寒门难出贵子?——基于“家庭财富-教育投资-贫富差距”的实证研究

文章首次从教育选择的角度出发,探讨了人力资本投资与收入差距之间的关系,作者首先建立了教育回报的代际交迭模型,推断出富裕家庭教育回报率高这个事实会拉大社会的贫富差距。作者使用1992年至2009年的中国城镇住户调查数据对理论推论进行了论证,实证结果表明出身"寒门"的子女期望教育回报率更低,这拉大了与富裕家庭群体的收入差距,也是"寒门难出贵子"的原因。自2001年来,家庭因素带来的教育回报差异能够解释19.1%的城镇居民收入差距,引入工具变量的结果表明,真实的情况可能更加严重。作者进一步模拟了"新常态"下的贫富差距状况,结果表明,经济潜在增速下降会使得基尼系数扩大6.1%。     

The impact of education on income inequality and intergenerational mobility

This paper analyses the effects of innate ability, compulsory education (grades 1–9), and non-compulsory education (grades 10–12 and higher education) on inequality and intergenerational mobility of income, by constructing a four-period overlapping-generation model. We find that innate ability and family investment in early education play important roles in explaining income inequality and intergenerational income mobility. Though children from the wealthiest families are only 1.36 times ‘smarter’ that those from the poorest, the gap in human capital expands to 2.35 at the end of compulsory education and to 2.89 at the end of non-compulsory education. One important reason for the increase is that poor families invest relatively less in children's early education than do wealthy families; therefore, their children attend lower-quality schools, which results in them being much less likely to participate in higher education. By simulating policy experiments for different types of government education expenditure, we find that direct subsidies to poor parents are the most efficient and effective policy for mitigating poor families' budget constraints with regard to early-education investment in their children.     

Decomposition of the increase in earnings inequality in urban China: A distributional approach

This study examines changes in Chinese urban income distribution from 1987 to 1996 and 1996 to 2004 using nationwide household data and investigates the causes of these changes. The Firpo, Fortin, and Lemieux (2007, 2009) method based on unconditional quantile regressions is used to decompose changes in income distribution and income inequality measures, such as variance and a 10:90 ratio. The decomposition results show that wage structure effects, such as a widening gender earnings gap, increases in returns to college education, and increases in earnings differentials between industries, company ownership types, and regions, have been the major contributors to the overall increases in income inequality. It was also found that at different points on the income distribution (e.g., the lower or upper half), the contributing factors that increase income inequality are different.     

人力资本投资与收入不平等——教育质量不平等的影响

本文在人力资本理论和社会分层理论的基础上，建立个体从最大化个人效用出发，考虑地域间房屋租金和子女教育质量的差异，选择居住地的OGM模型。首先分析社会分层持续的条件和原因，进而分析教育质量的不平等对收入不平等的影响，最后，对中国教育质量的不平等进行统计性描述，并估计了区域性教育质量不平等对收入不平等的影响，发现教育质量差异对收入差异影响显著，而教育年限差异的影响对非东部地区的收入差异是不显著的，而对东部地区是显著的．     

Does decentralization reduce income inequality? Only in rich states

We investigate the relationship between fiscal decentralization and income inequality using data from U.S. states over three and a half decades. Our study contributes to the literature in several ways in terms of empirical methodology and specification. First, we take into account integration and cointegration properties of the data and estimate the cointegrating relationship between fiscal decentralization and income inequality using Fully Modified Ordinary Least Squares, following Pedroni (2000). Second, we investigate the direction of the causality. Finally, and perhaps most importantly, we investigate if the relationship between fiscal decentralization and income inequality is conditional on income in each state. We find that fiscal decentralization does reduce income inequality, but only in rich states. We also find that causality runs from fiscal decentralization to income inequality, not the other way around.     

Income inequality and happiness: Which inequalities matter in China?

The effect of inequality on happiness should intrigue social scientists. Of the many dimensions of income inequality, we explore four, analysing a rich data set for China. Does actual or perceived inequality have a greater effect on happiness? We find that perceptions of inequality are the more important. How broad is the reference group with which people compare themselves? They report that it is narrow; and indeed narrowly defined inequality has the greater effect on happiness. Do perceptions of the degree of fairness of inequality matter? They do, as they ameliorate the adverse effect of inequality on happiness, especially for the poorest. Is it self-centred or community-based inequality which affects happiness? Both measures have significant effects, but in opposite directions. The research and policy implications are discussed.     

