The new Japanese government under Shinzo Abe, which took office on 26 December 2012, has been pursuing a policy of weakening the yen. Using a combination of low interest rates, quantitative easing, expansionary fiscal policy and a declared aim of depreciation, the government has succeeded in driving down the value of the yen.
Since mid-November last year, the yen has depreciated by 28% against the dollar, 30% against the euro and 21% against sterling. The effective exchange rate index has fallen by 22% (see first diagram below: click here for a PowerPoint of the diagram).
But will this depreciation succeed in stimulating the Japanese economy and will it improve the balance of trade? The hope is that the falling yen will boost export sales by making them cheaper abroad, and will reduce the demand for imports by making them more expensive in Japan. The balance of trade will thereby improve and higher exports (an injection) and lower imports (a withdrawal) will stimulate aggregate demand and economic growth.
Traditionally Japan has run balance of trade surpluses, but since July 2012, it has been running monthly deficits – the longest run of deficits since 1980. But depreciation cannot be expected to turn this position around immediately. Indeed, theory suggests that the balance of trade is likely to deteriorate before it improves. This is known as the J-curve effect and is illustrated in the second diagram below. As page 768 of Economics, 8th edition states:
At first a devaluation or depreciation might make a current account deficit worse: the J-curve effect. The price elasticities of demand for imports and exports may be low in the short run (see Case Study 25.1 in MyEconLab). Directly after devaluation or depreciation, few extra exports may be sold, and more will have to be paid for imports that do not have immediate substitutes. There is thus an initial deterioration in the balance of trade before it eventually improves. In Figure 25.12 [the second diagram], devaluation takes place at time t1. As you can see, the diagram has a J shape.
Evidence suggests that the first part of the ‘J’ has been experienced in Japan: Japan’s balance of trade has deteriorated. But there is debate over whether the balance of trade will now start to improve. As the article by James Saft states:
But a look at the actual data shows Japanese companies, like British ones during a similar bout of currency weakness in 2008, appear to be more eager to use a newly competitive currency to pad profits through higher margins rather than higher export volumes. Thus far, Japanese exporters appear to be doing just that. Despite yen falls the price of Japanese exports in local currency has barely budged.
“Japanese companies have not actually cut the foreign currency prices of their exports. Just as with the UK exporters, the Japanese have chosen to hold foreign prices constant, maintain market share, and increase the yen value and thus the yen profit associated with yen depreciation,” UBS economist Paul Donovan writes in a note to clients.
The extra profits earned by Japanese companies from export sales may be stockpiled or paid out in dividends rather than reinvested. And what investment does take place may be abroad rather than in Japan. The net effect may be very little stimulus to the Japanese economy.
As stated by Saft above, the UK had a similar experience in the period 2007–9, when sterling depreciated some 27% (see the second diagram). The balance of trade improved very little and UK companies generally priced goods to markets abroad rather than cutting overseas prices.
But times were different then. The world was plunging into recession. Now global markets are mildly growing or static. Nevertheless, there is a danger that the upward slope of the J-curve in Japan may be pretty flat.
Articles
Weak yen a boon for investors, not Japan Reuters, James Saft (14/5/13)
Japan’s Trade Data Suggest Even Lower Yen Needed Wall Street Journal, Nick Hastings (22/5/13)
2 Misunderstandings About Japanese Trade Seeking Alpha, Marc Chandler (22/5/13)
Japanese trade deficit widens Financial Times, Ben McLannahan (22/5/13)
Data
BIS effective exchange rate indices Bank for International Settlements
Japan’s balance of trade Trading Economics
UK Trade, March 2013 ONS
Questions
- Explain the J-curve effect.
- Why is there some doubt about whether the Japanese balance of trade will improve significantly?
- What will be the consequences for Japanese growth?
- If foreign currency prices of Japanese exports do not change, what will determine the amount that Japan exports?
- What other measures is the Japanese government taking to stimulate the economy? What will determine the size of the multiplier effects of these measures?
- Using data from the ONS plot the UK’s quarterly balance of trade figures from 2007 to the present day. Explain the pattern that emerges.
High levels of government debt and the adverse effect this has on the economy has been a key influencing factor in the fiscal consolidation efforts across the world. A key factor providing evidence in support of the connection between high government debts and low economic growth was a paper by two Harvard economists. However, the data used in their research has been called into question.
