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Pré-Publication, Document De Travail Année : 2008

ESTIMATING AGGLOMERATION ECONOMIES WITH HISTORY, GEOLOGY, AND WORKER EFFECTS

Résumé

Does productivity increase with density? We revisit the issue using
French wage and TFP data. To deal with the ‘endogenous quantity of labour' bias (i.e., urban agglomeration is consequence of high local productivity rather than a cause), we take an instrumental variable approach and introduce a new set of geological instruments in addition to standard historical instruments. To deal
with the ‘endogenous quality of labour' bias (i.e., cities attract skilled workers so that the effects of skills and urban agglomeration are confounded), we take a worker fixed-effect approach with wage data. We find modest evidence about the
endogenous quantity of labour bias and both sets of instruments give a similar answer. We find that the endogenous quality of labour bias is quantitatively more important.
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Dates et versions

halshs-00347451 , version 1 (15-12-2008)

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  • HAL Id : halshs-00347451 , version 1

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Pierre-Philippe Combes, Gilles Duranton, Laurent Gobillon, Sébastien Roux. ESTIMATING AGGLOMERATION ECONOMIES WITH HISTORY, GEOLOGY, AND WORKER EFFECTS. 2008. ⟨halshs-00347451⟩
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