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Posts Tagged ‘Keynesian economics’

Brazil: suffering from an old economic problem in the new world

The article below looks at the economy of Brazil. The statistics do not look good. Real output fell last year by 3.8% and this year it is expected to fall by another 3.3%. Inflation this year is expected to be 9.0% and unemployment 11.2%, with the government deficit expected to be 10.4% of GDP.

The article considers Keynesian economics in the light of the case of Brazil, which is suffering from declining potential supply, but excess demand. It compares Brazil with the case of most developed countries in the aftermath of the financial crisis. Here countries have suffered from a lack of demand, made worse by austerity policies, and only helped by expansionary monetary policy. But the effect of the monetary policy has generally been weak, as much of the extra money has been used to purchase assets rather than funding a growth in aggregate demand.

Different policy prescriptions are proposed in the article. For developed countries struggling to grow, the solution would seem to be expansionary fiscal policy, made easy to fund by lower interest rates. For Brazil, by contrast, the solution proposed is one of austerity. Fiscal policy should be tightened. As the article states:

Spending restraint might well prove painful for some members of Brazilian society. But hyperinflation and default are hardly a walk in the park for those struggling to get by. Generally speaking, austerity has been a misguided policy approach in recent years. But Brazil is a special case. For now, anyway.

The tight fiscal policies could be accompanied by supply-side policies aimed at reducing bureaucracy and inefficiency.

Brazil and the new old normal: There is more than one kind of economic mess to be in The Economist, Free Exchange Economics (12/10/16)


  1. Explain what is meant by ‘crowding out’.
  2. What is meant by the ‘liquidity trap’? Why are many countries in the developed world currently in a liquidity trap?
  3. Why have central banks in the developed world found it difficult to stimulate growth with policies of quantitative easing?
  4. Under what circumstances would austerity policies be valuable in the developed world?
  5. Why is crowding out of fiscal policy unlikely to occur to any great extent in Europe, but is highly likely to occur in Brazil?
  6. What has happened to potential GDP in Brazil in the past couple of years?
  7. What is meant by the ‘terms of trade’? Why have Brazil’s terms of trade deteriorated?
  8. What sort of policies could the Brazilian government pursue to raise growth rates? Are these demand-side or supply-side policies?
  9. Should Brazil pursue austerity policies and, if so, what form should they take?
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Keynes versus the Classics: a new version of an old story

The ‘Classical’ Treasury view of the 1920s and 30s was that extra government spending or tax cuts were not the solution to depression and mass unemployment. Instead, it would crowd out private expenditure if the money supply were not allowed to rise as it would drive up interest rates. But if money supply were allowed to rise, this would be inflationary. The solution was to reduce budget deficits to increase confidence in public finances and to encourage private investment. Greater price and wage flexibility were the answer to markets not clearing.

Keynes countered these arguments by arguing that the economy could settle in a state of mass unemployment, with low confidence leading to lower consumer expenditure, lower investment, lower incomes and lower employment. The situation would be made worse, not better, by cuts in public expenditure or tax rises in an attempt to reduce the budget deficit. The solution was higher public expenditure to stimulate aggregate demand. This could be achieved by fiscal and monetary policies. Monetary policy alone could, however, be made ineffective by the liquidity trap. Extra money might simply be held rather than spent.

This old debate has been reborn since the financial crisis of 2007/8 and the subsequent deep recession and, more recently, the lack of recovery. (Click here for a PowerPoint of the chart.)

The articles below consider the current situation. Many economists, but certainly not all, take a Keynesian line that austerity policies to reduce public-sector deficits have been counter-productive. By dampening demand, such policies have reduced national income and slowed the recovery in both investment and consumer demand. This has at best slowed the rate of deficit reduction or at worst even increased the deficit, with lower GDP leading to a reduction in tax receipts and higher unemployment leading to higher government social security expenditure.

Although monetary policy has been very loose, measures such as record low interest rates and quantitative easing have been largely ineffective in stimulating demand. Economies are stuck in a liquidity trap, with banks preferring to build their reserves rather than to increase lending. This is the result partly of a lack of confidence and partly of pressure on them to meet Basel II and III requirements of reducing their leverage.

But despite the call from many economists to use fiscal policy and more radical monetary policy to stimulate demand, most governments have been pre-occupied with reducing their deficits and ultimately their debt. Their fear is that rising deficits undermine growth – a fear that was given weight by, amongst others, the work of Reinhart and Rogoff (see the blog posts Reinhart and Rogoff: debt and growth and It could be you and see also Light at the end of the tunnel – or an oncoming train?.