As we saw in a previous post, It could be you, Carmen Reinhart and Kenneth Rogoff presented a paper back in January 2010. Their research suggested that when a country’s debt increases above 90% of GDP, economic growth will slow considerably. (Click here for a PowerPoint of the above chart.) As you might expect, given the timing of this research, policymakers were intrigued. For those governments in favour of cuts in government spending and increases in taxation to bring the government debt down, this research was dynamite. It seemed to provide the evidence needed to confirm that if left to grow, government debt will have a significantly adverse effect on growth. Here was evidence in favour of austerity.
But, did a simple error create misleading information? A student at the University of Massachusetts Amherst was trying to replicate the results found by Reinhart and Rogoff, but was unable to do so. Thomas Herndon contacted the Harvard professors and they sent him the spreadsheets they had used in their calculations. Looking through it, an error in calculating the average GDP was spotted. However, the student and his supervisors also engaged in further research and came across other inconsistencies. This led to a draft working paper being published in April. The paper did find the same correlation between high debt levels and low growth, but the outstanding results found by Reinhart and Rogoff disappeared. Responding to the error, the Harvard professors said:
We are grateful to Herndon et al. for the careful attention to our original Growth in a Time of Debt AER paper and for pointing out an important correction to Figure 2 of that paper. It is sobering that such an error slipped into one of our papers despite our best efforts to be consistently careful. We will redouble our efforts to avoid such errors in the future. We do not, however, believe this regrettable slip affects in any significant way the central message of the paper or that in our subsequent work.
So, how might this correction and the implications affect government policy? Are we likely to see a reversal in austerity measures? Only time will tell.
Articles
Seminal economic paper on debt draws criticism Wall Street Journal, Brenda Cronin (16/4/13)
Reinhart, Rogoff … and Herndon: The student who caught out the Profs BBC News, Ruth Alexander (20/4/13)
Reinhart and Rogoff publish formal correction Financial Times, Robin Harding (8/5/13)
The 90% question The Economist (20/4/13)
Reinhart and Rogoff correct austerity research error BBC News (9/5/13)
Harvard’s Reinhart and Rogoff publish formal collection CNBC, Robin Harding (9/5/13)
Rogoff and Reinhart should show some remorse and reconsider austerity The Guardian, Heidi Moore (26/4/13)
The buck does not stop with Reinhart and Rogoff Financial Times, Lawrence Summers (5/5/13)
Meet Carmen Reinhart and Kenneth Rogoff, the Harvard professors who thought they had austerity licked – and Thomas Herndon, the student who proved them wrong Independent, Tim Walker (22/4/13)
Papers
Growth in a time of debt American Economic Review (May 2010)
Does high public debt consistently stifle economic growth? A critique of Reinhart and Rogoff Political Economy Research Institute, Herndon, Ash and Pollin (April 2013)
Questions
- How do high government debts arise?
- In order to reduce government debts, cuts in government spending and increases in taxation are advocated. How does theory suggest that these changes in fiscal policy will affect economic growth?
- What are the arguments (a) in favour of and (b) against austerity measures?
- How might the correction made by Reinhart and Rogoff affect policymakers and their austerity plans?
- What are the key messages from Reinhart and Rogoff’s paper?
Interest rates have, for some years, been the main tool of monetary policy and of steering the macroeconomy. Across the world interest rates were lowered, in many cases to record lows, as a means of stimulating economic growth. Interest rates in the UK have been at 0.5% since March 2009 and on 2nd May 2013, the ECB matched this low rate, having cut its main interest rate from 0.75%. (Click here for a PowerPoint of the chart.)
Low interest rates reduce the cost of borrowing for both firms and consumers and this in turn encourages investment and can boost consumer expenditure. After all, when you borrow money, you do it to spend! Lower interest rates will also reduce the return on savings, again encouraging spending and for those on variable rate mortgages, mortgage payments will fall, increasing disposable income. However, these above effects are dependent on the banks passing the ECB’s main interest rate on its customers and this is by no means guaranteed.
Following the cut in interest rates, the euro exchange rate fell almost 2 cents against the dollar.
