Why do firms cluster near one another? We test Marshall's theories of industrial agglomeration by examining which industries locate near one another, or coagglomerate. We construct pairwise coagglomeration indices for US manufacturing industries from the Economic Census. We then relate...

Using European data, this paper finds that (i) industry entry and exit rates are positively related to industry rates of investment-specific technical change (ISTC); and (ii) the sensitivity of industry entry and exit rates to cross-country differences in entry costs depends on industry rates of...

We measure the impact of a drastic new technology for producing steel--the minimill--on industry-wide productivity in the US steel industry, using unique plant-level data between 1963 and 2002. The sharp increase in the industry's productivity is linked to this new technology through two...

We report evidence that Bitnet adoption facilitated increased research collaboration between US universities. However, not all institutions benefited equally. Using panel data from seven top engineering journals, Bitnet connection records, and institution ranking data, we find that middle-tier...

Recent articles have shown that contracts can support the efficient outcome for bilateral trade even in the face of specific investments and incomplete contracting. These studies typically considered 'selfish' investments that benefit the investor (e.g., the seller's investment reduces her...

In a recent paper, Chiara Fumagalli and Massimo Motta (2006) challenge the idea that an incumbent can foreclose efficient entry in the face of scale economies by using exclusive contracts. They claim that inefficient exclusion does not arise when buyers are homogenous firms that compete...

We explore patterns of vertical integration in the US airline industry. Major airlines subcontract portions of their network to regional partners, which may or may not be owned. We investigate if ownership economizes on ex post renegotiation costs. We estimate whether airlines are more likely to...