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?
On 5 and 6 April, there was a conference on conscious capitalism in San Francisco. In January, a new book, Conscious Capitalism: Liberating the Heroic Spirit of Business, by John Mackey and Rajendra Sisodia, was published. Many in the business world are enthusiastic about this seemingly new approach to business, which focuses on broader social, environmental and ethical goals, rather than simple profit maximisation.
As the Washington Times review linked to below states:
“Conscious Capitalism” promotes a business culture that embodies “trust, accountability, caring, transparency, integrity, loyalty and egalitarianism.” The management ideal of “Conscious Capitalism” contains four key elements of “decentralization, empowerment, innovation and collaboration.” Above all, this exemplary form of business practice relies on careful attention to four tenets: higher purpose and core values, stakeholder integration, conscious leadership and conscious culture and management.
So how realistic is this vision of caring capitalism? There may be a few inspiring businesspeople, truly committed to improving the interests of the various stakeholders of their business and society more generally, but could it become a model for business in general? And if so, does this require education, monitoring and regulation? Or can a libertarian approach to business generate an environment where conscious and caring capitalists flourish and succeed better than those with a more narrow focus on profit?
The following videos and articles discuss conscious capitalism and the arguments of those, such as John Mackey, founder and co-CEO of Whole Food Market, who advocate it.
Webcasts
Conscious capitalism The Economist, John Mackey (15/3/13)
Conscious Capitalism: Heroes of the Business World Conscious capitalism, April in San Francisco (5/4/13)
It’s Not Corporate Social Responsibility Conscious capitalism, John Mackey (Jan 13)
Articles, reviews and information
Conscious Capitalism: Creating a New Paradigm for Business Whole Planet Foundation, John Mackey
Companies that Practice “Conscious Capitalism” Perform 10x Better Harvard Business Review, Tony Schwartz (4/4/13)
4 Ways to Become a (More) Conscious Capitalist Inc., Francesca Louise Fenzi (8/4/13)
The New Management Paradigm & John Mackey’s Whole Foods Forbes, Steve Denning (5/1/13)
Book Review: ‘Conscious Capitalism’ Washington Times, Anthony j. Sadar (20/3/13)
Book Review: Whole Foods Co-CEO John Mackey’s Conscious Capitalism Huffington Post, Christine Bader (28/1/13)
Chicken Soup for a Davos Soul Wall Street Journal, Alan Murray (16/1/13)
Conscious business Wikipedia
Questions
- What are the features of conscious capitalism?
- Do firms “get the shareholders they deserve”?
- How might firms that are not pursuing conscious capitalism be persuaded to become more conscious and more caring?
- How does conscious capitalism differ from corporate social responsibility?
- What would you understand by “conscious consumers”? How might their behaviour differ from other consumers?
- Why might firms engaging in conscious capitalism become more profitable than firms that have a simple aim of profit maximisation?
- What reforms, both internal within a firm and in the legal environment, does John Mackey advocate? Do you agree with his suggestions? What else do you suggest?
The UK economy faces a growing problem of energy supplies as energy demand continues to rise and as old power stations come to the end of their lives. In fact some 10% of the UK’s electricity generation capacity will be shut down this month.
Energy prices have risen substantially over the past few years and are set to rise further. Partly this is the result of rising global gas prices.
In 2012, the response to soaring gas prices was to cut gas’s share of generation from 39.9% per cent to 27.5%. Coal’s share of generation increased from 29.5% to 39.3%, its highest share since 1996 (see The Department of Energy and Climate Change’s Energy trends section 5: electricity). But with old coal-fired power stations closing down and with the need to produce a greater proportion of energy from renewables, this trend cannot continue.
But new renewable sources, such as wind and solar, take a time to construct. New nuclear takes much longer (see the News Item, Going nuclear). And electricity from these low-carbon sources, after taking construction costs into account, is much more expensive to produce than electricity from coal-fired power stations.
So how will the change in balance between demand and supply affect prices and the security of supply in the coming years. Will we all have to get used to paying much more for electricity? Do we increasingly run the risk of the lights going out? The following video explores these issues.
Webcast
UK may face power shortages as 10% of energy supply is shut down BBC News, Joe Lynam (4/4/13)
Data
Electricity Statistics Department of Energy & Climate Change
Quarterly energy prices Department of Energy & Climate Change
Questions
- What factors have led to a rise in electricity prices over the past few years? Distinguish between demand-side and supply-side factors and illustrate your arguments with a diagram.
- Are there likely to be power cuts in the coming years as a result of demand exceeding supply?
