Common mental health problems impose significant costs on individuals and societies, yet healthcare systems often overlook them. We provide the first causal evidence on the effectiveness of a pioneering, nationwide mental health service for treating depression and anxiety disorders in England...

The appraisal of public investments is subject to formal guidelines which often require input prices, such as forecasted energy prices. Using Danish guidelines as a case study, we explore the discounting assumptions in these input prices and find rates ranging from 2.97% to 17.5%, markedly...

In a paper delivered at the December 1955 meeting of the Econometric Society, Paul Samuelson noted that though economists had done "work of high quality and great quantity in the field of taxation," the theory of public expenditure had been "relatively neglected" (1958, 332). Anglo-American...

That climate policies are costly is evident and therefore often creates major fears. But the alternative (no action) also has a cost. Mitigation costs and damages incurred depend on what the climate policies are; moreover, they are substitutes. This brings climate policies naturally in the realm...

That climate policies are costly is evident and therefore often creates major fears. But the alternative (no action) also has a cost. Mitigation costs and damages incurred depend on what the climate policies are; moreover, they are substitutes. This brings climate policies naturally in the realm...

International concern about climate change has led to the Kyoto Protocol, negotiated in 1997, which contains legally binding emission targets for industrialized countries to be achieved during the commitment period 2008-2012. While proponents of the Protocol celebrate it as a breakthrough in...

HIV continues to cause the largest number of disability-adjusted life years of any disease in HIV hyperendemic countries (i.e., countries with an adult HIV prevalence 15%). We compare the benefits and costs of two proven biological interventions to reduce the health losses due to the HIV...

Using a dynamic model of the control of an infectious disease, we derive the conditions under which eradication will be optimal. When eradication is feasible, the optimal program requires either a low vaccination rate or eradication. A high vaccination rate is never optimal. Under special...

Distributions of language rights in multilingual settings are analyzed from a normative viewpoint in this chapter. If the cost structure of providing rights is concave in the number of beneficiaries, then a critical-mass criterion for the determination of an optimal rights structure results. It...

Despite spending far more on medical care, Americans live shorter lives than the citizens of other high-income countries. The situation has been getting worse for at least three decades. This paper describes the main scientific methods for guiding the allocation of resources to health -...