Abstract
This paper uses a small and simple theoretical DSGE model in order to conduct some exercises in comparative dynamics of shocks that can be associated with Brexit. We do so by comparing two policy environments, one where a flexible macroprudential regulation (FMR) is in place and one, where this is not the case. This enables us to evaluate whether and to what extent FMR helps to mitigate the Brexit related shocks. We conclude that FMR would indeed be helpful, although in quantitative terms only slightly so.
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In the arguably most restrictive database for scientific publications in economics a search for Brexit AND effect (OR some synonyma) returns 172 papers; the same exercise in Google Scholar leads to 37.900 (sic!) hits.
Queen Elizabeth – whose private wealth was also severly affected by the crisis – famously asked why nobody saw the crisis coming during her first visit ever to the London School of Economics in late 2008. It would be interesting to discuss the nature and depth of the professional ignorance. But the profession should be very clear about the impossibility to forecast specific and rare events and their timing. Here it might suffice to note that there have been quite a few voices around who pointed to patterns in the sense of von Hayek (2007) that were destabilizing financial markets. This is also true with respect to the recent de-regulation of financial markets in the U.S. by the Trump administration.
We do not assume an autoregressive process for γt here, because the effects we get would not be qualitatively different, albeit more pronounced.
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Acknowledgments
We are grateful for comments of participants of the workshop “The Influence of Brexit on the EU28: Banking and Capital Market Adjustments plus Macro Perspectives” on October 12, 2018 in Frankfurt/Main.
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Jerger, J., Körner, J. Brexit and macroprudential regulation: a DSGE perspective. Int Econ Econ Policy 16, 51–64 (2019). https://doi.org/10.1007/s10368-018-00429-8
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DOI: https://doi.org/10.1007/s10368-018-00429-8