| 收入不平等对经济增长的倒U型影响:理论和实证 |
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| 引用本文： | 刘生龙. 收入不平等对经济增长的倒U型影响:理论和实证[J]. 财经研究, 2009, 35(2) |
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| 作者姓名： | 刘生龙 |
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| 作者单位： | 清华大学国情研究中心,北京,100084 |
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| 基金项目： | 北京市科委博士生论文资助专项基金 |
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| 摘 要： | 文章致力于从理论和实证两个维度,探讨收入不平等对长期经济增长"先促进后阻碍"的"倒U型"影响.文章首先基于一个拉姆齐模型,从理论上证明这一"倒U型"关系的存在;其次是构建实证模型,根据跨国横截面数据,分别运用OLS和GMM估计方法从实证的角度检验这一"倒U型"关系的存在.实证结果显示:GMM估计方法要优于OLS估计方法,在其他条件不变情况下,收入不平等有一个合理区间,如果以基尼系数衡量不平等程度,这一数值处于0.37-0.40之间.当一国初始收入不平等程度低于最优值时,可以通过提高收入不平等程度来加快经济增长的速度;反之,则应通过降低收入不平等程度来促进经济的增长.
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| 关 键 词： | 收入不平等 经济增长 基尼系数 GMM估计 |
The Inversed-U Effect of Income Inequality on Long-term Economic Growth:From Theoretical and Empirical Perspectives |
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| LIU Sheng-long. The Inversed-U Effect of Income Inequality on Long-term Economic Growth:From Theoretical and Empirical Perspectives[J]. The Study of Finance and Economics, 2009, 35(2) |
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| Authors: | LIU Sheng-long |
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| Affiliation: | Center for China Study;Tsinghua University;Beijing 100084;China |
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| Abstract: | The paper is committed to explore the inverted-U effects of income inequality on long-run economic growth from the theoretical and empirical perspectives.Firstly,based on a Ramsey model,the paper proves that the inverted-U relationship does exist from the theoretical perspective.Secondly,it constructs an empirical model and collects cross-sectional data to test the inverted-U relationship by using OLS and GMM methods.The results show that GMM method is superior to the OLS method.With the other conditions re... |
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| Keywords: | income inequality economic growth GINI coefficient GMM estimation |
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