School of Economics and Trade, Hunan University, Changsha, Hunan, China.
Business School, Hunan Normal University, Changsha, Hunan, China.
PLoS One. 2020 Jan 28;15(1):e0228023. doi: 10.1371/journal.pone.0228023. eCollection 2020.
This paper attempts to verify the "inverted U" effect of the income gap on the total factor productivity (TFP) of the country or region by constructing a theoretical model that includes income effects and substitution effects. Based on this, this paper uses the multinational panel data of 53 countries in the world from 1995 to 2014 for empirical research. The research shows that: (1) the income gap has an "inverted U-shaped" effect on the national TFP, and the inflection point is located at about 0.269; (2) The income gap is also verified by the "inverted U" influence mechanism of the national TFP by affecting the income effect and the substitution effect; (3) The difference in the development stage determines that countries should adopt an income distribution policy that is compatible with their own country. The conclusions of this paper strengthen the confidence and determination to improve the supply system and promote regional innovation, and confirm the necessity of promoting global economic restructuring and achieving global inclusive development to a certain extent.
本文试图通过构建一个包含收入效应和替代效应的理论模型，验证收入差距对国家或地区全要素生产率（TFP）的“倒 U”效应。基于此，本文利用世界 53 个国家 1995 年至 2014 年的跨国面板数据进行实证研究。研究结果表明：（1）收入差距对国家 TFP 具有“倒 U 型”影响，拐点位于 0.269 左右；（2）收入差距通过影响收入效应和替代效应，验证了对国家 TFP 的“倒 U”影响机制；（3）发展阶段的差异决定了各国应采取与本国相适应的收入分配政策。本文的结论增强了完善供给体系、促进区域创新的信心和决心，在一定程度上证实了推动全球经济结构调整和实现全球包容性发展的必要性。
