We believe a lack of transparency undermines both the credibility of, and interest in,
stated choice studies among policy makers. Unlike articles reporting the results of
contingent valuation studies, papers in the stated choice literature rarely present simple
tabulations of raw response data (that is, a table or graph showing the percentage
of respondents agreeing to purchase a good or service, or vote for a proposed management
plan as a function of price).

Although it is well known that vaccines against many infectious diseases confer
positive economic externalities via indirect protection, analysts have typically
ignored possible herd protection effects in policy analyses of vaccination programs.
Despite a growing literature on the economic theory of vaccine externalities and
several innovative mathematical modeling approaches, there have been almost no
empirical applications.

This study measures the monetary value households place on preventing malaria in Tigray,
Ethiopia. We estimate a household demand function for a hypothetical malaria vaccine and compute
the value of preventing malaria as the household’s maximum willingness to pay to provide vaccines
for all family members. This is contrasted with the traditional costs of illness (medical costs and lost
productivity).

Many economic analyses of immunization programmes focus on the benefits in terms of public-sector
cost savings, but do not incorporate estimates of the private cost savings that individuals receive from
vaccination. This paper considers the implications of Bahl et al.'s cost-of-illness estimates for typhoid
immunization policy by examining how community-level incidence estimates and information on distribution
of costs of illness among patients and the public-health sector can be used in the economic

A contingent valuation survey of Thai adults revealed that private demand for a hypothetical AIDS vaccine that is safe, has no side effects, and lasts 10 years, rises with income, the lifetime risk of HIV infection and vaccine efficacy, and declines with vaccine price and respondent’s age.

In the summer of 2005, we interviewed 996 randomly selected respondents in Beira, Mozambique concerning their willingness and ability
to pay for cholera vaccine for themselves and for other household members. Respondents were told that two doses of the vaccine would be

The demand function for vaccines against typhoid fever was estimated using stated preference
data collected from a random sample of 1065 households in Hue, Vietnam, in 2002. These are the first
estimates of private willingness-to-pay (WTP) and demand functions for typhoid vaccines in a
developing country.

This paper analyses the impact of income inequality on public good provision in an experimental setting. A sample of secondary school students were recruited to participate in a simple linear public goods game where income heterogeneity was introduced by providing participants with unequal token endowments.

The European Union has been relatively cautious about using biotechnology in food production. A label regime combined with the right of individual member states to ban introduction of new genetically modified (GM) strains means thatGMfood products in effect are banned in many countries.

We show how it is possible to empirically test whether a ban can be motivated by reference to potential negative externalities. This is followed up by results from a choice experiment.We cannot reject the hypothesis of equal WTP for a ban and a labeling scheme.

In the highlands of Ethiopia, livestock as an important component of the mixed farming system perform multiple functions providing high quality food, draft power and manure for crop production, and cash income. Field studies in different parts of the country in the 1980s showed that livestock account for 37-87% of total farm cash income of farmers, indicating the importance of livestock in rural livelihood, especially as one moves from mixed farming in the highlands to agropastoral systems on the highland-lowland margins (Gryseels, 1988).