The idea that local social capital yields economic benefits is fundamental to theories of agglomeration, and central to claims about the virtues of cities. However, this claim has not been evaluated using methods that permit more confident statements about causality. This paper examines what...

Debates about urban growth and change often center on specialization.However, arguments linking specialization to metropolitan economic development contain diverse, and sometimes conflicting, claims. Is it better to be highly specialized or diversified? Does specialization refer to the absolute...

This paper examines the role of international trade, and specifically imports from low-wage countries, in determining patterns of job loss in U.S. manufacturing industries between 1992 and 2007. Motivated by intuitions from factor-proportions-inspired work on offshoring and heterogeneous firms...

This paper reviews a growing literature investigating how 'immigrant' diversity relates to urban economic performance. As distinct from the labor-supply focus of much of the economics of immigration, this paper reviews work that examines how growing heterogeneity in the composition of the...

This paper investigates how physical, organisational, institutional, cognitive, social, and ethnic proximities between inventors shape their collaboration decisions. Using a new panel of UK inventors and a novel identification strategy, this paper systematically explores the net effects of all...

Ethnic inventors play important roles in US innovation systems, especially in high-tech regions like Silicon Valley. Do 'ethnicity-innovation' channels exist elsewhere? This paper investigates, using a new panel of UK patents microdata. In theory, ethnicity might affect positively innovation via...

High levels of net migration to the UK have contributed to growing cultural diversity, and researchers are turning their attention to the long-term effects of diversity on productivity. Yet little is known about these issues. This paper asks: what are the links between the composition of firms'...

British cities are becoming more culturally diverse, with migration a main driver. Is this growing diversity good for urban economies? This paper explores, using a new 16-year panel of UK cities. Over time, net migration affects both local labour markets and the wider economy. Average labour...

London is one of the world's major cities, and one of its most diverse. London's cultural diversity is widely seen as a social asset, but there is little hard evidence on its importance for the city's businesses. Theory and evidence suggest various links between urban cultural diversity and...

British cities have a surprisingly long history of cultural diversity. Recently they have become significantly more multicultural, with 'super-diversity' emerging in many urban neighbourhoods. Public interest in these changes is high, but there has been little research assessing their impacts....