Rosario Crinò, Laura Ogliari, 29 July 2015

The production of high-quality goods influences key aspects of countries’ economic performance, including growth and development. This column argues that removing credit market imperfections may help countries transition from the production of low-quality to high-quality goods, especially in industries that are more sensitive to financial frictions.

Ross Levine, Chen Lin, Wensi Xie, 29 July 2015

Some have argued that the stock market serves as a ‘spare tire’ during banking crises by providing an alternative corporate financing channel. This column examines the claim using data for 36 countries spanning 20 years. The findings support the three core predictions of the spare tire view, suggesting that countries can insulate parts of their economy from future banking crises by designing appropriate legal frameworks.

Philippe Aghion, Ufuk Akcigit, Antonin Bergeaud, Richard Blundell, David Hemous, 28 July 2015

In recent decades, there has been an accelerated increase in top income inequality, particularly in developed countries. This column argues that innovation partly accounts for the surge in top income inequality and fosters social mobility. In particular, the positive effect of innovation on social mobility is due to new innovators.

Stefano DellaVigna, Eliana La Ferrara, 28 July 2015

Every day, we are all exposed to all sorts of emotive and exhilarating media entertainment. But what, if any, are the measurable impacts? Are newspapers and periodicals, for instance, more important than soap operas? This column introduces a survey of the wide-ranging literature from the Handbook of Media Economics, presenting a number of surprising findings.

James A Robinson, Ragnar Torvik, Thierry Verdier, 27 July 2015

Economists have long understood that policy chosen by politics is unlikely to be socially optimal. This is because politicians face the probability of losing power and may discount the future too much, or act to improve their re-election probability. This column explores these issues taking into account the fact that future government revenue is uncertain. Public income volatility acts to reduce the efficiency of public policy. This has important implications for developing countries that rely on income from volatile sources, such as natural resource extraction.

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