统计研究 ›› 2023, Vol. 40 ›› Issue (4): 60-72.doi: 10.19343/j.cnki.11–1302/c.2023.04.005

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发展中国家的金融深化与收入不平等——基于58个发展中国家面板数据研究

曾小倩 黄云英 桂文林 朱丰毅   

  • 出版日期:2023-04-25 发布日期:2023-04-25

The Impact of Financial Deepening on Income Inequality: Research Based on the Panel Data of 58 Developing Countries

Zeng Xiaoqian Huang Yunying Gui Wenlin Zhu Fengyi   

  • Online:2023-04-25 Published:2023-04-25

摘要: 探讨金融深化对收入不平等的作用机制可为政府制定金融发展战略提供理论依据,有利于合理再分配与增进人民福祉。本文根据金融开放型经济的理论模型,定义内生的经济增长率,并扩展其对收入不平等水平的影响。随后选取58个发展中国家的平衡面板数据并采用系统性广义矩估计(SYS-GMM)方法进行实证检验。结果表明,金融深化会加剧收入不平等现象,并且以私人银行信贷衡量的金融深化对收入不平等的影响取决于实际利率(r)与实际GDP增长率(g)之间的差距,当金融深化程度越高时,rg?值越大将导致收入不平等的程度减少。因此从政策角度来看,发展中国家可以通过使得rg?值为正的情况下进一步扩张银行信贷来缓解收入不平等状况。

关键词: 金融深化, 收入不平等, 银行信贷

Abstract: Exploring the impact mechanism of financial deepening on income inequality provides a theoretical basis for the government to formulate financial development strategies, which is conducive to rational redistribution and improving people?s well-being. Based on the theoretical model of the financial open economy, the article defines its endogenous economic growth rate and expands its impact on the level of income inequality. Then we select the panel data of 58 developing countries and use the SYS-GMM (Systematic Generalized Moments Estimation) method for empirical testing, and the results show that financial deepening plays a role in promoting income inequality, and the impact of financial deepening is measured by private bank credit on income inequality is determined by the gap between real interest rates (r) and real GDP growth (g). When the degree of financial deepening is higher, the greater the value of (r?g), that is, the greater the gap between the real interest rate and the GDP growth rate, the less in income inequality. Therefore, from a policy perspective, inequality can be reduced by further expanding bank credit in developing countries while the (r?g) value is positive.

Key words: Financial Deepening, Income Inequality, Bank Credit