V2EX comparative statics

Comparative Statics

Definition / 定义

“Comparative statics”(比较静态分析):经济学中一种分析方法,用来比较外生变量(如税率、收入、技术、偏好等)发生变化前后,模型的均衡结果(如价格、产量、消费、福利等)如何改变。它通常不描述调整过程的时间路径,只比较两个均衡点。(在更广义的用法中,也可指任何“参数变化 → 均衡比较”的静态分析。)

Pronunciation / 发音

/kmprtv sttks/

Examples / 例句

Comparative statics shows how the equilibrium price changes when demand increases.
比较静态分析说明当需求上升时,均衡价格会如何变化。

Using comparative statics in a general equilibrium model, we can predict how a tax affects wages, output, and consumer welfare across markets.
在一般均衡模型中运用比较静态分析,我们可以预测税收如何影响工资、产出以及跨市场的消费者福利。

Etymology / 词源

“Comparative”来自拉丁语 comparativus(意为“用于比较的”);“Statics”源自希腊语 statikos(意为“使静止的、平衡的”),在物理学里指研究静力平衡的“静力学”。经济学借用“静态/静力”的含义,强调,再用“比较”来表示对不同参数下的均衡进行对照分析,因此形成“comparative statics”。

Related Words / 相关词

Literary Works / 文学作品

  • Microeconomic Theory(Mas-Colell, Whinston, Green)
  • Microeconomic Analysis(Hal R. Varian)
  • Foundations of Economic Analysis(Paul A. Samuelson)
  • A Course in Microeconomic Theory(David M. Kreps)
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