Conventional wisdom on supply and demand suggests that demand shocks are cyclical or transitory, and that only technology shocks are responsible for trend changes. This column argues that cyclical events can have permanent effects on demand, and therefore GDP. It is time for policymakers to start considering the possibility of hysteresis seriously.
Antonio Fatás, Lawrence Summers, 12 October 2016
Kurt Mitman, Dirk Krueger, Fabrizio Perri, 30 August 2016
Previous research found that income and wealth inequality had little impact on the aggregate dynamics of consumption, investment and output. This reinforced the idea that we can study downturns in the economy using representative agents. This column argues that household inequality affects both the depth of a recession and the welfare losses of those affected by it. Therefore we should explicitly measure and model household heterogeneity when we consider the impact of business cycle fluctuations and the welfare consequences of economic crises.
Mark Cliffe, 19 May 2016
The idea that the global economy has entered a low-growth equilibrium appears to have gained acceptance. This column argues that this ‘New Normal’ never was, isn’t, and should be replaced by the ‘New Abnormal’. Far from being an equilibrium, the low growth recorded in the West since the nadir of the financial crisis in 2009 has only been achieved by progressively more aggressive and unprecedented monetary policy actions in response to a series of panic attacks in the financial markets. The aftershocks of the crisis are colliding with a series of structural changes which leave the global economy in a state of latent instability.
Volker Grossmann, Thomas Steger, 09 May 2016
The ratio of wealth to income has increased substantially since WWII. Despite the key role of housing wealth in this process, an appropriate macroeconomic model that can explain recent history and assess the future is still lacking. This column presents a novel macroeconomic model designed to investigate the evolution of housing wealth in a growing economy with a fixed overall land supply. A key implication is that rising house and land prices are natural phenomena in a growing economy. Further, rising wealth-to-income ratios appear to be an important trigger for the long-term growth of the finance industry.
Wouter den Haan, Martin Ellison, Ethan Ilzetzki, Michael McMahon, Ricardo Reis, 28 January 2016
The beginning of 2016 has seen dramatic developments in key markets, including falls in share prices, low oil prices, and a slowdown in some emerging market economies. This column summarises the views expressed on these issues by leading experts in the monthly Centre for Macroeconomics survey. While all recognise the considerable uncertainty in the world economy, fewer than a third fear that these events will have a significant negative impact on the UK’s economic recovery. The prevailing argument is that any negative effects of lower foreign demand and market instability will be compensated by the benefits of lower oil prices.
Joshua Aizenman, 03 January 2016
The Global Crisis renewed debate on the benefits and limitations of coordinating international macro policies. This column highlights the rare conditions that lead to international cooperation, along with the potential benefits for the global economy. In normal times, deeper macro cooperation among countries is associated with welfare gains of a second-order magnitude, making the odds of cooperation low. When bad tail events induce imminent and correlated threats of destabilised financial markets, the perceived losses have a first-order magnitude. The apprehension of these losses in times of peril may elicit rare and beneficial macro cooperation.
Refet Gürkaynak, Troy Davig, 25 November 2015
Central banks around the world have been shouldering ever-increasing policy burdens beyond their core mandate of stabilising prices. This column considers the social welfare implications when central banks take on additional mandates that are usually the domain of other policymakers. Additional mandates are shown to worsen trade-offs faced by the central bank, while distorting the incentives of other policymakers. Central bank ‘mandate creep’ may be detrimental to welfare.
Athanasios Orphanides, 11 November 2015
There is generally consensus among macroeconomists that monetary policy works best when it is systematic. Following the financial crisis, the US Federal Reserve shifted from long-term, systematic policy to short-term goals targeting unemployment. This column argues that, while these were appropriate in the aftermath of the downturn, such policy accommodations have been pursued for too long since. The need for a somewhat accommodative policy cannot be used to defend the current non-systematic policy and excessive emphasis on short-term employment gains.
Michael Burda, 23 September 2015
Many analysts believe that German economists hold a very different view of macroeconomics. This column presents a personal view why this belief is wrong. The fact that Europe still consists of sovereign nations and that most Europeans still want to keep it that way informs much of what happens inside German economists' heads.
