In the past 30 years, microfinance has carried many promises of social and economic transformation, with the shift towards targeting women being seen as a major strategic move through which the promise of social development could be most effectively delivered.  However, ethnographic studies...

This paper addresses the question as to why we observe such large differentials in earnings in urban African labour markets after controlling for observable human capital.  We first use a three year panel across Ghana and Tanzania and find common patterns for both countries assuming that...

This paper investigates the role of learning - through formal schooling and time spent in the labor market - in explaining labor market outcomes of urban workers in Ghana and Tanzania.  We investigate these issues using a new data set measuring incomes of both formal sector wage workers and the...

An individual's learning rule is completely uncoupled if it does not depend on the actions or payoffs of anyone else.  We propose a variant of log linear learning that is completely uncoupled and that selects an efficient pure Nash equilibrium in all generic n-person games that possess at least...

Samuelson and Solow published a widely read paper in the May issue of the American Economic Review of 1960. It discussed the causes of inflation, the Phillips curve, and related matters. Discussion of their paper frequently says that it presented the Phillips curve as a stable, exploitable...

There has been a dramatic surge in Islamic participation and values since the 1970s.  We propose a theory of the contemporary Islamic revival based upon two forms of relative deprivation - envy and unfulfilled aspirations.  To analyze these motivations, a behavioral model of religion is...

It is often claimed that large buyers wield buyer power.  Existing theories of this effect generally assume upstream monopoly.  Yet the evidence is strongest with upstream competition.  We show that upstream competition can yield buyer power for large buyers by generating supplier-level...

In many rural settings, informal mutual support networks have evolved into semiformal insurance groups, such as funeral societies.  Using detailed panel data for six villages in Ethiopia, we can distinguish two types of contracts, in terms of whether payments are only made at the time of death...