Márta Bisztray, Miklós Koren, Adam Szeidl, 18 November 2018

Several recent studies have used network methods to explore the spatial spillovers within cities. This column adds to this literature by exploring how the spatial and managerial networks in Budapest influence firms’ import decisions. A peer in the same building with import experience from a specific country has a strong positive effect on the probability that a firm will start importing from that country. These findings point to the importance of social multipliers in facilitating the diffusion of good business practices. 

Guillaume Vuillemey, 17 November 2018

A key function of financial markets is to share risks, and thus to mitigate the transmission of shocks to the real economy. This column analyses one historical setup in which risk-sharing possibilities in financial markets suddenly increased – the creation of the first central clearing counterparty in 1882 in France in the market for coffee futures. The ability to better hedge coffee prices had real effects and increased trade flows Europe-wide. 

Nicholas Bloom, Scarlet Chen, Paul Mizen, 16 November 2018

The majority of businesses in the UK report that Brexit is a source of uncertainty. This column uses survey responses from around 3,000 businesses to evaluate the level and impact of this uncertainty. It finds that Brexit uncertainty has already reduced growth in investment by 6 percentage points and employment by 1.5 percentage points, and is likely to reduce future UK productivity by half of a percentage point.

Demelza Hays, Friederich Zapke, 15 November 2018

Traditional absolute valuation methods can’t be applied to cryptocurrencies like Bitcoin and Ethereum. This column instead applies relative valuation models to crypto-assets, leveraging Metcalfe’s theory of communication system valuation. Preliminary results show that the network value to Metcalfe ratio is relatively successful at identifying periods when Bitcoin was over-and undervalued.

Alexander Bick, Bettina Brüggemann, Nicola Fuchs-Schündeln, Hannah Paule-Paludkiewicz, 15 November 2018

The extent to which tax policies influence the amount of labour that private households supply has been at the centre of many public policy debates. Within married couples, joint versus separate taxation may be one factor that contributes to differences in household labour supply. This column uses a model that closely reproduces the changes in married women’s labour supply in the US and Europe between the early 1980s and 2016 to show that taxes are indeed a major factor shaping the labour supply of married women.

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