Comparison of Policy Implications: Stern vs. Nordhaus Discount Rates

Comparison of Ethical Frameworks in Stern's and Nordhaus's Discount Rates

Illustrating Scales of Economic Focus

A government is evaluating a climate change policy that requires a substantial immediate investment to prevent an estimated $50 trillion in environmental damages 150 years from now. An economist who agrees with the main criticisms leveled against the 2006 Stern Review's approach to valuing future outcomes is asked for their assessment. Which of the following conclusions is most consistent with that economist's perspective?

An economist argues that when evaluating long-term climate change policies, the well-being of future generations should be valued less than the well-being of the current generation. Based on this ethical stance, this economist would likely conclude that the 2006 Stern Review's recommendations for immediate, large-scale investment in climate mitigation were appropriate.

An economist argues that when evaluating long-term climate change policies, the well-being of future generations should be valued less than the well-being of the current generation. Based on this ethical stance, this economist would likely conclude that the 2006 Stern Review's recommendations for immediate, large-scale investment in climate mitigation were appropriate.

Critique of the Stern Review's Discounting Method

Evaluating Long-Term Infrastructure Investment

Critics of the 2006 Stern Review, such as William Nordhaus, argued for using a higher social discount rate. What is the direct analytical consequence of applying a higher discount rate when calculating the present value of long-term climate change damages?

Match each economic perspective on valuing future climate change impacts with its corresponding characteristic or implication.

Discount Rates and Policy Urgency

An economist critiques a major climate change report for using a very low social discount rate (e.g., 1.4%) to evaluate the costs and benefits of mitigation policies over centuries. Which of the following statements best articulates the fundamental economic objection to using such a low rate in this context?