从剑桥方程到斯拉法超级乘数——需求拉动型经济增长理论评述

From the Cambridge Equation to the Sraffian Supermultiplier:A Critical Survey of Demand-led Growth Theories

剑桥方程、新卡莱斯基增长理论和斯拉法超级乘数以凯恩斯假定取代新古典增长理论的萨伊定律,为有效需求拉动经济增长提供了理论依据,可以统称为需求拉动型经济增长理论。这些理论在凯恩斯假定的实现机制、对经济增长的解释、产能利用率等方面存在一些差异,各理论也具有各自的缺陷和局限性。尽管如此,相对于新古典经济增长理论,需求拉动型经济增长理论对于解释、分析中国经济增长问题更具借鉴意义。

The Cambridge equation,the neo-Kaleckian growth theory and the Sraffian Supermultiplier provide a theoretical basis for the theory of effective demand-led growth by replacing the Say’s law in neo-classical growth theory with the Keynesian Hypothesis,and these theories can all be referred to as demand-led growth theories.The above-mentioned theories have their differences in the mechanism of the Keynesian Hypothesis,the explanation of economic growth,capacity utilization,etc.and they all have their own defects and limitations.However,compared with the neoclassical growth theory,these demand-led economic growth theories may provide a better framework for explaining and analyzing China’s economic growth.