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Paper No' SERCDP0121: | Full paper
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Keywords: Specialization; diversification, agglomeration economies, urban wages
JEL Classification: R11; R12; O21
Is hard copy/paper copy available? YES - Paper Copy Still In Print.
This Paper is published under the following series: SERC Discussion Papers
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Abstract: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 scale of an activity in a region, its share within the regional economy, or its share in the nation’s economy? Does specialization have static effects, or is its impact chiefly evolutionary? This paper starts by investigating these different theoretical claims. We then turn to an empirical inquiry into the roles of relative and absolute specialization. By analyzing local agglomerations over time, we find that growing absolute specialization is positively linked to wages, while changes in relative concentration are not significantly associated with wage dynamics. This supports notions of specialization based on the absolute size of an agglomeration, and casts doubt on notions of specialization based on shares of an activity in the regional economy.
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