Objective: To find lower and upper bounds of HIV prevalence in Malawi under mild and intuitive assumptions to assess the importance of the refusal issue in the estimation of HIV prevalence. Methods: We derive bounds based on the following two key assumptions: (i) Among those who have never taken...

We consider a collective model of a household in which earn member has a utility function satisfying the weak separability condition. We show that the separability at the individual level carries over to the household level and that the allocation of private goods in any Pareto-efficient...

We simulate the impact of actual food price increase between June 2006 and June 2008 on poverty across different areas and whether the household’s main income source is agricultural activities. We explicitly treat heterogeneity in food price changes and the patterns of consumption and...

We extend the Arrow-Fisher-Hanemann-Henry (AFHH) and Dixit-Pindyck (DP) option values to game situations. By reinterpreting the AFHH option value as a change in the surplus from conservation because of the prospect of future information, we deal with the conceptual difficulty associated with the...

The remittances have emerged as one of the most important sources of international flows. In the Philipines, the amount of remittance receipts has more than doubled over a decade since early 1900s. As a result, the way remittances are used has become extremely important for economic development....

We propose a method to decompose the logarithmic change of the Divisia price index into the pure price effect, the prefernce effect and the substitution effect. Our empirical results in the Philippines shows the effects of preference change on the Divisia price index are heterogeneous but...

We consider a simple two-period model with irreversible investment with strategic interactions. In this setup, we try to extend the concept of the quasi-option value (QOV) by Arrow and Fisher (1974), Henry (1974), Fisher and Hanemann (1987) and Hanemann (1989) to a game-theoretic situation. In...

We investigate how childbirth affects intrahousehold resource allocation for married Japanese couples. We develop reduced-form and structural-form sepcifications from a unified theoretical framework. Under a weak set of assumptions, we can focus on private goods to track the changes in...

Estimating poverty measures for disabled people in developing countries is difficult,partly because relevant data are not available. We develop two methods to estimate poverty by the disability status of the household head. We extend the small area estimation proposed by Elbers, Lanjouw and...