Intergenerational Discounting in Environmental Economics

Intergenerational Project Evaluation

A government is using an economic framework for choice over time to evaluate a major climate change mitigation project. The project requires substantial investment today but will primarily benefit generations living a century from now. In this framework, a specific interest rate is used to compare the value of future benefits to the value of present-day costs. What is the direct implication of choosing a very low interest rate (approaching zero) for this evaluation?

When applying the economic framework for optimal choice over time to evaluate climate change policies, the interest rate used to value the wellbeing of future generations is directly and uncontroversially set to equal the current market rate of return on investment.

Adapting Economic Choice Models for Intergenerational Policy

Two economists are advising a government on a long-term environmental project. Economist A argues for using a high interest rate to weigh the project's future benefits against its present costs, making the project seem less favorable. Economist B argues for a very low interest rate, which makes the project appear highly beneficial. What is the most fundamental source of their disagreement?

The Ethical Dimension of Intertemporal Economic Models

When economists adapt the standard model of choice over time (where the optimal point is where the Marginal Rate of Substitution equals the Marginal Rate of Transformation) to evaluate policies affecting future generations, such as climate change mitigation, the components of the model take on new meanings. In this specific intergenerational context, what does the Marginal Rate of Substitution (MRS) between consumption today and consumption in the future primarily represent?

A government official argues against a major climate change mitigation project, stating: 'The economic framework for choice over time shows that the rate for valuing future outcomes must equal the market rate of return on capital. Since current market returns are high, we must use a high interest rate to discount the project's distant benefits, making it economically unviable.' Which of the following statements provides the most accurate evaluation of this official's argument?

When the economic framework for optimal choice over time (where a decision-maker's willingness to substitute between present and future is balanced against the feasible trade-off) is adapted to evaluate policies affecting future generations, its core components are reinterpreted. Match each component of the framework to its specific meaning in this intergenerational context.

Evaluating Competing Long-Term Environmental Policies

When applying the economic framework for optimal choice over time to evaluate climate change policies, the interest rate used to value the wellbeing of future generations is directly and uncontroversially set to equal the current market rate of return on investment.

Adapting Economic Choice Models for Intergenerational Policy