V2EX deadweight loss

Deadweight Loss

释义 Definition

无谓损失(也称“死重损失”):由于市场扭曲(如税收、价格管制、垄断、外部性等)导致的总剩余(消费者剩余+生产者剩余)净减少。这部分损失不会转化为政府收入或企业利润,而是“凭空消失”的效率损失。(该术语在不同情境下也可指更广义的资源浪费,但最常见用法是经济学中的效率损失。)

发音 Pronunciation (IPA)

/ddwet ls/

词源 Etymology

“Deadweight” 原意是“无法发挥作用的重量/累赘”,在经济学里引申为“不产生任何有益结果的负担”;“loss” 是“损失”。合起来强调:这类损失不像税收那样转移到政府,也不像利润那样转移到企业,而是社会福利的净消耗。该表达在现代福利经济学与微观经济学分析中被系统化,用来描述供需模型中因扭曲产生的三角形效率损失。

例句 Examples

A tax can create deadweight loss.
税收可能会造成无谓损失。

When a price ceiling is set below equilibrium, the resulting shortage and reduced trade can generate a significant deadweight loss by preventing mutually beneficial transactions.
当价格上限被设定在均衡价之下时,由此产生的短缺与交易减少会阻止互利交换,从而带来显著的无谓损失。

相关词 Relate Words

文学与著作中的使用 Literary Works

  • Principles of Economics N. Gregory Mankiw
  • Intermediate Microeconomics: A Modern Approach Hal R. Varian
  • Microeconomic Theory Andreu Mas-Colell, Michael D. Whinston, Jerry R. Green
  • Economics Paul A. Samuelson, William D. Nordhaus
  • Microeconomics Robert S. Pindyck, Daniel L. Rubinfeld
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