The effects of the HIV/AIDS epidemic on fertility in Africa remains ill understood. To align the contrasting findings of recent empirical research, we develop a portfolio model that captures the potential trade-off between "quantity" and "quality" of offspring. According to this theoretical...

In African health care the "miracle of the market" has not occurred. Patients exhibit willingness to pay for quality health care and yet good private practitioners are unable to sell their services. Simultaneously nongovernmental organizations (NGOs) are running successful health facilities for...

The benefit of health care comes not just from the ability of health care providers to produce health but from their motivation to do so as well. The fact that traditional healers in Africa are paid on the basis of health outcomes not services provided changes the incentives they face compared...

We present a theoretical model of moral hazard and adverse selection in an imperfectly competitive loans market that is suitable for application to Africa. The model allows for variation in both the level of contract enforcement (depending on the quality of governance) and the degree of market...