Lagos and Wright (2005) introduced an influential model of monetary exchange in which trade alternates between centralized and decentralized markets and money is essential. A limitation of their model and of the literature that follows is that they do not provide a microfoundation for the...

Mutual aid often entails the sharing of knowledge. We investigate how, in turn, knowledge sharing affects the long-run dynamics of mutual aid. In our economy, agents with specific knowledge are “held up” by their principals. Inside communities, agents aid each other by sharing their specific...

We investigate the effects of a credit crunch in an economy where firms can operate a mature technology or restructure their activity and adopt a new technology. We show that firms' collateral and credit relationships ease firms' access to credit and investment but can also inhibit firms'...

We investigate the effects of a credit crunch in an economy where firms can operate a mature technology or restructure their activity and adopt a new technology. We show that firms’ collateral and credit relationships ease firms’ access to credit and investment but can also inhibit firms’...

This article proposes a theory of financial intermediation based on intermediaries' role in the reallocation of assets of distressed firms. The article suggests that intermediaries aggregate information on firms in credit relationships and use this information to facilitate asset reallocation...

It is generally agreed that within long-term relationships agents learn the characteristics of their market partners better than through spot transactions. In contrast, little is known on how relationship-based and transaction-based markets compare when agents learn about the aggregate economy...

"We investigate the long-run dynamic interaction between fashion (brand loyalty) and industry structure. We analyze how this interaction affects the importance of fashion in the market for a product in the different stages of its life and characterize conditions under which fashion loses or...