In this paper we introduce a stochastic network formation model where agents choose both actions and links. Neighbors in the network benefit from each other's action levels through local complementarities and there exists a global interaction effect reflecting a strategic substitutability in...

In this paper we analyze R&D collaboration networks in industries where firms are competitors in the product market. Firms' benefits from collaborations arise by sharing knowledge about a cost-reducing technology. By forming collaborations, however, firms also change their own competitive...

We study the formation of networks in environments where agents derive benefits from other agents directly linked to them but suffer losses through contagion when any agent on a path connected to them is hit by a shock. We first consider networks with undirected links (e.g. epidemics,...

This paper analyzes the response of the soybean sown area of Argentina to changes in price incentives and other variables which are relevant for agricultural production. To this effect, VEC models are estimated for some of the main producing provinces and for the country’s total in the period...

Italy makes for a very interesting case study of the impact of social variables on economic performance. Across its provinces, differences in social and cultural attitudes seem associated to large differences in economic development. We analyze the importance of some social variables on...

This paper analyzes the role of uncertainty in a multi-sector housing model with financial frictions. We include time varying uncertainty (i.e. risk shocks) in the technology shocks that affect housing production. The analysis demonstrates that risk shocks to the housing production sector are a...

This paper examines spatial variations in exposure to toxic air pollution from industrial facilities in urban areas of the United States, using geographic microdata from the U.S. Environmental Protection Agency's Risk-Screening Environmental Indicators project. We find that average exposure in...

Existing studies in finance have documented the comovement of stock returns of companies headquartered in the same location. The interpretation is that local investors have a “local bias†due to an information advantage on local companies. This paper argues that localized agglomeration...

We study the impact of research collaborations in coauthorship networks on total research output. Through the links in the collaboration network researchers create spillovers not only to their direct coauthors but also to researchers indirectly linked to them. We characterize the interior...