In a series of papers, Martin Weitzman has proposed a Dismal Theorem. The general idea is that, under limited conditions concerning the structure of uncertainty and preferences, society has an indefinitely large expected loss from high-consequence, low-probability events. Under such conditions,...

Some issues in the application of benefit–cost analysis (BCA) remain contentious. Although a strong conceptual case can be made for taking account of the marginal excess tax burden (METB) in conducting BCAs, it is usually excluded. Although a strong conceptual case can be made that BCA should...

Although benefit assessment principles are well established for specific populations, very little attention has been paid to how to define the scope of the pertinent population for such assessments. Whose social welfare matters and whose benefits should be included in the assessment? In the case...

The article first describes characteristics of major infrastructure projects. Second, it documents a much neglected topic in economics: that ex ante estimates of costs and benefits are often very different from actual ex post costs and benefits. For large infrastructure projects the consequences...

As EPA rolls out controversial regulations on power plant emissions of greenhouse gases, a vocal group of legislators, industry groups, and legal and economic scholars are crying foul, arguing that EPA didn't “follow the rules” when it conducted its cost-benefit analyses of these...

There are conflicting views on how to handle permits for greenhouse gases in cost-benefit analysis. This paper aims at clarifying within a simple general equilibrium model how to treat different kinds of trade-able permits in economic evaluations of projects. Within a framework that reminds of...

This paper monetizes the life-cycle intragenerational and intergenerational benefits of the Perry Preschool Project, a pioneering high-quality early childhood education program implemented before Head Start that targeted disadvantaged African-Americans and was evaluated by a randomized trial. It...

Consider a public project which produces a consumption good and which benefits future generations. Let a conventional cost-benefit analysis find that it gives higher benefits than projects it would displace in the private sector. Voters may nevertheless oppose the public project: the combination...

Since interventions by the public sector generally commit substantial societal resources, the evaluation of effects and costs of policy interventions is imperative. This paper outlines why program evaluation should follow well-respected scientific standards and why it should be performed by...

Do quality at entry assessments enhance the delivery of development projects? In this paper we take advantage of approval and execution systems in place at the Inter-American Development Bank (IDB) to examine whether projects that have higher quality at entry-captured through grading scores...