But there is some movement by governments. The new Japanese government under Shinzo Abe is following an aggressive monetary policy to drive down the exchange rate and boost aggregate demand (see A J-curve for Japan?) and, more recently, the European Commission has agreed to slow the pace of austerity by giving the Netherlands, France, Spain, Poland, Portugal and Slovenia more time to bring their budget deficits below the 3% of GDP target.

Of course, whether or not expansionary fiscal and/or monetary policies should be used to tackle a lack of growth does not alter the argument that supply-side policies are also required in order to increase potential economic growth.

A Keynesian Victory, but Austerity Stands Firm The New York Times, Business Day, Eduardo Porter (21/5/13)
With Austerity Under Fire, Countries Seek a More Balanced Solution Knowledge@Wharton (22/5/13)
Keynes, Say’s Law and the Theory of the Business Cycle History of Economics Review 25.1-2, Steven Kates (1996)
Is Lord Keynes back in Brussels? The Conversation, Fabrizio Carmignani (31/5/13)
Keynes’s Biggest Mistake The New York Times, Business Day, Bruce Bartlett (7/5/13)
Keynes’s Not So Big Mistake The New York Times, The Conscience of a Liberal blog, Paul Krugman (7/5/13)
The Chutzpah Caucus The New York Times, The Conscience of a Liberal blog, Paul Krugman (5/5/13)
Keynes and Keynesianism The New York Times, Business Day, Bruce Bartlett (14/5/13)
Japan Is About To Prove Keynesian Economics Entirely Wrong Forbes, Tim Worstall (11/5/13)
The poverty of austerity exposed Aljazeera, Paul Rosenberg (24/5/13)
Britain is a lab rat for George Osborne’s austerity programme experiment The Guardian, Larry Elliott (26/5/13)
Eurozone retreats from austerity – but only as far as ‘austerity lite’ The Guardian, Larry Elliott (30/5/13)
Europe’s long night of uncertainty Daily Times (Pakistan), S P Seth (29/5/13)
Abenomics vs. bad economics The Japan Times Gregory Clark (29/5/13)
European countries to be allowed to ease austerity BBC News (29/5/13)
U.K. Should Restore Growth, Rebalance Economy IMF Survey (22/5/13)
Now everyone is a Keynesian again – except George Osborne The Observer, William Keegan (2/6/13)
Austerity Versus Growth (III): Fiscal Policy And Debt Sustainability Social Europe Journal, Stefan Collignon (30/5/13)


  1. Explain what is meant by Say’s Law and its implication for macroeconomic policy.
  2. Why have many governments, including the UK government, been reluctant to pursue expansionary fiscal policies?
  3. What is meant by the liquidity trap? What is the way out of this trap?
  4. In the first article above, Eduardo Porter argues that ‘moral views are getting in the way of reason’. What does he mean by this?
  5. Explain what are meant by the ‘paradox of thrift’ and the ‘fallacy of composition’. How are these two concepts relevant to the debate over austerity policies?
  6. What are the dangers in pursuing aggressive Keynesian policies?
  7. What are the dangers in not pursuing aggressive Keynesian policies?
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Macroeconomic debate

The history of macroeconomic thought has been one of lively debate between different schools.

First there is debate between those who favour active government intervention (Keynesians) to manage aggregate demand and those who favour a rules-based approach of targeting some variable, such as the money supply (as advocated by monetarists) or the rate of inflation (as pursued by many central banks), or a hybrid rule, such as a Taylor rule that takes into account a weighted target of inflation and real output growth.

Second there is debate about the relative effectiveness of monetary and fiscal policy. Monetarists argue that monetary policy is relatively effective in determining aggregate demand, which in turn affects output in the short run but only prices in the long run. Keynesians argue that monetary policy can be weak in the short run if the economy is in recession. Quantitative easing may simply be accompanied by a decline in the velocity of circulation. It’s not enough to make more money available and keep interest rates close to zero; people must have the confidence to borrow and spend. Keynesians argue that in these circumstances fiscal policy is more effective.

Third there is the debate about the size of the state and the extent of government borrowing. Libertarians, following the views of economists such as Hayek, argue that reducing the size of the state and reducing government borrowing will create a more dynamic economy, where the private sector will expand to take up the slack created by a reduction in the size of the public sector. Their approach to policy involves a mixture of cutting deficits and market-orientated supply-side policy. Economists on the left, by contrast, argue that economic growth is best stimulated in the short term by increases in government spending and that supply-side policy needs to be interventionist, with the government investing in infrastructure, research and development, education and health. Such growth policies, they argue can be targeted on the poor and help to arrest the growing inequality in society.

