收入不平等对经济增长影响的实证研究

采用联立方程分析方法,实证分析了收入不平等对经济增长影响的三种机制,探讨了收入不平等如何通过影响物质资本投资、人力资本投资和居民消费来作用于经济增长。结果表明,从长期看收入不平等的扩大会刺激物质资本投资,但不利于人力资本投资和居民消费增长,收入不平等对经济增长的长期影响为负。因此,从经济发展的角度政府不应容忍收入不平等的过分扩大。     

Inequality and Growth: What Can the Data Say?

This paper describes the correlations between inequality and the growth rates in cross-country data. Using non-parametric methods, we show that the growth rate is an inverted U-shaped function of net changes in inequality: changes in inequality (in any direction) are associated with reduced growth in the next period. The estimated relationship is robust to variations in control variables and estimation methods. This inverted U-curve is consistent with a simple political economy model but it could also reflect the nature of measurement errors, and, in general, efforts to interpret this evidence causally run into difficult identification problems. We show that this non-linearity is sufficient to explain why previous estimates of the relationship between the level of inequality and growth are so different from one another.     

Income Inequality and Economic Growth: Evidence from American Data

While most cross-country studies find a negative relationship between income inequality and economic growth, studies that use panel data suggest the presence of a positive relationship between inequality and growth. This paper uses a cross-state panel for the United States to assess the relationship between inequality and growth. Using both standard fixed effects and GMM estimations, this paper does not find evidence of a positive relationship between inequality and growth but finds some evidence in support of a negative relationship between inequality and growth. The paper, however, shows that the relationship between inequality and growth is not robust and that small differences in the method used to measure inequality can result in large differences in the estimated relationship between inequality and growth.     

收入分配不平等、有效需求与经济增长——一个基于中国经济转型期的实证研究

本文从有效需求角度入手,探究中国经济转型期经济增长与收入分配不平等之间的关系,并运用中国1978-2005年间28个省市的面板数据,通过面板数据单位根检验、协整检验与误差修正模型,对中国经济增长与收入分配不平等、有效需求、劳动力、投资、教育以及收入分配不平等和有效需求交互影响之间的长期关系和短期关系进行了研究。结果显示,中国经济转型期经济增长与收入分配不平等、有效需求具有长期的均衡关系,收入分配不平等通过有效需求机制阻碍了经济增长,且在短期内效果也非常显著。     

收入不平等对经济增长的倒U型影响:理论和实证

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.     

Inequality and Growth in a Panel of Countries

Evidence from a broad panel of countries shows little overall relation between income inequality and rates of growth and investment. For growth, higher inequality tends to retard growth in poor countries and encourage growth in richer places. The Kuznets curve—whereby inequality first increases and later decreases during the process of economic development—emerges as a clear empirical regularity. However, this relation does not explain the bulk of variations in inequality across countries or over time.     

中国经济增长与收入差距关系的经验研究

经济增长与收入差距的关系是一个古老而又充满活力的问题。研究发现,尽管全国总量时序数据的Granger因果关系检验表明,中国的经济增长与收入差距不存在任何方向的因果关系,但以各省GDP增长率和城乡收入比为观测点的面板数据检验结果显示:不论是在短期还是在长期,收入差距的扩大都是引起经济增长的Granger原因;经济增长在短期会引起收入差距的扩大,但从长期看,有助于收入差距的缩小。     

The Division of Labor, Inequality and Growth

We present a model that links the division of labor and economic growth with the division of wealth in society. When capital market imperfections restrict the access of poor households to capital, the division of wealth affects individual incentives to invest in specialization. In turn, the division of labor determines the dynamics of the wealth distribution. A highly concentrated distribution of wealth leads to a low degree of specialization, low productivity, and low wages. In that case workers are unable to accumulate enough wealth to invest in specialization. Hence, in a highly unequal society, there is a vicious cycle in which the degree of specialization, productivity and wages stay low, wealth and income inequality stays high and the economy stagnates. By contrast, greater equality increases investment in specialization and leads to a greater division of labor and higher long run development.     