Human capital investment in children: An empirical study of household child education expenditure in China, 2007 and 2011

Household education expenditure is an important component of human capital investment in children. In China, the rising child education expenditure and the subsequent financial burden on families have attracted much research and policy attention in the recent years. Using 2007 and 2011 data from the Urban Household Education Surveys, our empirical study provides new evidence on the education expenditure level, ratio of expenditure to household income, and inequality in this expenditure. We also elucidate changes in China's household education expenditure and explore factors associated with such changes. From the analysis, we obtain the following findings. First, education expenditure incurred outside the school significantly contributes to increasing household education expenditure. Second, compulsory education programs are effective in curbing in-school education expenditure; however, it does not prevent the rapidly increasing education investment outside school. Third, education expenditure disproportionally increases with family income. In other words, a larger share of the income earned by lower income families is spent on children's education, compared to higher income families.     

Informal employment and its effect on the income distribution in urban China

This paper discusses the issue of informal employment and its effect on the income distribution in China using datasets from the China Urban Labour Surveys of 2005 and 2010. Based on a new definition of informal employment, we estimated the proportion of informal employment relative to total non-agricultural employment in urban China and found it to be 49.7% in 2005 and 40.3% in 2010. Meanwhile, our study illustrated that informal employees' earnings were 67% that of formal employees, and this large earnings gap raised the Gini coefficient to 0.42 in 2005. The Blinder–Oaxaca decomposition result shows that the earnings gap explains more than half of the overall personal income inequality in urban China. These results indicate that informal employment has a significant effect on the income distribution in urban China. Consequently, regulating the labour market, eliminating job discriminations and legislating the informal employment should be considered as alternative means of reducing inequality in China.     

Testing the impact of financial inclusion on income convergence: Empirical evidence from Nigeria

Financial inclusion, as a key pillar for inclusive development, has long been considered as an important instrument for reducing poverty and income inequality. However, the income convergence effect of financial inclusion remains only partially explored. Using longitudinal data covering three survey waves on Nigerian households, this study explores the potential of financial inclusion as an instrument for reducing income disparity. After controlling for the endogeneity issues, the results of instrumental variable linear and quantile regressions consistently show a strong nexus between financial inclusion and per capita income. This positive effect is experienced by all households regardless of income distribution. The decomposition results reveal that ab initio, financial inclusion resulted in income divergence leading to widening inequality across the households with various income distributions. However, the income convergence started from the middle to the higher income household categories, with the lowest income lagging behind in the second wave. The lowest income households eventually converged in the data of the third wave. In this sense, it can be argued that financial inclusion could play an important role in the reduction of income inequality.     

艾滋病对我国社会经济影响

基于对我国艾滋病流行较为严重的五个省份进行的问卷调查,对比分析了931户感染者家庭和995户非感染者家庭的相关数据。研究发现,艾滋病对感染者个人及其家庭造成了极大的影响,如导致家庭结构改变、就业机会减少、劳动收入下降、医疗支出明显增大;同时也引发一系列社会经济问题,如贫富差距加大、性别不平等加剧、贫困家庭儿童教育机会减少及社会歧视扩大。最后提出了缓解艾滋病造成影响的对策建议。     

The determinants of income inequality in Thailand: A synthetic cohort analysis

This paper presents tests and estimates of the human capital model of income inequality using synthetic cohort data for Thailand: 1992–2011. The model focuses on four primary determinants of income inequality: mean per capita income levels, the variances in years of education, in the number of children, and in the number of earners in the household. All of these factors are important sources of income inequality in Thailand, with relative impacts that differ across demographic groups and types of household structure. An inverted-U relation between mean per capita income levels and inequality is found, reflecting gender differences of the head of household, differences in household composition, and variation in access to finance. Although the human capital model emphasizes education, estimates presented here show other household characteristics, such as number of children and number of earners, can be even more important sources of inequality.     

Income inequality and educational expenditures on children: Evidence from the China Family Panel Studies

Using the data from the China Family Panel Studies from 2010 to 2018, we find that rising income inequality causes parents to spend more on children’s education, both in school and out of school. The impact of income inequality on out-of-school expenditures is significant at intensive and extensive margins, especially for study-related tutoring participation. Furthermore, we find some empirical evidence suggesting that in response to rising inequality, mothers spend more time on children’s education and there exists a substitution effect between time and money. Further analysis suggests two potential reasons for the rising education spending: (1) a higher income inequality resulting from rising skill premium strengthens parents’ long-lasting cultural attitude towards education to higher levels, inducing them to spend more on educational investment, and (2) a higher income inequality increases the value of higher education, leading to a stronger demand for better educational opportunities, and then, more intense education competition, forcing parents to invest more in education.     

