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Abstract:
European regions have experienced a polarisation of their unemployment rates between 1986 and 1996, as regions with intermediate rates have moved towards either extreme. This process has been driven by changes in regional employment, only partly offset by labour force changes. Regions' outcomes have closely followed those of neighbouring regions. This is only weakly explained by regions being part of the same Member State, having a similar skill composition, or broad sectoral specialisation. Even more surprisingly, foreign neighbours matter as much as domestic neighbours. All of this suggests a reorganisation of economic activities with increasing disregard for national borders.

Abstract:
Two innovations in the last century have changed dramatically the cost of communicating and transmitting information: The first is the widespread adoption of telephony; the second is the internet. We study the implications of these changes in ICT for urban structure. We find robust evidence that increases in the number of telephone lines per capita lead to a more concentrated distribution of city sizes and so correspondingly to more dispersion in the distribution of economic activity in space. The evidence on internet usage is more speculative, although it goes in the same direction. This empirical result is rationalized in a theoretical model.

Abstract:
To study the detailed location patterns of industries, and particularly the tendency for industries to cluster relative to overall manufacturing, we develop distance-based tests of localization. In contrast to previous studies, our approach allows us to assess the statistical significance of departures from randomness. In addition, we treat space as continuous instead of using an arbitrary collection of geographical units. This avoids problems relating to scale and borders. We apply these tests to an exhaustive U.K. data-set. For four-digit industries, we find that (i) 52% of them are localized at a 5% confidence level, (ii) localization mostly takes place at small scales below 50 km, (iii) the degree of localization is very skewed, and (iv) industries follow broad sectoral patterns with respect to localization. Depending on the industry, smaller establishments can be the main drivers of both localization and dispersion. Three-digit sectors show similar patterns of localization at small scales as well as a tendency to localize at medium scales.

Abstract:
To study the detailed location patterns of industries, and particularly the tendency for industries to cluster relative to overall manufacturing, we develop distance-based tests of localization. In contrast to previous studies, our approach allows us to assess the statistical significance of departures from randomness. In addition, we treat space as continuous instead of using an arbitrary collection of geographical units. This avoids problems relating to scale and borders. We apply these tests to an exhaustive UK data set. For four-digit industries, we find that (i) only 51% of them are localized at a 5% confidence level, (ii) localization takes place mostly at small scales below 50 kilometres, (iii) the degree of localization is very skewed, and (iv) industries follow broad sectoral patterns with respect to localization. Depending on the industry, smaller establishments can be the main drivers of both localization and dispersion. Three-digit sectors show similar patterns of localization at small scales as well as a tendency to localize at medium scales.

Localization, clusters, K-density, spatial statistics

Abstract:
This Paper considers the spatial distribution of economic activities in the European Union. It has three main aims: (i) to describe the data that is available in the EU and give some idea of the rich spatial data sets that are fast becoming available at the national level; (ii) to present descriptive evidence on the location of aggregate activity and particular industries and to consider how these location patterns are changing over time; (iii) to consider the nature of the agglomeration and dispersion forces that determine these patterns and to contrast them to forces acting elsewhere, in particular the US. Our survey suggests that much has been achieved in the wave of empirical work that has occurred in the past decade, but that much work remains to be done.

Location, European Union, descriptive statistics, empirical studies

Abstract:
This Paper surveys the empirical literature on the economic geography of trade flows, factor prices, and the location of production. The discussion is structured around the empirical predictions of a canonical theoretical model. We review empirical evidence on the determinants of trade costs and the effects of these costs on trade flows. Geography is a major determinant of factor prices, and access to foreign markets alone is shown to explain some 35% of the cross-country variation in per capita income. The Paper documents empirical findings of home market (or magnification) effects, suggesting that imperfectly competitive industries are drawn more than proportionately to locations with good market access. Sub-national evidence establishes the presence of industrial clustering, and we examine the roles played by product market linkages to customer and supplier firms, knowledge spillovers, and labour market externalities.

Economic geography, international trade, location of production, income inequality

Abstract:
We consider the literatures on urban systems and New Economic Geography to examine questions concerning agglomeration and how areas respond to shocks to the economic environment. We first propose a diagrammatic framework to compare the two approaches. We then use this framework to study a number of extensions and to consider several policy relevant issues.

Urban systems, new economic geography, urban and regional policy, diagrammatic exposition

Abstract:
We study the impact of local taxation on the location and growth of firms. Our empirical methodology pairs establishments across jurisdictional boundaries to estimate the impact of taxation. Our approach improves on existing work as it corrects for unobserved establishment heterogeneity, for unobserved time-varying site specific effects, and for the endogeneity of local taxation. Applied to data for English manufacturing establishments we find that local taxation has a negative impact on employment growth, but no effect on entry.

Local taxation, spatial differencing, borders, regression discontinuity

Abstract:
Monetary union is likely to change the spatial structure of economic activity in the EU. This article reviews what is known about these effects and discusses the implications for EMU. We argue that EMU is likely to promote a modest increase in specialization amongst EU countries, although industry-specific shocks are sufficiently small for this not to pose further difficulties for macroeconomic management. Improvements in market access are likely to raise income levels in insiders relative to outsiders. Taking a very long-term view, the urban structure of the EU might be expected to become more polarized, developing a steeper size distribution.

Abstract:
This paper combines establishment level production data with international trade data by port to examine the impact of accession to the EEC on the spatial distribution of UK manufacturing. We use this data to test the predictions from economic geography models of how external trade affects the spatial distribution of employment. Our results suggest that accession changed the country-composition of UK trade and via the port-composition induced an exogenous shock to the economic environment in different locations. In line with theory, we find that better access to export markets and intermediate goods increase employment while increased import competition decreases employment.