Research on the Impact of Innovation Drivers on the Quality of Economic Growth in China

The quality of economic growth is a prominent issue in the process of economic growth worldwide.This paper builds relevant econometric models and uses the provi...     

保险增长对中国工业企业技术创新的影响

以规模以上工业企业和大中型工业企业的年度专利申请数衡量工业企业技术创新能力,以保险深度度量保险增长水平,运用空间计量经济模型对中国大陆31个省(市、自治区)的截面数据进行分析,结果显示:中国各地区之间工业企业的技术创新能力在空间上并非随机分布,而是呈现出明显的空间自相关关系,保险增长对工业企业技术创新能力的提高具有显著的促进作用。     

The Effect of Better Information on Income Inequality

We consider an OLG economy with endogenous investment in human capital. Heterogeneity in individual human capital levels is modelled by a distribution of innate ability across agents. This distribution is common knowledge but, at young age, no agent knows his/her ability. The production of human capital depends on each individual’s investment in education. This investment decision is taken only after observing a signal which is correlated to his/her true ability, and which is used for updating beliefs. Thus, a better information system affects the distribution of human capital in each generation. Assuming separable and identical preferences for all individuals, we derive the following results in equilibrium: (a) If the relative measure of risk aversion is less (more) than 1 then more information raises (reduces) income inequality. (b) When a risk sharing market is available better information results in higher inequality regardless of the measure risk aversion. We are grateful to Alex Cukierman, Zvi Eckstein, Yona Rubinstein and Daniel Tsiddon. An anonymous referee made extremely useful comments and suggestions. Financial support from the German-Israeli Foundation for Scientific Research and Development (GIF) is gratefully acknowledged.     

增长速度与增长转型:孰轻孰重?--关于中国GDP调增的冷思考

经过经济普查,2004年中国GDP调增16．8％。GDP调大虽然使一些比例关系得到优化并有利于今后的科学决策。但是,我们应该清醒地看到,GDP调大并不表示财富从天而降,更不意味着GDP制造过程中的诸多问题自动清零,调整增长战略、创新增长方式,应该成为我们最大的追求。     

The dynamic effects of general purpose technologies on Schumpeterian growth

General purpose technologies (GPTs) are drastic innovations characterized by pervasiveness in use and innovational complementarities. The dynamic effects of a GPT are analyzed within a quality-ladders model of scale-invariant Schumpeterian growth. The diffusion path of a GPT across a continuum of industries is governed by S-curve dynamics. The model generates a unique, saddle-path long-run equilibrium. Along the transition path, the measure of industries that adopt the new GPT increases, consumption per capita falls, and the interest rate rises. The growth rate of the stock market depends negatively on the rate of GPT diffusion and the magnitude of the GPT-ridden R&D productivity gains; and positively on the rate of population growth. It also follows a U-shaped path during the diffusion process of the new GPT. Finally, the model generates transitional growth cycles of per capita GNP.JEL Classification: E3, O3, O4I would like to thank Elias Dinopoulos for encouragement, and for constructive comments and suggestions. I would also like to thank David Figlio, Douglas Waldo, Steven Slutsky and participants in the 9th Biennial Congress of the International Schumpeter Society for useful discussions and suggestions. Any remaining errors are my own responsibility.     

财政分权对中国收入差距的影响——基于居民收入基尼系数的实证分析

文章在财政分权理论的框架下,利用21个省市区1995～2004年间的面板数据,实证检验了财政分权对中国收入不平等的影响。结果发现：财政分权对中国居民收入差距的整体扩大起到推动作用,但对西部地区的整体和农村的收入差距具有抑制作用;经济发展水平、人口浓度、人力资本和城市化等控制变量对收入差距也有不同的影响。     

Democratic Choice of an Education System: Implications for Growth and Income Distribution

We use an OLG model to examine democratic choice betweentwo modes of government support for education: subsidies forprivately purchased education and free uniform public provision.We find little conflict between democracy and growth: the samefactors that generate popular support for subsidization overfree uniform provision—large external benefits, a largeexcess burden, and little inequality—also favor its relativegrowth performance. Furthermore, restricting the franchise toan upper-income elite may also reduce growth. Two extensionsexamine the effect of intergenerational mobility and indicatethe theoretical possibility of periodic swings in the balancebetween public and private spending.     

