361-362 of 362 Results

Article

What Drives HIV in Africa? Addressing Economic Gender Inequalities to Close the HIV Gender Gap  

Aurélia Lépine, Henry Cust, and Carole Treibich

Ending HIV as a public health threat by 2030 presents challenges significantly different to those of the past 40 years. Initially perceived as a disease affecting gay men, today, HIV disproportionately affects adolescents and young women in Africa. Current strategies to prevent HIV mostly rely on using biomedical interventions to reduce the risk of infection during risky sex and to address that biologically; women are more vulnerable to HIV infection than men. Ongoing policies and strategies to end the AIDS epidemic in Africa are likely to fail if implemented alone, given they fail to address why vulnerable young women engage in risky sexual behaviors. Evidence strongly suggests economic vulnerability, rather than income level, is a primary driver of women's decision to engage in commercial and transactional sex. By viewing HIV through the lens of structural gender inequality, poverty, and use of risky sexual behaviors to cope with economic shocks, a new explanation for the HIV gender gap emerges. New and promising approaches to reduce HIV acquisition and transmission by protecting women from economic shocks and increasing their ability to participate in the economy have proven effective. Such interventions are vital to break the pattern of unequal HIV transmission against women and if HIV is to be beaten.

Article

Willingness to Pay in Hedonic Pricing Models  

David Wolf and H. Allen Klaiber

The value of a differentiated product is simply the sum of its parts. This concept is easily observed in housing markets where the price of a home is determined by the underlying bundle of attributes that define it and by the price households are willing to pay for each attribute. These prices are referred to as implicit prices because their value is indirectly revealed through the price of another product (typically a home) and are of interest as they reveal the value of goods, such as nearby public amenities, that would otherwise remain unknown. This concept was first formalized into a tractable theoretical framework by Rosen, and is known as the hedonic pricing method. The two-stage hedonic method requires the researcher to map housing attributes into housing price using an equilibrium price function. Information recovered from the first stage is then used to recover inverse demand functions for nonmarket goods in the second stage, which are required for nonmarginal welfare evaluation. Researchers have rarely implemented the second stage, however, due to limited data availability, specification concerns, and the inability to correct for simultaneity bias between price and quality. As policies increasingly seek to deliver large, nonmarginal changes in public goods, the need to estimate the hedonic second stage is becoming more poignant. Greater effort therefore needs to be made to establish a set of best practices within the second stage, many of which can be developed using methods established in the extensive first-stage literature.