Interest rates in the eurozone have been at 0.75%, but a 0.25 point cut was widely expected, with the ongoing debt crisis in the Eurozone continuing to adversely affect growth and confidence. A lack of trust between banks has also contributed to a lack of lending, especially to small and medium sized enterprises. The ECB has injected money into financial institutions with the aim of stimulating lending, but in many cases, banks have simply placed this extra money back with the ECB, rather than lending it to other banks or customers. The fear is that those they lend to will be unable to repay the money. In response to this, there have been suggestions of interest rates becoming negative – that is, if banks want to hold their money with the ECB they will be charged to do it. Again, the idea is to encourage banks to lend their money instead.
Small and medium sized businesses have been described as the engine of growth, but it is these businesses who have been the least able to obtain finance. Without it, they have been unable to grow and this has held back the economic recovery. Indeed, GDP in the Eurozone has now fallen for five consecutive quarters, thus prompting the latest interest rate cut. A key question, however, will be how effective this quarter of a percent cut will be. If banks were unwilling to lend and firms unwilling to invest at 0.75%, will they be more inclined at 0.5%? The change is small and many suggest that it is not enough to make much of a difference. David Brown of New View Economics said:
The ECB rate cut is no surprise as it was well flagged by Draghi at last month’s meeting. Is it enough? No. The marginal effect of the cut is very limited, but at least it should have some symbolic rallying effect on economic confidence.
This was supported by Howard Archer at HIS Global Insight, who added:
Admittedly, it is unlikely that the trimming of interest rates from 0.75% to 0.5% will have a major growth impact, especially given fragmented credit markets, but any potential help to the eurozone economy in its current state is worthwhile.
Inflation in the eurozone is only at 1.2%, which is significantly below the ceiling of 2%, so this did give the ECB scope for the rate to be cut. (Click here for a PowerPoint of the chart.) After all, when interest rates fall, the idea is to boost aggregate demand, but with this, inflation can emerge. Mr Draghi said ‘we will monitor very closely all incoming information, and assess any impact on the outlook for price stability’. The primary objective of the ECB is the control of inflation and so had inflation been somewhat higher, we may have seen a different decision by the ECB. However, even then, 5 consecutive quarters of negative growth is hard to ignore.
So, if these lower interest rates have little effect on stimulating an economic recovery, what about a movement away from austerity? Many have been calling for stimulus in the economy, arguing that the continuing austerity measures are stifling growth. The European Council President urged governments to promote growth and job creation. Referring to this, he said:
Taking these measures is more urgent than anything … After three years of firefights, patience with austerity is wearing understandably thin.
However, Mr. Draghi urged for policymakers to stick with austerity and continue to focus on bringing debt levels down, while finding other ways to stimulate growth, including structural reform. The impact of this latest rate cut will certainly take time to filter through the economy and will very much depend on whether the 0.5% interest rate is passed on to customers, especially small businesses. Confidence and trust within the financial sector is therefore key and it might be that until this emerges, the eurozone itself is unlikely to emerge from its recession.
ECB ready to enter unchartered waters as bank cuts interest rate to fresh low of 0.5pc The Telegraph, Szu Ping Chan (2/5/13)
Draghi urges Eurozone governments to stay the course on austerity Financial Times, Michael Steen (2/5/13)
Eurozone interest rates cut to a record low of 0.5% The Guardian, Heather Stewart (2/5/13)
ECB’s Draghi ‘ready to act if needed’ BBC News (2/5/13)
Eurozone interest rates cut again as ECB matches Bank of England Independent, Russell Lynch (3/5/13)
Margio Draghi urges no let-up in austerity reforms after Eurozone rate cut – as it happened The Guardian, Graeme Wearden (2/5/13)
ECB cuts interest rate to record-low 0.5% in desperate measure to drag Eurozone out of recession Mail Online, Simon Tomlinson and Hugo Duncan (2/5/13)
ECB cuts interest rates, open to further action Reuters, Michael Shields (2/5/13)
Eurozone loosens up austerity, slowly Wall Street Journal (2/5/13)
ECB cuts interest rate, not enough to pull the region out of recession The Economic Times of India (2/5/13)
Euro steady ahead of ECB interest rate announcement Wall Street Journal, Clare Connaghan (2/5/13)
European Central Bank (ECB) cuts interest rates BBC News (2/5/13)
All eyes on ECB as markets expect rate cut Financial Times, Michael Steen (2/5/13)
Questions
- How is a recession defined?