外生冲击对中国经济增长周期的影响

本文分析了外生冲击对中国经济增长及其周期的影响,指出整体性、持久性的冲击将对经济产生较大影响;暂时性的外生冲击对中国经济有影响,但不会太大;中国经济的长期运行趋势不会轻易改变。同时提出了建立冲击预警机制和健全危机管理体系、增强经济系统抵御和化解冲击能力等一系列应对外生冲击,确保中国经济稳定运行的策略建议。     

创新、创造性破坏与内生经济变迁——熊彼特主义经济理论的发展

熊彼特曾试图建立一个以创新为动力的内生经济变迁理论。在沉寂多年以后,熊彼特的这一经济理论在20世纪90年代以后复活。演化新熊彼特主义借用生物学隐喻构建了企业的行为模式,使创新得以内生化,并类比生物学中的自然选择过程描述了经济动态过程。新古典熊彼特主义增长理论则将熊彼特"创造性破坏"思想模型化,通过引入研发生产函数和对创新组织的探讨将技术创新内生化,深入地研究了与经济增长相关的市场结构问题。三支理论在方法论和学术传统上的差别导致了它们对创新机制以及经济变迁的不同理解。文章系统地梳理了熊彼特主义经济理论的主要发展并对之进行了比较、评价和展望。     

The Uncertainty of Academic Rent and Income Inequality: The OECD Panel Evidence

The article presents an alternative view on the education—income inequality relationship, which calls into question the neoclassical claim that education increases labor productivity and hence contributes to a higher output, wage and consequently more even income distribution. In the context of public policies, education needs to be seen not only as a factor of income mobility, but also as a “positional good,” which benefits graduates at the expense of non-graduates. Education generates “academic rent,” by which we mean uneven remuneration of workers based on academic signs of distinctions that do not necessarily reflect differences in productivity. Using the robust panel model on a sample of OECD (Organization of Economic Co-operation and Development) countries from 1980 to 2015, we show that investments in human capital lead to lower inequality, but overinvestments tends to increase income inequality, which may be related to academic rent. In discussing this result, we consider that uncertainty of academic rent under the condition of a rapid transformation of the workplace caused by the fourth industrial revolution.     

技术创新和制度创新的组合对企业持续成长的影响——基于墒理论和耗散结构理论的视角

企业持续成长是企业实现其他目标的前提。技术创新学派或制度创新学派分别强调技术创新或制度创新对企业成长的作用，忽视了二者的协同对企业成长的作用．本文借用熵理论和耗散结构理论，在提出企业技术熵、制度熵、技术负熵、制度负熵、协同负熵等概念的基础上，分别研究了企业的技术创新与制度创新的不同组合对企业持续性和成长性的影响，并对此进行了比较。最后应用所构建的模型分别对于生命周期处于闭区间和开区间的企业成长性和持续性进行了研究，并推导出了企业进行技术创新和制度创新的最佳时间，临界点。     

Inequality and income: The mediating effects of social spending and risk

This paper estimates models of social spending, income risk, and per capita income levels using data from a post-war panel of OECD (Organisation for Economic Cooperation and Development) countries. The objective is to test two theories about the pathway from inequality to per capita income. According to one theory, inequality reduces incomes because it induces social spending, which acts as a drag on the economy. The results here suggest, however, that inequality does not seem to induce social spending, and social spending does not seem to lower per capita incomes. According to a second theory, inequality causes upheaval which adds to the volatility of per capita income, which may reduce the level of per capita income. The results suggest, however, that volatility, measured here as the standard deviation of per capita income, has little measurable impact on either per capita income or social spending. The mainsprings of per capita income are more likely to be the traditional factors: the work force, human capital, and physical capital.
JEL classification: E6.