In this paper, we generalize the notion of Pareto-efficiency to make it applicable to environments with endogenous populations. Two efficiency concepts are proposed, P-efficiency and A-efficiency. The two concepts differ in how they treat people who are not born. We show how these concepts...

Consumers often benefit from increased competition in differentiated product settings. In this paper we consider consumer benefits from increased competition in a differentiated product setting: the spread of non-traditional retail outlets. In this paper we estimate consumer benefits from...

Ranking have become increasingly popular on markets for study programs, restaurants, wines, cars, etc. This paper analyses the welfare implication of such rankings. Consumers have to make a choice between two goods of unknown quality with exogenous presence or absence of an informative ranking....

Any demand equation satisfying Lau’s (1982) Fundamental Theorem of Exact Aggregation and 0° homogeneity in prices and income will have a Gorman (1981) functional form for each income term. This property does not depend on symmetry or adding up. The implications of this result are illustrated...

Collective household models posit that each household member has access to a fraction of the household budget, called a resource share, which defines the shadow budget faced by a household member. Together with the within-household shadow price vector, the shadow budget determines the material...

The paper looks at the change, the level and the structure of income distribution and distribution of consumption possibilities at the individual and at the household level between the years 1979 and 2000. I also pay attention to the development of low incomes when the concept of income is...

We extend the results on the cumulative distribution function and the expectation of the expenditure function in additive random utility models to cases of imperfect before-after correlation of the random terms, expenditure unrestricted in sign, and changing choice set. The results are of...

We propose a test of indirect reciprocity using US data on charitable activities in terms of both time and money. We find that expecting help from friends or relatives in the future positively affects the probability and the amount of charitable activities performed.

Income-based as well as most existing multidimensional poverty indices (MPI) assume equal distribution within the household and thus yield a biased assessment of individual poverty and poverty by age or gender. In this paper we first show that the direction of the bias depends on how these...

Nuclear meltdown in Japan and civil society strife across the Middle East highlight the degree to which resilience is core to international peace and security. This article considers the means by which communities can become increasingly resilient through shared best practices across a range of...