- Using an aggregate demand/aggregate supply diagram, illustrate and explain the impact that this cut in interest rates should have.
- On which factors will the effectiveness of the cut in interest rates depend?
- Using the interest rate and exchange rate transmission mechanisms to help you, show the impact of interest rates on the various components of aggregate demand and thus on national output.
- What would be the potential impact of a negative interest rate?
- Why did the low inflation rate give the ECB scope to cut interest rates?
- What are the arguments for and against austerity measures in the Eurozone, given the 5 consecutive quarters of negative growth?
The latest growth data for the UK is somewhat difficult to interpret. It’s positive, but not that positive. The Conservatives say it shows that the economy is moving in the right direction. Labour suggests it is evidence that the Coalition’s policies are not working. With a return to positive growth, the UK has avoided the triple dip recession and here we take a closer look at the economic performance of other key nations.
In the final quarter of 2012, the US economy grew at 0.4%, but in the 3 months to March 2013, economic growth in America picked up to 2.5%. Consumer spending significantly increased, growing at an annualized rate of 3.2%, according to the Commerce Department. This figure helped boost the growth rate of the US economy, as consumer spending accounts for around two thirds of economic activity.
However, the growth figure was lower than expected, in part due to lower government spending. Furthermore, there are suggestions that the positive consumer spending figures are merely a positive blip and spending will fall as the US economy moves through 2013.
If this does prove to be the case in the USA, it will do little to further boost UK economic growth, which was recorded at 0.3% for the first 3 months of 2013. The Chancellor has said that the growth figures are encouraging and are evidence that the government’s policies are working.
Today’s figures are an encouraging sign the economy is healing … Despite a tough economic backdrop, we are making progress. We all know there are no easy answers to problems built up over many years, and I can’t promise the road ahead will always be smooth, but by continuing to confront our problems head on, Britain is recovering and we are building an economy fit for the future.
While the USA and UK have recorded positive growth, expectations of growth throughout Europe remain uncertain. Spain has revised its forecasts downwards for 2013, expecting the economy to shrink by over 1%. Even after 2013, growth is expected to remain very weak, forecast to be 0.5% in 2014 and 0.9% in 2015. To make matters worse, Spain’s unemployment continues to move in the wrong direction, with data for the first 3 months of 2013, recording an unemployment rate of 27.2% – the highest on record.
However, it’s not just Spanish unemployment that is on the rise. Figures for March show that in France, 3.2 million people were out of work, a 1.2 % rise compared to February. In the UK, 2.56 million people were recorded as unemployed, representing just under 8% of the working population. The German economy continues to outperform its European partners, but eurozone growth continues to look weak for the rest of 2013.
Despite much bad news in Europe, growth in other parts of the world remains buoyant. South Korea has recorded economic growth that is at its highest level in 2 years. Economic growth was just under 1%, but construction and investment both increased, perhaps a sign of an economy starting its recovery.
The Chinese economy has seemed relatively unaffected by the economic downturn, yet its economic growth has slowed. Averaging over 10% per annum for the last decade, the growth for January – March 2013 was only 7.7%. This is a decline on the previous 3 months and is lower than expected. If the Chinese economy does begin to slow (relatively speaking), this could present the global economic recovery with an unwelcome obstacle.
Many Western economies are reliant on exports to boost their growth figures and with such high demand in China, this is a key export market for many countries. If the Chinese economy continues to slow, consumer spending may even fall and this could mean a reduction in Chinese imports: that is, a reduction in other countries’ exports to China. However, for China’s competitors, the news is better, as with China’s move from a low to middle-income country, other countries will now see an opportunity to grasp a competitive advantage in the production of cheaper products. David Rees from Capital Economics said:
Trade data show that Chinese imports of commodities, and industrial metals in particular, have been falling in recent months … That is bad news for those emerging markets in Latin America, the Middle East, and Africa that predominately export commodities to China. It is not all bad news … To the extent that China’s structural slowdown reflects its transition from low to middle-income status, opportunities will present themselves for other EMs as China moves up the value chain. We are particularly upbeat on the manufacturing-based economies of South East Asia, along with Mexico, Poland, and Turkey.
