关键词: 凯恩斯乘数, 投入产出技术, 局部闭乘数, 宫泽乘数

Abstract: Miyazawa multiplier and semi-closed multiplier are two mainly used methods in structuring Keynesian multiplier by input-output technique. How to choose a suitable one from the two methods is vital for economic problems analysis. It requires studying their economic implications and differences. The economic implication of Miyazawa multiplier is discovered deeply by many works, while few are done for semi-closed multiplier, although it is used extensively. This paper investigates the implication of semi-closed input-output multiplier and the differences between the two methods. The main conclusions are: (1) semi-closed multiplier takes the industrial differences of primary income distribution into consideration, or the effects of primary income distributions of different sectors are implied in the model; (2) under the assumption that there exists no difference in industrial primary distributions, the semi-closed multiplier is equivalent to Miyazawa multiplier. These conclusions specify the differences of the two methods for structuring Keynesian multiplier, and the theoretic bases of policy analysis by structuring Keynesian multiplier with input-output model.

Key words: Keynesian Multiplier, Input-output Technique, Semi-closed Multiplier, Miyazawa Multiplier