These debates have been given added impetus by the global financial crisis in 2008 and the subsequent recession, slow recovery and possibility of a slide back into recession. The initial response of governments and central banks was to stimulate aggregate demand. Through combinations of expansionary fiscal policy, interest rates cut to virtually zero and programmes of quantitative easing, the world seemed set on a course for recovery. But one result of the policies was a massive expansion in government deficits and debt. This led to increasing criticisms from the right, and a move away from expansionary to austerity fiscal policies in order to contain debts that were increasingly being seen as unsustainable. And all the while the debates have raged.

The following podcast and articles look at the debates and how they have evolved. The picture painted is a more subtle and nuanced one than a stark ‘Keynes versus Hayek’, or ‘Keynesians versus monetarists’.

Keynes v Hayek: The debate continues BBC Today Programme, Nicholas Wapshott and Paul Ormerod (23/12/11)

Von Hayek Revisited – Warts and All CounterPunch, David Warsh (26/12/11)
Fed up with Bernanke Reuters, Nicholas Wapshott (20/12/11)
Paul Krugman Versus Milton Friedman Seeking Alpha, ‘Shareholders Unite’ (6/12/11)
Keynes Was Right New York Times, Paul Krugman (29/12/11)
Keynes, Krugman, and Austerity National Review Online, William Voegeli (3/1/12)
The Madness of Lord Keynes The American Spectator, Samuel Gregg (19/12/11)
Central Bankers vs. Natural Stock Market Cycles in 2012 The Market Oracle, David Knox Barker (28/12/11)
Now is the time to eat, drink and be merry Financial Times, Samuel Brittan (29/12/11)


  1. To what extent is quantitative easing consistent with (a) Keynesian and (b) monetarist approaches to macroeconomic policy?
  2. What is meant by the ‘liquidity trap’ and what are its implications for monetary policy? Have we witnessed a liquidity trap since the beginning of 2009?
  3. What are the arguments for and against an independent central bank?
  4. Explain Milton Friedman’s assertion ‘that it was the Fed’s failure in 1930 to pursue “open market operations” on the scale needed that deepened the slump’.
  5. What are the implications of growing government deficits and debt for policies to avoid a slide back into recession?
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The world economy

Periodically, the BBC hosts debates on major global topics. The following links are to the January 2011 debate on the state of the world economy and on what policies governments and central banks should pursue.

Should governments be boosting aggregate demand by raising government expenditure and cutting taxes in order to stimulate growth and plan to bring down deficits over the long term once growth is established? Or should they embark on tough fiscal consolidation now by cutting government expenditure and/or raising taxes in order to stimulate confidence by international financiers, thereby keeping long-term interest rates down and creating the foundations for sustainable economic growth? The debate considers these two very different policy approaches.

The participants in the debate are Joseph Stiglitz (Professor of Economics, Columbia University), Christina Romer (Professor of Economics, University of California, Berkeley and Adviser to Barack Obama (2009–10)), George Papaconstantinou (Finance Minister of Greece), Dominique Strauss-Khan (Managing Director, IMF) and Zhou Xiaochuan (Governor, Chinese Central Bank). The debate is in five separate webcasts.

World debate on the global economy BBC World Service (20/1/11)
Part 1
Part 2
Part 3
Part 4
Part 5


  1. What are the arguments for maintaining economic stimulus, at least for the time being? What are the relative merits of fiscal and monetary stimulus? Explain whether such policies are consistent with Keynesian polcies.
  2. What are the arguments for tough fiscal consolidation? Explain whether such policies are consistent with new classical policies.
  3. How successful have US policies been in stimulating the US economy?
  4. What role can China play in the recovery and long-term growth of the global economy and are there any imbalances that need correcting?
  5. Why might countries’ domestic policies result in currency wars? Is currency realignment necessary for sustained global growth?
  6. How important are consumer and business confidence to short-term recovery and long-term growth and to what extent do government policies respond to swings in confidence?
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Searching for a new economic paradigm

Until the credit crunch and crash of 2008/9, there appeared to be a degree of consensus amongst economists about how economies worked. Agents were generally assumed to be rational and markets generally worked to balance demand and supply at both a micro and a macro level. Although economies were subject to fluctuations associated with the business cycle, these had become relatively mild given the role of central banks in targeting inflation and the general belief that we had seen the end of boom and bust.

