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.

Stefano Ugolini, 30 August 2016

When Mario Draghi famously declared that the ECB was “ready to do whatever it takes to preserve the euro”, he also specified “within our mandate”. This column examines the institutional limitations to central bankers’ actions. It argues that institutional constraints are essential in determining the sustainability of monetary policies, and hence central banks’ ability to pursue their targets. The weakness of the Bank of England in the heyday of the gold standard is a case in point.

Simon Evenett, Johannes Fritz, 30 August 2016

In July, G20 trade ministers adopted nine 'Guiding Principles for Global Investment Policymaking'. This column introduces the latest GTA report, which shows how well the G20’s track record stacks up against these new growth-promoting goals.

Philippe Aghion, Ufuk Akcigit, Julia Cagé, William Kerr, 29 August 2016

The relationship between taxation and economic growth is complex, and relies in large part on the efficiency with which taxes are used. This column examines the impact of corruption on this relationship. The boost to welfare from reducing corruption is substantially larger than the marginal gains from optimising the tax rate for an existing level of government efficiency.

Ramon Xifré, 29 August 2016

Spain implemented a host of structural reforms following the Global Crisis. But questions remain about whether the current economic condition is due to the reforms or to ‘automatic’ adjustment in public and private sectors. This column sheds light on these questions by examining changes in a set of economic indicators following the introduction of the reforms. Five stylised facts are presented that suggest limitations of the reforms. Much of the current climate appears to reflect inherent limitations of the Spanish economy.

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