This paper introduces the concepts of amount and speed of a discounting procedure in order to generate well-characterized families of procedures for use in social project evaluation. Exponential discounting sequesters the concepts of amount and speed into a single parameter that needs to be...

This paper estimates the rate of discount to be used in Chile when evaluating long run projects with environmental consequences. The methodology is known as Gamma Discounting and was presented first by Martin Weitzman in the American Economic Review in March 2001.

Discounting enables to express future monetary or socio-economic effects in terms of present values when inter-temporal decisions are to be taken. In the context of the cost-benefit analysis, this allows for directly comparing net benefits expressed in terms of their net present values, and,...

This paper examines the social opportunity cost of a hypothetical public project in Australia and compares these values with the cost of the project as measured by factor prices. Since 2001, the Australian taxation system has included an ad valorem tax, the Goods and Services Tax, however...

This paper examines the social opportunity cost of a hypothetical public project in Australia and compares these values with the cost of the project as measured by factor prices. Since 2001, the Australian taxation system has included an ad valorem tax, the Goods and Services Tax, however...

The paper explores the consequences of limited substitutability in welfare between environmental and produced goods for long-term evaluation. I show how the magnitude and time development of optimal social discount rates depend on the substitutability between the different classes of goods. The...