- What determines the price elasticity of demand for electricity?
- What measures can governments adopt to influence the demand for electricity? Will these affect the position and/or slope of the demand curve?
- Why have electricity prices fallen in the USA? Could the UK experience falling electricity prices for similar reasons in a few years’ time?
- In what ways could the government take into account the externalities from power generation and consumption in its policies towards the energy sector?
After a week of turmoil in Cyprus (see the News item Ochi, ochi, ochi) a deal has been struck between Cyprus, the EU and the IMF over a €10bn bailout for the island’s banking system. But while the deal may bring the immediate crisis to an end, the Cypriot economy could face years of austerity and depression. And there remain questions over whether the deal sends the wrong message to depositors in banks in other eurozone countries whose banking systems are under pressure.
Unlike the original EU proposal, the deal will not impose a levy on deposits under €100,000, much to the relief of small and medium depositors. But individuals and businesses with deposits over €100,000 in the two main troubled banks (Laiki and the Bank of Cyprus) will face losses that could be as high as 40%. The precise size will become clear in the coming days.
The troubled second largest bank, Laiki (Popular) Bank, will be split into a ‘good’ and a ‘bad’ bank. The assets and liabilities of the good part will be taken over by the largest bank, the Bank of Cyprus. Thus people’s accounts under €100,000 will be moved from one to the other. The ‘bad’ part will include deposits over €100,000 and bonds. Holders of these could lose a substantial proportion of their value.
Many businesses will be hard hit and may be forced to close. This could have serious adverse multiplier effects on the economy. These effects will be aggravated by the fiscal austerity measures which are also part of the deal. The measures are also likely to discourage further inward investment, again pushing the economy further into recession.
And then there are the broader effects on the eurozone. The direct effect of a decline in the Cypriot economy would be tiny; the Cypriot economy accounts for a mere 0.2% of eurozone GDP. Also the effect on small savers in other eurozone countries is also likely to be limited, as people will probably be reassured that savings under €100,000 have remained protected, even in an economy as troubled as Cyprus.
But some commentators argue that the effect on large depositors in other troubled eurozone countries, such as Portugal, Spain, Greece and Italy, could be much more serious. Would people with large balances in these countries prefer to move their money to, say, Germany, or even out of the eurozone altogether? There is clearly disagreement over this last point as you will see from the articles below.
Webcasts and Podcasts
Cyprus agrees bailout with eurozone ministers The Guardian (25/3/13)
Cyprus bailout: Deal reached in Eurogroup talks BBC News (25/3/13)
‘Disaster avoided’ as Cyprus agrees EU bailout deal Euronews (25/3/13)
Cyprus saved from bankruptcy Channel 4 News on YouTube, Faisal Islam (25/3/13)
What are the implications of the Cyprus deal? BBC Radio 4 Today Programme, Stephanie Flanders (25/3/13)
Cyprus bailout deal: Russia riled but Germany relieved BBC News, Steve Rosenberg in Moscow and Stephen Evans in Berlin (25/3/13)
Cyprus bailout deal ‘durable’ says IMF chief BBC News, Christine Lagarde (25/3/13)
Cyprus Bailout Deal Raises Questions: Lombardi Bloomberg, Domenico Lombardi (25/3/13)
Minister Michalis Sarris: Cyprus paying ‘tremendous cost’ BBC Radio 4 Today Programme, Michalis Sarris (26/3/13)
Articles
Last-minute Cyprus deal to close bank, force losses Reuters, Jan Strupczewski and Annika Breidthardt (25/3/13)
Cyprus strikes last-minute EU bailout deal The Guardian, Ian Traynor (25/3/13)
‘There is no future here in Cyprus’ The Telegraph, Nick Squires (25/3/13)
Back from the brink: EU ministers approve €10bn bailout deal at 11th-hour to save Cyprus Independent, Charlotte McDonald-Gibson and Majid Mohamed (25/3/13)
Cyprus bailout: Deal reached in Eurogroup talks BBC News (25/3/13)
Q&A: Cyprus deal BBC News (25/3/13)
The rescue of Cyprus won’t feel like one to its people BBC News, Robert Peston (25/3/13)
Lessons of Cyprus BBC News, Stephanie Flanders (25/3/13)
Cyprus bailout: Dijsselbloem remarks alarm markets BBC News (25/3/13)
Cyprus saved – but at what cost? The Guardian, Helena Smith (25/3/13)
Cyprus bail-out: savers will be raided to save euro in future crisis, says eurozone chief The Telegraph, Bruno Waterfield (25/3/13)
Cyprus’s banks have been tamed – are Malta and Luxembourg next? The Guardian, Ian Traynor (25/3/13)
Lehman lessons weigh on Cyprus talks but 1920s slump must not be ignored The Guardian, Larry Elliott (24/3/13)
Questions
- Explain what is meant by ‘moral hazard’. What moral hazards are implicit in the deal that has been struck with Cyprus?
