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Strong contagion with weak spillovers

Ellison, M; Graham, LM; Vilmunen, J; (2006) Strong contagion with weak spillovers. Review of Economic Dynamics , 9 (2) pp. 263-283. 10.1016/j.red.2006.01.001. Green open access

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Abstract

In this paper, we develop an explanation for why events in one market may trigger similar events in other markets, even though at first sight the markets appear to be only weakly related. We allow for escape dynamics in each market, and show that an escape in one market is contagious because it more than doubles the probability of a similar escape in another market. We claim that contagion is strong since escapes become highly synchronised across markets. Spillovers are weak because the instantaneous spillover of events from one market to another is small. To illustrate our result, we demonstrate how a currency crisis may be contagious with only weak links between countries. Other examples where weak spillovers would create strong contagion are various models of monetary policy, imperfect competition and endogenous growth.

Type: Article
Title: Strong contagion with weak spillovers
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.red.2006.01.001
Additional information: Imported via OAI, 15:41:43 19th Jul 2007
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL SLASH
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of SandHS > Dept of Economics
URI: https://discovery.ucl.ac.uk/id/eprint/3869
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