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社会贴现率的横截面含义

The Cross‐Sectional Implications of the Social Discount Rate
Econometrica · 2023 · Maya Eden

中文摘要

本文考察两个规范性问题:(1)政策制定者应如何处理涉及不同年龄群体的权衡取舍;(2)政策制定者应以何种比率对后代的消费进行贴现?我证明,在标准假设下,这两个问题是等价的:越重视未来,就意味着越不重视老年人。即使社会贴现率与市场利率之间仅存在微小差异,也可能对赋予不同年龄群体消费的相对价值产生显著的数量影响。

Abstract

In this paper, I consider two normative questions: (1) how should policymakers approach tradeoffs that involve different age groups, and (2) at what rate should policymakers discount the consumption of future generations? I demonstrate that, under standard assumptions, these two questions are equivalent: caring more about the future means caring less about the elderly. Even small differences between the social discount rate and the market interest rate can have significant quantitative implications for the relative value placed on the consumption of different age groups.
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