- How does the size of the banking system in Cyprus as a proportion of GDP differ from that in other troubled eurozone countries? How does this affect the ‘contagion’ argument?
- Does the experience of Iceland and its troubled banks suggest that the Cypriot problem has nothing to do with its being in the eurozone?
- What options are open to the Cypriot government to stimulate the economy and prevent a severe recession? How realistic are these options (if any)?
- What are the likely implications of the deal for the economic relationships (as opposed to the political ones) between Cyprus and Russia and between the eurozone and Russia?
- Are there any similarities in the relationships between the weak and strong eurozone countries today and those between Germany and other countries in the 1920s and 30s?
Banks in Cyprus are in crisis. They have many bad debts e.g. to Greece and as mortgages in a falling property market. Private-sector debts have become unsustainable for the banks. The problem is compounded by negative economic growth and large government deficits (see chart). But, as with Icelandic banks back in 2008, this means a crisis for the whole country.
The reason is that the banking sector in Cyprus, as in Iceland and Ireland too, is large relative to the whole economy – over 8 times annual GDP (second only to Ireland in the EU). Loans to Greece alone are as much as 160% of Cyprus’ GDP and Cypriot banks were badly hit by the terms of the Greek bailout, which required creditors to take a 53% reduction (or ‘haircut’) in the value of their loans to Greece. With such a large banking sector, it is impossible for the Cypriot government alone to rescue the banks.
Cyprus thus turned to the EU for a bailout: back in June 2012. This makes Cyprus the fifth country to seek a bailout (after Greece, Ireland, Portugal and Spain). A bailout of €10 billion has just been agreed by the EU and IMF. The bailout comes with the ‘usual’ conditions of strong austerity measures of tax rises and cuts in government expenditure. But what makes this bailout different from those given to the other countries was a proposed levy on savers.
The proposal was that people with up €99,999 in their bank accounts (of any type) would face a one-off tax of 6.75%. The rate for those with €100,000 or more would be 9.9%, including on the first €99,999. This would raise around €5.8 billion of the €10 billion.
Not surprisingly, there was a public outcry in Cyprus. People had thought that their deposits were protected (at least up to €100,000). There was a run on cash machines, which, as a result were set to deliver just small amounts of cash to cope with the excessive demand. There was huge pressure on the Cypriot government not to introduce the measure.
But the ramifications of the proposed levy go well beyond the question of justice to savers. Questions are being raised about its incentive/disincentive effects. If people in other countries in future financial difficulties felt that they might face similar levies, how would they behave? Also, there is no haircut being proposed for holders of banks’ bonds. As Robert Peston states in his first article below:
The Cypriot deal sets back the cause of the new global rules for bringing order to banking systems when crisis hits. Apart from anything else, in other eurozone countries where banks are weak, it licenses runs on those banks, as and when a bailout looms.
But getting incentives right is not easy. As the Buttonwood column in The Economist points out:
The problem is tied up with the issue of moral hazard. This can be applied to both creditors and debtors; the former should be punished for reckless lending and the latter for living beyond their means. The collapse of Lehman Brothers is seen as an example of the faulty reasoning behind moral hazard; by letting the bank go bust, the crisis was spread throughout the financial system. But rescuing every creditor (or intervening to bail out the markets every time they falter) is the reason we are in this mess.
One alternative considered by the Cyprus parliament was to exempt people with less than €20,000 in their accounts from the levy. But this was rejected as being insufficient protection for savers. Another is to exempt people with less than €100,000, or to charge people with between €20,000 and €100,000 at a lower rate or rates.
But charging less, or nothing, on deposits of less than €100,000 would make it harder to to raise the €5.8 billion required by the EU. Without alternative measures it would mean charging a rate higher than 9.9% on larger deposits. The Cypriot government is afraid that this would discourage inward investment. Russia, in particular, has invested heavily in the Cyprus economy and Russia is campaigning vigorously to limit the size of the levy on large deposits. But there is little sympathy for Russian depositors, much of whose deposits are claimed to be ‘laundered money’. The Cypriot government has been seeking financial support from the Russian government.
