacturing)?
B) Because small firms are less focused on maintaining profits to satisfy greedy shareholders?
C) Because small companies are able to hang on to employees and even hire new ones during a recession because of all the talent being laid off by big firms.

Still thinking? Well, it’s likely that all three are true to some extent. But it’s the third one that seems most intriguing as a student of economics. Here’s what the article says:

…small companies hire disproportionately more early on in an economic recovery because it’s easy for these firms to find good workers while unemployment is still high—and easy for workers to come across small companies since there are so many of them. Once the economy is chugging along at full-steam and the labor market is tight, larger companies regain the advantage, since they’re likely able to offer more money—and poach from smaller outfits.

Seems pretty straight forward, right? Sure, but the fact that small firms are likely to hire when unemployment is high supports one side in a long-running economic debate over the economy’s ability to “self-correct” in times of recession.

As any student of Macroeconomics learns early on, there are two dominant theories of macroeconomics, both which are represented in the aggregate demand/aggregate supply diagram that we learn and use in AP and IB Economics.

The two models below represent the two opposing views of macroeconomics. First we see the Keynesian model, which shows that when overall demand in an economy falls, unemployment increases drastically and output tanks, plunging the economy into a deep recession. This is primarily because of the “inflexible” nature of wages, meaning that even when unemployment rises, workers are unwilling to accept lower wages and firms therefore are unwilling to hire more workers.

According to Keynesians, the only way to get the economy out of the recession is by increasing overall demand through heavy doses of government spending (case in point, the $775 billion stimulus in the US).

Next is the Classical AD/AS model with a vertical long-run aggregate supply curve. The implication of the vertical AS curve is that regardless of the level of overall demand in the economy, output will always return to the full-employment level, and thus unemployment will always return to its natural level. The major assumption underlying the Classical model is that wages are in fact flexible in times of recession. As unemployment rises, workers will accept lower wages since they’d rather be making less than making nothing at all. As wages fall firms will begin hiring more workers, increasing overall output and decreasing unemployment until full-employment output is restored.

The implication of the model on the right is that government is NOT needed to get the economy out of a recession, because it will self-correct due to the new hiring and production by firms in response to falling wages in the labor market.

The reason this article stood out to me was that it seems to offer some evidence in support of the flexible-wage, Classical model of macroeconomic self-correction. There has been surprisingly little talk among news anchors, pundits and politicians about the likelihood of the US or ANY economy suffering in the global slowdown “self-correcting” as the Classical model would suggest it should. But the fact that small businesses are less likely to lay off workers in a recession and more likely to begin hiring them due to the large number of workers being laid of by big companies offers at least an inkling of evidence in support of the Classical model of flexible wages and macroeconomic self-correction.

Discussion Questions:

  1. Why is laying off workers the first thing big companies do when faced with falling demand for their products? Why don’t they shut down factories instead?
  2. What pressures does a publicly traded company (one that sells stocks to investors) face in times of recession that a small, privately owned business does not?
  3. When the global recession is finally over, do you think more people or fewer people will be working for small companies (less than 50 people) than before the recession? What would you rather work for, a small firm or a large one? Why?

230 responses so far

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