News is better in Japan, where growth forecasts have been raised to 2.9% over the same period and the economy is expected to grow by 1.5% throughout both 2013 and 2014. Furthermore, suggestions that inflation may also reach 0.7% have boosted confidence. This might be the end of Japan’s troubles with deflation.
So, we have something of a mixed picture across the world, although the IMF predicts a global rate of growth of 3.5% for 2013, which would be an improvement on 2012 figures. The following articles consider the global situation.
Spain slashes economic growth forecast Sky News (26/4/13)
UK avoids triple-dip recession with better than expected 0.3% GDP growth The Guardian, Heather Stewart (26/4/13)
US economy grows 2.5% on buoyant consumer spending BBC News (26/4/13)
Poor French and Spanish jobs data but UK economy returns to growth – as it happened The Guardian, Graeme Wearden and Nick Fletcher (25/4/13)
UK economy avoids tiple-dip recession with 0.3pc GDP growth The Telegraph, Szu Ping Chan (25/4/13)
South Korea economic growth hits two year high BBC News (25/4/13)
S. Korea economy grows at the fastest pace in two years Bloomberg, Eunkyung Seo (25/4/13)
Spain revises down its economic forecast BBC News (26/4/13)
US economy sees broad growth Financial Times, Robin Harding (25/4/13)
Germany’s private sector shrinks as Eurozone decline continues – as it happened The Guardian, Graeme Wearden and Nick Fletcher (23/4/13)
China economic growth lower than forecast BBC News (15/4/13)
China’s slowing economy: what you need to know Bloomberg Business Week, Dexter Roberts (25/4/13)
Modest Growth Pickup in 2013, Projects IMF International Monetary Fund (23/1/13)
Questions
- How is economic growth measured?
- What is meant by a triple-dip recession?
- What has caused the small increase in growth in the UK? Do you think this signifies the start of the economic recovery?
- In the USA, what has caused the growth rate to reach 2.5% and why is it lower than expected?
- Why are growth rates in countries across the world relevant for UK forecasts of economic growth?
- Which factors have allowed the Chinese economy to achieve average growth rates above 10% for the past decade?
- Using an AD/AS diagram, illustrate the desired impact of the Coalition’s policies to boost economic growth.
- With unemployment rising in countries like Spain and France, how might Eurozone growth be affected in the coming months?
- Japanese growth is looking positive and inflation is expected to reach about 0.7%. Why is it that Japan has suffered from deflation for so many years and why is this a problem?
An excellent learning exercise for students of economics is to take a journal article that uses data to model the economy and then try to replicate the authors’ results. You may well be given an assignment like this in future years of your degree.
One such exercise is used on the University of Massachusetts Amherst’s doctoral programme in economics. Thomas Herndon is a student on that degree and chose to examine a well-known and highly influential paper, Growth in a Time of Debt by Carmen Reinhart then of the University of Maryland and Kenneth Rogoff of Harvard University and former chief economist of the IMF. Professors Reinhart and Rogoff used new data on 44 countries spanning about 200 years.
A key finding of their paper, published in 2010 in the American Economic Review Papers and Proceedings, is that once a country’s government debt exceeds 90% of GDP, growth rates fall considerably: the median across countries by about 1% and the mean considerably more.
The paper has been hugely influential. It has been used to justify the austerity programmes being pursued in many countries, including the UK and the eurozone. Cutting the government deficit to GDP ratio, and ultimately the government debt to GDP ratio, has been seen as a way of achieving higher growth over the longer term, and justifies the adverse effect on short-term growth from the dampening of aggregate demand.
Well, this seemed an interesting paper for Thomas Herndon to examine, and he was keen to show just how Reinhart and Rogoff’s data led to their conclusions. But try as he might, he could not replicate their results. His initial reaction was to think he had made an error, but each time he checked he came back with the same conclusion: they must have made errors in their calculations.
His supervisor at Amherst, Professor Michael Ash, after Thomas had checked and checked again, realised that something was wrong. He encouraged Thomas to write to Reinhart and Rogoff to request sight of their dataset. They duly obliged and it was then that Thomas spotted various errors. These are explained in the articles below, but the overall effect was to alter the conclusion. Although high debt may undermine growth to some extent, the effect is much less than Reinhart and Rogoff concluded, and there are several exceptions to this rule.
