This paper provides a set-theoretic model of knowledge and unawareness. A new property called Awareness Leads to Knowledge shows that unawareness of theorems not only constrains an agent's knowledge, but also, can impair his reasoning about what other agents know. For example, in contrast to Li...

Empirical research on group lending is extensive, but without allowance for collateral to mitigate strategic default. Indeed, lack of credit access has motivated microcredit in rural areas of developing countries, where agents with collateral are very rare. As rural communities have tight-knit...

In a global context foreign direct investment (FDI) and migration substitute one another in the matching process between workers and firms. However, as labor flows can lead to the formation of business networks, migration can actually facilitate FDI in the long-run. We first present a stylized...

Estimates for the U.S. suggest that in some sectors productivity enhancing reallocation is the dominant factor in accounting for productivity growth. An open question is whether reallocation is always productivity enhancing. Specifically, in developing countries, market concentration, or...

Import tariff receipts represent an important share of government revenues in many developing countries and there has recently been a surge in empirical studies showing how evasion in this field is a pervasive phenomenon. In the case of import tariffs, the tax base is the product of quantity and...

Is there an economic rationale for pronatalist policies? We propose and analyze a particular market failure that leads to inefficiently low fertility in equilibrium. The friction is caused by the lack of ownership of children: if parents have no claim on their children’s income, the...

In this note, we present a novel computerized real effort task based on moving sliders across a screen which overcomes many of the drawbacks of existing real effort tasks. The task was first developed and used by us in Gill and Prowse (forthcoming). We outline the design of our \slider task",...