Stefan Gerlach, Reamonn Lydon, Rebecca Stuart, 21 July 2015
Despite being a mainstay of macroeconomic theory for the past half century, the Phillips curve often receives the death knell from various commentators. These critiques often rely on results from data samples spanning relatively short periods. Using the case of Ireland, this column argues that short-term idiosyncrasies can explain the failure of the model in these contexts. Taking a longer historical view, the Phillips curve remains a useful macroeconomic model, at least in the Irish context.
Wouter den Haan, 23 December 2014
Macroecomics has changed in a number of ways since the global crisis. For example, there is now more emphasis on modeling the financial sector, self-fulfilling panics, herd behaviour and the new role of demand. This Vox Talk discusses these changes as well as those areas in macroeconomics that are currently perhaps not researched enough. Wouter den Haan explains the inadequacy of the conventional 'rational expectations' approach, quantitative easing, endogenous risk and deleveraging and refers to current CEPR research that reflects the changes. He concludes by reminding us that the 'baby boomers' issue could be the basis of the next crisis.
Olivier Blanchard, 03 October 2014
Before the 2008 crisis, the mainstream worldview among US macroeconomists was that economic fluctuations were regular and essentially self-correcting. In this column, IMF chief economist Olivier Blanchard explains how this benign view of fluctuations took hold in the profession, and what lessons have been learned since the crisis. He argues that macroeconomic policy should aim to keep the economy away from ‘dark corners’, where it can malfunction badly.
The Editors, 12 September 2014
This column introduces the first in a new series – VoxEU Course Companions. Designed to supplement Mankiw’s Macroeconomics textbook, this Course Companion brings together carefully selected Vox columns to provide relevant examples of economic theory in action and offer thought-provoking perspectives on arguments that come up time and again in exam-style questions.
Alan Blinder, Mark Watson, 04 September 2014
Since World War II, economic growth has been faster in the US under Democratic presidents than under Republican ones. This column documents that which party controls Congress does not matter for growth, that the Democratic growth advantage is concentrated in the first two years of a presidency, and that presidential party affiliation Granger-causes growth. Neither fiscal nor monetary policy can account for this gap. Instead, the factors that have explanatory promise are: shocks to oil prices, total factor productivity, European growth, and consumer expectations of future economic conditions.
Coen Teulings, Richard Baldwin, 10 September 2014
The CEPR Press eBook on secular stagnation has been viewed over 80,000 times since it was published on 15 August 2014. The PDF remains freely downloadable, but as the European debate on secular stagnation is moving into policy circles, we decided to also make it a Kindle book. This is available from Amazon; all proceeds will help defray VoxEU expenses.
Joshua Aizenman, Ilan Noy, 29 May 2013
What do macroeconomic shocks do to public and private saving? This column argues that it is only truly dramatic shocks that have a long-lasting effect on saving behaviour. Past crises tend to increase savings among households, but they also lead to decreased public-sector saving. However, the evidence suggests that this decrease in public saving is about a third of the magnitude than the corresponding increase in household saving.
Andrew Haldane, 01 October 2012
There is a long list of culprits when it comes to assigning blame for the financial crisis. This column argues economists are among the guilty, having succumbed to an intellectual virus of theory-induced blindness. It adds this calls for an intellectual reinvestment in models of heterogeneous, interacting agents, following in the footsteps of other social scientists. This will require a sense of academic adventure sadly absent in the pre-crisis period.
Toshiaki Watanabe, 29 November 2011
In October 2011, Christopher Sims of Princeton University shared the Nobel Prize for economics with Thomas Sargent of New York University “for their empirical research on cause and effect in the macroeconomy”. This column by one of Professor Sims’ former students – now a distinguished professor – discusses the importance of his work.
Richard Baldwin, 04 February 2011
The financial crisis and the ensuing recession have prompted reappraisals of macroeconomic theory. This column introduces Policy Insight No 53 authored by Axel Leijonhuvd that argues that it is time to stop thinking of the macroeconomy as an electrical circuit; we must think of an economy as an “open system” and adapt our methods to the nature of the economy.
Axel Leijonhufvud, 04 February 2011
The financial crisis and the ensuing recession have prompted reappraisals of the state of macroeconomic theory. CEPR Policy Insight No 53 argues that we have to think of an economy as an “open system” in the ontological sense and adapt out methods to the nature of an economy – to change how we do economics.