An alternative proposal being considered is to issue government bonds in an “investment solidarity fund” and to transfer pension funds from semi-public companies to the state. Also Russia may be willing to invest more money in Cyprus’ offshore oil and gas fields.
Agreement
A deal was struck between Cyprus and the EU/IMF early in the morning of 25 March, just hours before the deadline. For details, see the News Item Cyprus: one crisis ends; another begins.
Webcasts and podcasts
Eurozone ministers agree 10bn euro Cyprus bailout Channel 4 News (16/3/13)
Bailout is ‘blackmail’ claims Cyprus president Euronews (17/3/13)
Cyprus’s president tries to calm fears over EU bailout The Guardian (18/3/13)
Cypriot bank customers reactions to savings levy BBC News (17/3/13)
Cyprus bailout: Parliament postpones debate amid anger BBC News (17/3/13)
Cyprus parliament delays debate on EU bailout Al Jazeera (17/3/13)
Cyprus told it can amend bailout, as key vote postponed BBC News, Gavin Hewitt (18/3/13)
Robert Peston: Cyprus bailout an ‘astonishing mess’ BBC News, Robert Peston (18/3/13)
Cyprus bailout is ‘completely unfair’ BBC Radio 4 Today Programme, Michael Fuchs and Bernadette Segol (18/3/13)
Lenders ‘doing everything you should not do’ on Cyprus BBC Radio 4 Today Programme, Alistair Darling (19/3/12)
Cyprus warned over bailout rejection BBC News (20/3/13)
Articles
Cyprus becomes fifth eurozone bailout The News International (Pakistan) (17/3/13)
Cyprus bailout deal sparks run on ATMs Irish Independent (17/3/13)
EU leaders gamble in Cyprus bank bailout BBC News, Gavin Hewitt (17/3/13)
Cyprus told it can amend bailout, as key vote postponed BBC News (18/3/13)
Q&A: Cyprus bailout BBC News (19/3/13)
Cyprus’ President Defends Bailout Deal The Motley Fool (16/3/13)
Sad Cyprus The Economist, Buttonwood’s Notebook (12/3/13)
The Cypriot bail-out: A fifth bitter lemon The Economist (30/6/12)
Analysis: Cyprus bank levy risks dangerous euro zone precedent Reuters, Mike Peacock (17/3/13)
The Cyprus precedent Reuters, Felix Salmon (17/3/13)
The Cyprus Bank Bailout Could Be A Disastrous Precedent: They’re Reneging On Government Deposit Insurance Forbes, Tim Worstall (16/3/13)
Cyprus rescue breaks all the rules BBC News, Robert Peston (18/3/13)
Cyprus and the eurozone’s survival BBC News, Robert Peston (20/3/13)
Eurogroup defends Cyprus bail-out The Telegraph (17/3/13)
Cyprus eurozone bailout prompts anger as savers hand over possible 10% levy The Guardian (16/3/13)
Cyprus’s wealth tax makes perfect sense – its rich won’t escape unscathed The Guardian, Phillip Inman (18/3/13)
The tragedy of Cyprus The Real Economy blog, Edmund Conway (16/3/13)
Damage limitation in Cyprus BBC News, Stephanie Flanders (19/3/13)
The fatal flaw in the eurozone’s not-so-cunning plan for Cyprus The Guardian, Larry Elliott (19/3/13)
Cyprus plans special fund in race to get EU-IMF bailout BBC News, (21/3/13)
Cyprus says ‘significant progress’ in debt crisis talks BBC News (23/3/13)
Background information
The Banking System in Cyprus: Time to Rethink the Business Model? Cyprus Economic Policy Review, Vol. 5, No. 2, pp. 123–130, Constantinos Stephanou (2011)
European sovereign-debt crisis Wikipedia
Questions
- What is the justification given by the Cypriot government and the EU for imposing a levy on bank deposits?
- What alternative measures could have been demanded by the EU? Why weren’t they?
- What is the significance of Russian deposits in Cypriot banks?
- Compare the benefits of the proposed levy rates with the alternative of imposing levies only on deposits over €100,000, but at higher rates (perhaps tiered).
- Explain the moral hazard issues in bailing out the Cypriot banks.
- How serious is the problem that imposing a tax on deposits in Cypriot banks might have adverse affects on the behaviour of depositors in other countries’ banks?
- How might Cypriots behave in future in regards to depositing money in banks? What impact could this have on the economy of Cyprus?
- Explain “the unholy trinity of options facing indebted nations (inflate, stagnate, default)”. Compare the effectiveness of each.
