We survey the literatures on the economic consequences of the structure of social networks. We develop a taxonomy of 'macro' and 'micro' characteristics of social inter-action networks and discuss both the theoretical and empirical findings concerning the role of those characteristics in...

Can we identify the members of a community who are best- placed to diffuse information simply by asking a random sample of in- dividuals? We show that boundedly-rational individuals can, simply by tracking sources of gossip, identify those who are most central in a network according to...

We examine how participation in a microfinance program diffuses through social networks. We collected detailed demographic and social network data in 43 villages in South India before microfinance was introduced in those villages and then tracked eventual participation. We exploit exogenous...

I estimate a search-and-bargaining model of a decentralized market to quantify the effects of trading frictions on asset allocations, asset prices and welfare, and to quantify the effects of intermediaries that facilitate trade. Using business-aircraft data, I find that, relative to the...

In an environment in which both buyers and sellers can undertake match specific investments, the presence of market competition for matches may solve hold-up and coordination problems generated by the absence of complete contingent contracts. In particular, this Paper shows that when matching is...

This Paper introduces two complementary models of firm-specific training: an informational model and a productivity-enhancement model. In both models, market provision of firm-specific training is inefficient. The nature of the inefficiency depends, however, on the balance between the two key...

This paper studies a dynamic bargaining model with informational externalities between bargaining pairs. Two principals bargain with their respective agents about the price they will pay for their work while its cost is agents' private information and correlated between them. The principals...

We analyse the impact of increased outside opportunities brought to consumers by access to a global market on local market performance under monopoly versus oligopoly. If consumers have to choose once where to shop we show that under all forms of organizing the local market, increased...

Evidence from psychology suggests that overconfidence is more important in North America than in Japan. The pattern is reversed for shame, an emotion that appears to play a more important role among Japanese than North Americans. We develop a model that endogenizes these differences, building on...