We model networks of relational (or implicit) contracts, exploring how sanctioning power and equilibrium conditions change under different network configurations and information transmission technologies. In our model relations are the links, and the value of the network lies in its ability to...

Product development within and across community-based and geographically dispersed virtual organizations is becoming an increasingly important mechanism through which individual knowledge holders create and disseminate knowledge in joint efforts to generate products. Without the benefits of...

In this essay we analyze the relation between long-term growth and institutional development. Relative backwardness has been a constant feature of the history of Latin America. In the wake of Independence the gap between Latin America and the industrializing world was already wide and widened...

We use several data sets to consider the effect of teaching practices on student beliefs, as well as on organization of firms and institutions. In cross-country data, we show that teaching practices (such as copying from the board versus working on projects together) are strongly related to...

This paper examines how networks of professional contacts contribute to the development of the careers of executives of European and US companies. We build a dynamic model of career progression in which career moves both depend upon existing networks and contribute to the development of future...

This paper examines the job finding methods of different ethnic groups in the UK. The theoretical framework shows that less-assimilated ethnic unemployed workers are more likely to use their friends and family as their main method of search but they have less chance of finding a job using this...

This paper investigates the determinants of group membership, and in particular the effect of income inequality on individual incentives to join economic groups. Drawing on a simple model, we show that an increase in inequality has an ambiguous effect and that the type of access rule (open...

Is social capital long lasting? Does it affect long term economic performance? To answer these questions we test Putnam’s conjecture that today marked differences in social capital between the North and South of Italy were due to the culture of independence fostered by the free city-states...

To explain the extremely long-term persistence (more than 500 years) of positive historical experiences of cooperation (Putnam 1993), we model the intergenerational transmission of priors about the trustworthiness of others. We show that this transmission tends to be biased toward excessively...

Lending to the poor is expensive due to high screening, monitoring, and enforcement costs. Group lending advocates believe lenders overcome this by harnessing social connections. Using data from FINCA-Peru, I exploit a quasi random group formation process to find evidence of peers successfully...