Francesco Furlanetto, Ørjan Robstad, Pål Ulvedal, Antoine Lepetit, 09 November 2020

Modern macroeconomic models imply that demand factors have only a small transitory effect, if any, on the productive capacity of the economy. By extending the econometric framework proposed by Blanchard and Quah, this column enables fluctuations in aggregate demand to have a long-run impact on the productive capacity through hysteresis effects. It finds that these demand shocks are quantitatively important in the US, in particular if the Great Recession is included in the sample. More specifically, demand-driven recessions lead to a persistent decline in employment and investment but leave labour productivity largely unaffected.

Antonio Ciccone, Adilzhan Ismailov, 17 May 2020

Persistence of democratisation following transitory economic shocks plays an important role in the theory of political institutions. This column tests the theory of democratic tipping points using rainfall shocks in the world’s most agricultural countries since 1946. Negative rainfall shocks have a strong and transitory effect on agricultural output, but a persistent positive effect on the probability of democratisation even after ten years. These findings suggest that even if it were short-lived, the COVID-19 crisis is likely to tip the scales against some authoritarian regimes and lead to persistent democratisation.

Morgan Kelly, 05 July 2019

A large literature on persistence finds that many modern outcomes strongly reflect characteristics of the same places in the past. Although these regressions feature unusually high t statistics, they usually also display severe spatial autocorrelation in residuals. Exploiting data from 28 persistence studies published in leading journals, this column runs artificial regressions where both variables are spatial noise and shows that this produces severely inflated t statistics. Replicating published studies shows that in most cases the main persistence variable frequently has lower explanatory power than spatial noise but can, in turn, strongly predict spatial noise.

Christiane Nickel, Derry O'Brien, 20 November 2018

Just like other central banks, the ECB generally monitors a range of measures of underlying inflation to help distinguish noise from signal in headline inflation. This column describes measures of underlying inflation that are routinely used at the ECB for measuring euro area headline inflation and provides some insights on their interpretation. Each of the measures has merits and shortcomings and they should be taken together in arriving at a first-pass assessment of developments in headline inflation. At the same time, the measures need to be complemented by a more structural examination of their driving forces in order to better understand the inflation process.

Carl-Johan Dalgaard, Nicolai Kaarsen, Ola Olsson, Pablo Selaya, 10 April 2018

Although spatial differences in economic development tend to be highly persistent over time, this is not always the case. This column combines novel data on Roman Empire road networks with data on night-time light intensity to explore the persistence and non-persistence of a key proximate source of growth – public goods provision. Several empirical strategies all point to the Roman road network as playing an important role in the persistence of subsequent development.

Maria Balgova, Alexander Plekhanov, 18 November 2016

The major increase in the volume of non-performing loans as a result of the recent financial crisis was predictable, but the persistence of this bad debt is a cause for concern. Using a sample of 100 countries, this column compares economic outcomes in three different scenarios following a rise in non-performing loans. Reducing these loans has an unambiguously positive medium-term effect, with countries that experience an influx of fresh credit growing the fastest. Allowing high levels of non-performing loans to persist, on the other hand, can cost more than two percentage points of economic growth annually.

Lawrence H. 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).

Bernhard Dachs, Georg Zahradnik, 06 July 2014

The Global Crisis brought a halt to three decades of R&D internationalisation, in which foreign firms’ share of total R&D expenditure had increased in almost all countries where data is available. However, this column argues that the crisis did not lead to a new global distribution of overseas R&D expenditure, despite the erosion of the EU’s share. The persistence of R&D expenditure is attributed to the costs of relocating R&D and to the autonomy of foreign subsidiaries.

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