How should possible policy reforms and projects be assessed when prices give misleading signals? Revenues and costs at market prices then give distorted measures of social gains and losses and our appraisal should use social opportunity costs, or correctly defined, shadow prices. We show how...

The theory of cost-benefit analysis is widely used. It contributes to the understanding by giving a formal description of the subject and examining the theoretical basis for some of the techniques that have become the accepted tools of decision-making around the world. The aim of cost-benefit...