统计研究

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货币政策中介目标M2的修正和新生

黄宪 夏仕龙   

  • 出版日期:2015-04-15 发布日期:2015-05-21

Correction and Rebirth of Monetary Policy Intermediate Target M2

Huang Xian & Xia Shilong   

  • Online:2015-04-15 Published:2015-05-21

摘要: M2是传统的货币政策中介目标,然而,随着经济和金融环境的变化,它的有效性备受质疑。在没有更好的替代指标出现以前,探讨修正的M2是学术界的热点。迪维西亚法和现金等价法都是基于流动性总量的测度来修正简单加总法测度下的M2。本文通过更为简洁的模型推导,首次在构建原理上论证,在测度M2的流动性总量时,现金等价法的精确性明显优于迪维西亚法。本文还基于货币需求函数的稳定性和选择货币政策中介目标的可控性、相关性原则,对简单加总法、迪维西亚法和现金等价法测度下的M2的合理性进行实证比较,结果表明,现金等价法测度下的M2在货币需求函数的稳定性以及作为货币政策中介目标的可控性、相关性上都明显优于简单加总法和迪维西亚法测度下的M2。因此,本文认为,应该用现金等价法来修正传统M2,使其能够准确反映流动性总量的变化,提升其作为货币政策中介目标的效力。

关键词: M2, 现金等价货币总量, 迪维西亚货币总量, 货币政策中介目标

Abstract: M2 is the traditional intermediate target of monetary policy. However, its effectiveness is seriously doubted by the academic monetary authorities circle in the world with the change of economic and financial environment. The research on correction of M2 is a hot topic in the academic world until there is a better alternative target. Divisia Method and Currency Equivalent Method both correct M2 by Simple Sum Method based on measurement of the overall liquidity. The study proves for the first time on the model building that the accuracy of measuring the liquidity aggregates of M2 by Currency Equivalent Method is obviously better than Divisia Method. We also do empirical test on monetary aggregates by the three methods under the stability of money demand function and the two principals of controllability and relevancy as the intermediate target of monetary policy. The result suggests that a monetary aggregate by Currency Equivalent Method is better than that of the other two methods under the stability of money demand function, the controllability and the relevancy. So, this study suggests that the correction of M2 by Currency Equivalent Method is more suitable to be the intermediate target of monetary policy of monetary authority in China.

Key words: M2, Currency Equivalent Aggregates, Divisia Monetary Aggregates, the Intermediate Target of Monetary Policy