Tamim Bayoumi, Barry Eichengreen, 27 March 2017

Asymmetric aggregate supply and demand disturbances across its regions prevent the smooth functioning of a currency union. This column argues that the disturbances in peripheral regions of the US show more symmetry with those in the anchor region than is the case for the Eurozone. Moreover, disturbances to the GIPPS, which previously were in Europe’s periphery, have become more correlated with disturbances to the anchor (Germany) compared to other Eurozone countries. Hysteresis operating via the financial sector may provide an explanation for this development.

Antonio Fatás, Lawrence Summers, 12 October 2016

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.

Lawrence Summers, Antonio Fatás, 25 October 2015

The global financial crisis has permanently lowered the path of GDP in all advanced economies. At the same time, and in response to rising government debt levels, many of these countries have been engaging in fiscal consolidations that have had a negative impact on growth rates. We empirically explore the connections between these two facts by extending to longer horizons the methodology of Blanchard and Leigh (2013) regarding fiscal policy multipliers. Using data seven years after the beginning of the crisis as well as estimates on potential output our analysis suggests that attempts to reduce debt via fiscal consolidations have very likely resulted in a higher debt to GDP ratio through their negative impact on output.  Our results provide support for the possibility of self-defeating fiscal consolidations in depressed economies as developed by DeLong and Summers (2012).

Laurence Ball, 01 July 2014

Whereas textbook macroeconomic theory suggests that output should return to potential after a recession, there is mounting evidence that deep recessions have highly persistent effects on output. This column reports estimates of the long-term damage caused by the Great Recession. In most countries in the sample, the loss of potential output – 8.4% on average – has been almost as large as the loss of actual output. In the countries hit hardest by the recession, the growth rate of potential output is much lower today than it was before 2008.

Richard Dorsett, 21 November 2013

Individuals moving from long-term unemployment into work face a number of challenges. This column discusses the use of temporary in-work support during this transition. Recent experimental evidence has shown the potential for such support to have a positive long-term effect. It can increase not only employment entry but also employment retention, and so may provide a means of addressing the low pay, no pay cycle.