On 15 April 2013, Thomas, along with his supervisor, Michael Ash and his colleague, Robert Pollin, published a response to the Reinhart and Rogoff paper. In the abstract to their paper, Does High Public Debt Consistently Stifle Economic Growth? A Critique of Reinhart and Rogoff they state that:
… coding errors, selective exclusion of available data, and unconventional weighting of summary statistics lead to serious errors that inaccurately represent the relationship between public debt and GDP growth among 20 advanced economies in the post-war period. They find that when properly calculated, the average real GDP growth rate for countries carrying a public-debt-to-GDP ratio of over 90 percent is actually 2.2 percent, not –0:1 percent as published in Reinhart and Rogoff. That is, contrary to RR, average GDP growth at public debt/GDP ratios over 90 percent is not dramatically different than when debt/GDP ratios are lower.
The authors also show how the relationship between public debt and GDP growth varies significantly by time period and country. Overall, the evidence we review contradicts Reinhart and Rogoff’s claim to have identified an important stylized fact, that public debt loads greater than 90 percent of GDP consistently reduce GDP growth.
So could this be you in the future? Will you take a famous paper and, by re-examining and reworking the data, find that its conclusions are wrong? Could you end up changing the world? Exciting stuff!
Podcasts
Austerity: A Spreadsheet Error? BBC, More or Less, Tim Harford (20/4/13)
Austerity justification study ‘inaccurate’ BBC Today Programme, Robert Pollin (18/4/13)
Articles
UMass Student Exposes Serious Flaws in Harvard Economists’ Influential Study The Atlantic Wire, J.K. Trotter (18/4/13)
Shocking Paper Claims That Microsoft Excel Coding Error Is Behind The Reinhart-Rogoff Study On Debt Business Insider, Mike Konczal (16/4/13)
How a student took on eminent economists on debt issue – and won Economic Times of India (19/4/13)
Meet the 28-Year-Old Grad Student Who Just Shook the Global Austerity Movement New York Magazine, Kevin Roose (19/4/13)
An economist’s mea culpa: I relied on Reinhart and Rogoff Confessions of a Supply-Side Liberal blog, Miles Kimball (22/4/13)
The Rogoff-Reinhart data scandal reminds us economists aren’t gods The Guardian, Heidi Moore (18/4/13)
Reinhart, Rogoff… and Herndon: The student who caught out the profs BBC News Magazine, Ruth Alexander (20/4/13)
George Osborne’s case for austerity has just started to wobble The Guardian, Polly Toynbee (18/4/13)
The error that could subvert George Osborne’s austerity programme The Guardian, Charles Arthur and Phillip Inman (18/4/13)
The Excel depression Sydney Morning Herald, Paul Krugman (19/4/13)
Europe: Retreat from austerity BBC News, Gavin Hewitt (23/4/13)
Guest post by Thomas Herndon
The Grad Student Who Took Down Reinhart And Rogoff Explains Why They’re Fundamentally Wrong Business Insider, Thomas Herndon (22/4/13)
Papers
Growth in a Time of Debt NBER working paper, Carmen M. Reinhart and Kenneth S. Rogoff (January 2010)
Does High Public Debt Consistently Stifle Economic Growth? A Critique of Reinhart and Rogo ff PERI Working Paper 322, Thomas Herndon, Michael Ash and Robert Pollin (April 2013)
Questions
- What were the particular errors made by Reinhart and Rogoff?
- How has their paper been used as a basis for the design of macroeconomic policy?
- What are the limitations of using even accurate time-series data as the basis for policy measures?
- How might the work of Herndon change the direction of future macroeconomic policy?
- In his guest post in Business Insider (see link above), Herndon wrote: ‘The implication for policy is that, under particular circumstances, public debt can play a key role in overcoming a recession.’ What might this role be?
- Why might we have to be cautious in drawing policy conclusions from Herndon’s work?
The new Japanese government under Shinzo Abe, which took office on 26 December 2012, has been pursuing a policy of weakening the yen. Using a combination of low interest rates, quantitative easing, expansionary fiscal policy and a declared aim of depreciation, the government has succeeded in driving down the value of the yen.
The extra profits earned by Japanese companies from export sales may be stockpiled or paid out in dividends rather than reinvested. And what investment does take place may be abroad rather than in Japan. The net effect may be very little stimulus to the Japanese economy.