Economic geography, EEC, UK manufacturing

Abstract:
High unemployment and regional inequalities are major concerns for European policy-makers, but so far connections between policies dealing with unemployment and regional inequalities have been few and weak. We think that this should change. This paper documents a regional and transnational dimension to unemployment - i.e., geographical unemployment clusters that do not respect national boundaries. Since the mid 1980s, regions with high or low initial unemployment rates saw little change, while regions with intermediate unemployment moved towards extreme values. During this polarization, nearby regions tended to share similar outcomes due, we argue, to spatially related changes in labour demand. These spatially correlated demand shifts were due in part to initial clustering of low-skilled regions and badly performing industries, but a significant neighbour effect remains even after controlling for these, and the effect is as strong within as it is between nations. We believe this reflects agglomeration effects of economic integration. The new economic geography literature shows how integration fosters employment clusters that need not respect national borders. If regional labour forces do not adjust, regional unemployment polarization with neighbour effects can result. To account for these 'neighbour effects' a cross-regional and transnational dimension should be added to national anti-unemployment policies. Nations should consider policies that encourage regional wage setting, and short distance mobility, and the EU should consider including transnational considerations in its regional policy, since neighbour effects on unemployment mean that an anti-unemployment policy paid for by one region will benefit neighbouring regions. Since local politicians gain no votes or tax revenues from these 'spillovers', they are likely to underestimate the true benefit of the policy and thus tend to undertake too little of it.

Abstract:
We use a point-pattern methodology to explore the detailed location patterns of UK manufacturing industries. In particular, we consider the location of entrants and exiters vs. continuing establishments, domestic- vs. foreign-owned, large vs. small, and affiliated vs. independent. We also examine co-localisation between vertically-linked industries. Our analysis provides a set of new stylised facts and confirmation for others.

Localisation, location patterns, clusters, k-density, spatial statistics

Abstract:
This Paper examines how the geography of UK international trade has changed since the UK's accession to the European Economic Community using a newly constructed dataset that gives a detailed breakdown of the UK's imports and exports by both port of entry and exit, and commodity. Our results suggest that between 1970 and 1992 overall imports and exports re-orientated in favour of ports located nearer to the continent. The vast majority of individual commodities also saw a similar re-orientation.

UK trade, EEC, economic geography

Abstract:
We develop a diagrammatic framework that can be used to study the economic linkages between regions or cities. Hitherto, such linkages have not been the primary focus of either the theoretical or empirical literatures. We use the framework to analyse the impact of shocks that occur in one region (eg productivity improvements or increases in housing supply) on other regions, highlighting the key adjustment mechanisms and their long run implications for incomes, the cost of living, and the spatial distribution of population. Our general approach provides a framework encompassing both the New Economic Geography and Urban Systems literatures. We link our approach to these literatures and review empirical studies that quantify the key mechanisms that we have identified.

New Economic Geography, Spatial linkages, Urban and regional policy, Urban systems

Abstract:
We study the relationship between urban sprawl and obesity. Using data that tracks individuals over time, we find no evidence that urban sprawl causes obesity. We show that previous findings of a positive relationship most likely reflect a failure to properly control for the fact the individuals who are more likely to be obese choose to live in more sprawling neighbourhoods. Our results indicate that current interest in changing the built environment to counter the rise in obesity is misguided.

Obesity, selection effects, urban sprawl

Abstract:
We provide empirical evidence on the role of labour market pooling in determining the spatial concentration of UK manufacturing establishments. This role arises because large concentrations of employment iron out idiosyncratic shocks and improve establishments' ability to adapt their employment to good and bad times. We measure the likely importance of labour pooling by calculating the fluctuations in employment of individual establishments relative to their sector and averaging by sector. Our results show that sectors whose establishments experience more idiosyncratic volatility are more spatially concentrated, even after controlling for a range of other industry characteristics that include a novel measure of the importance of localized intermediate suppliers.

labour market pooling, spatial concentration

Abstract:
The government wants 3m houses built by 2020. Economic theory tells us their locations matter for living standards. Economics cannot tell us the optimal locations, but does show that houses are usually socially more valuable in high land-price areas, because additional workers are more productive in such places. Land-price data and evidence on urban agglomeration economies point to a significant rise in the optimal sizes of some UK cities and that optimal locations have moved from industrial-revolution cities towards the South-east. As a result, significantly expanding London, its commuter satellites, and other high-skill places in the UK, but particularly in the South-east, is likely to generate substantial rises in wages and living standards. In these places the planning system dramatically constrains the economy from responding with nineteenth-century dynamism, when new economic opportunities led some towns to grow dramatically.

agglomeration economies, housing location, market potential, migration, spatial economics, urban economics

Abstract:
This paper decomposes the growth in land occupied by residences in the United States to give the relative contributions of changing demographics versus increases in the land area used by individual households. Between 1976 and 1992 the amount of residential land in the United States grew 47.5% while population only grew 17.8%. At first glance, this suggests an important role for per household increases. However, the calculations in this paper show that only 24.3% of the growth in residential land area can be attributed to State level changes in land per household. 37.5% is due to overall population growth, 5.9% to the shift of population towards States with larger houses, 22.7% to an increase in the number of households over this period, and the remaining 9.5% to interactions between these changes. There are large differences across states and metropolitan areas in the relative importance of these components.

Land use, population growth