Rings containing a field of characteristic zero

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Review of Richard Healey, Gauging What's Real.

Review of Richard Healey's 2008 book. To appear in MIND

The economic consequences of ‘brain drain’ of the best and brightest: Microeconomic evidence from five countries

Brain drain has long been a common concern for migrant-sending countries, particularly for small countries where high-skilled emigration rates are highest. However, while economic theory suggests a number of possible benefits, in addition to costs, from skilled emigration, the evidence base on many of these is very limited. Moreover, the lessons from case studies of benefits to China and India from skilled emigration may not be relevant to much smaller countries. This paper presents the results of innovative surveys which tracked academic high achievers from five countries to wherever they moved in the world in order to directly measure at the micro level the channels through which high-skilled emigration affects the sending country. The results show that there are very high levels of emigration and of return migration among the very highly skilled; the income gains to the best and brightest from migrating are very large, and an order of magnitude or more greater than any other effect; there are large benefits from migration in terms of postgraduate education; most high-skilled migrants from poorer countries send remittances; but that involvement in trade and foreign direct investment is a rare occurrence. There is considerable knowledge flow from both current and return migrants about job and study opportunities abroad, but little net knowledge sharing from current migrants to home country governments or businesses. Finally, the fiscal costs vary considerably across countries, and depend on the extent to which governments rely on progressive income taxation

Financial contagion among members of the EU-8: a cointegration and granger causality approach

The aim of this paper is to examine whether the banking crisis in the US and Western Europe that began in August 2007 spilled over to the currencies the EU-8 such that it could be viewed as financial contagion. The currencies of the EU-8 that will be studied are of the Czech Republic, Estonia, Hungary, Lithuania, Latvia, Poland and Slovakia, daily, from 2005 to 2008

Scientific mobility and knowledge networks in high emigration countries: evidence from the Pacific

This paper uses a unique survey to examine the nature and extent of knowledge flows that result from the international mobility of researchers whose initial education was in small island countries. Current migrants produce substantially more research than similar-skilled return migrants and non-migrants. Return migrants have no greater research impact than individuals who never migrate but are the main source of research knowledge transfer between international and local researchers. Our results contrast with previous claims in the literature that too few migrant researchers ever return home to have much impact, and that there is no productivity gain to researchers from migration