True, markets were not perfect. There were problems of monopoly power and externalities. Also information was not perfect. But asymmetries of information were generally felt to be relatively unimportant in the information age with easy access to market data through the internet.

Then it all went wrong. With the exception of a few economists, people were caught unawares by the credit crunch. There was too little understanding of the complexities of securitisation and the leveraged risk in these pyramids of debt built on small foundations. And there was too little regard paid to the potentially destructive power of speculation and herd behaviour.

So how should economists model what has been happening over the past three years? Do we simply need to go back to Keynesian economics, which emphasised the importance of aggregate demand and the ability of economies to settle at a high unemployment equilibrium? Can the persistence of high unemployment in the USA and elsewhere be put down to a lack of demand or is the explanation to be found in hysteresis: the persistence of a problem after the initial cause has disappeared? Can failures of markets be incorporated into standard microeconomics?

Or do we need a new paradigm: one that emphasises the behaviour of economic agents and examines how people act when there are information asymmetries? These are the questions that are examined in the podcast below. It is an interview with Nobel Prize winning economist, Joseph Stiglitz.

Joseph Stiglitz: ‘Building blocks’ of a new economics BBC Today Programme (25/8/10)

Needed: a new economic paradigm Financial Times, Joseph Stiglitz (19/8/10)
Obama should get rid of Geithner, Summers Market Watch, Wall Street Journal, Darrell Delamaide (25/8/10)
This rebel’s heresy is not so earth-shaking Fund Strategy, Daniel Ben-Ami (23/8/10)


  1. What are Stiglitz’s criticisms of the economics profession in recent years?
  2. What, according to Stiglitz, should be the features of a new economic paradigm?
  3. Is such a paradigm new?
  4. Provide a critique of Stiglitz’s analysis.
  5. What do you understand by ‘behavioural economics’? Would a greater understanding of human behaviour by economists have helped avert the credit crunch and subsequent recession?
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Keynes is dead; long live Keynes

The following two clips look at John Maynard Keynes’s contribution to macroeconomics and whether his theories have been proved to be correct by the events of the past two years.

“What would John Maynard Keynes make of the financial crisis and the credit crunch?” In the first clip, “Author Peter Clarke, former professor of modern British history at Cambridge University, and the former Conservative chancellor Lord Lamont consider whether Keynes’s ideas were twisted by modern politicians to support their desires to run big spending deficits.”

What would Keynes make of the crisis? BBC Today Programme (25/9/09)
Is Keynes influencing today’s politics? (video) BBC News (2/10/09)


  1. How is the recent crisis and recession similar to and different from the Great Depression of the inter-war period?
  2. Can recent fiscal policies adopted around the world be described as Keynesian?
  3. How would a government of a Keynesian persuasion attempt to manage the move from recession to economic growth and deal with the problem of mounting public-sector debt?
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Macroeconomics – Crisis or what?

Whilst some economists predicted the banking crisis of 2007/8 and the subsequent global recession, many did not. Was this a failure of macroeconomics, or at least of certain macroeconomic schools of thought, such as New Classical economics? Or was it a failure to apply the subject with sufficient wisdom? Should the subject be radically rethought, or can it simply be amended to take into account aspects of behavioural economics and a better understanding of systemic risk?

The four linked articles below from The Economist look at the debate and at the whole state of macroeconomics. The other articles pick up some of the issues.

Will the ‘crisis in macroeconomics’ lead to a stronger subject, more able to explain economies in crisis and not just when they are working well? Will a new consensus emerge or will economists remain divided, not only about the correct analysis of how economies work at a macro level, but also about how to tackle crises such as the present recession?

What went wrong with economics The Economist (16/7/09)
The other-worldly philosophers The Economist (16/7/09)
Efficiency and beyond The Economist (16/7/09)
In defence of the dismal science The Economist (6/8/09)
How to rebuild a shamed subject Financial Times (5/8/09)
What is the point of economists? Financial Times – Arena (28/7/09)
Macroeconomic Models Wall Street Pit (23/7/09)
Macroeconomics: Economics is in crisis – it is time for a profound revamp Business Day (27/7/09)


  1. Distinguish between ‘freshwater’, ‘saltwater’ and ‘brackish’ macroeconomics.
  2. Explain why economists differ over the efficacy of fiscal policy in times of recession. To what extent does the debate hinge on the size of the multiplier?
  3. Why is the potential for macroeconomics higher now than prior to the recession?
  4. What is meant by the ‘efficient market hypothesis’? How did inefficiencies in financial markets contribute to the banking crisis and recession?
  5. Should economists predict the future, or should they confine themselves to explaining the present and past?
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