人口老龄化对城乡收入不平等的影响效应研究——基于中国二元经济结构演变的视角

理论分析表明,二元经济结构下人口老龄化能够通过要素禀赋结构调整和社会福利改善对城乡居民收入产生不同的收入效应和替代效应,进而影响城乡收入不平等。利用中国2000-2014年省际面板数据进行实证检验发现：中国人口老龄化显著的扩大了城乡收入不平等,但要素禀赋结构和社会福利水平对老龄化条件下的城乡收入不平等影响效应不同;随着对老年人口供养负担的加重,社会福利支出对老龄化条件下的城乡收入不平等主要表现为替代效应,城市偏向的社会福利支出使得农村因照料老人引起的劳动力供给减少扩大了城乡收入不平等;而要素禀赋结构的转变则使得老龄化主要表现为收入效应,劳动力相对资本的稀缺性导致转移劳动力工资上涨,从而缩小了城乡收入不平等;随着老龄化深化,通过社会福利改善和要素禀赋结构调整能够有效抵消老龄化对城乡收入不平等的负面影响;研究也证实了二元经济结构的优化和农业规模化经营对城乡收入不平等的缩小作用,而失业率上升和城乡投资差距却会加剧城乡收入不平等。     

Why is inequality higher among the old? Evidence from China

This paper studies income inequality in old age and its development over the life cycle. We show that income is more unequally distributed in old age than in working age. We combine the regression-based inequality decomposition method and the three-step mediating effect test to analyze the transmission of income inequality from initial socioeconomic differences to income inequality in old age. Our study is based on a panel of over 4000 old households from the China Health and Nutrition Survey during 1991–2015. We find that the urban-rural gap and educational inequality are the primary causes of old-age income inequality. The effect of the urban-rural gap is partially mediated by educational inequality. Inequality accumulates with age and is reinforced in old age by the fragmented Chinese public pension system.     

Intersectoral Transfer,Growth, and Inequality in Rural Ecuador

In this paper we study intersectoral transfer and its impact on the distribution of income in Ecuador. We find that income shares between farm and nonfarm activities are roughly equal, on average, although the rich in rural areas typically receive a greater share of income from nonfarm sources. Thus decomposing inequality by income source reveals that a rise in nonfarm incomes increases inequality. Drawing on a new method to estimate local-level distributional outcomes, growth of the high-productivity nonfarm sector is observed to have a strong and positive association with average consumption and inequality. Growth of the low-productivity nonfarm sector is associated with little change in either average income or income inequality. Irrespective of subsector, growth of the nonfarm sector is associated with a substantial fall in poverty.     

Demographic change and income inequality in the United States, 1976-1989

"The U.S. economy experienced significant increases in the degree of income inequality over the past two decades.... In this paper we consider the effects of race, age, female headship, and college education on the distribution of family income by developing a multivariate methodology that allows us to gauge the influence of one factor while holding other determinants of family incomes constant. Over the period studied we find that race had only a minor effect on the overall size distribution of income. Age had a somewhat greater effect than race. In contrast, the impact of female heads and college education were quite substantial. The multivariate estimates reveal that the effects of female heads and college education both increase the Gini to a much greater extent than the progressivity of federal income taxes decreases it. The effects of college education and female headed families on inequality have grown larger across time, while the influence of age has declined. We find that the effects of race on inequality have changed little over the 1976 to 1989 period."     

Finance and Income Inequality: What Do the Data Tell Us?

Although there are distinct conjectures about the relationship between finance and income inequality, little empirical research compares their explanatory power. We examine the relationship between finance and income inequality for 83 countries between 1960 and 1995. Because financial development might be endogenous, we use instruments from the literature on law, finance, and growth to control for this. Our results suggest that, in the long run, inequality is less when financial development is greater, consistent with Galor and Zeira (1993) and Banerjee and Newman (1993). Although the results also suggest that inequality might increase as financial sector development increases at very low levels of financial sector development, as suggested by Greenwood and Jovanovic (1990), this result is not robust. We reject the hypothesis that financial development benefits only the rich. Our results thus suggest that in addition to improving growth, financial development also reduces inequality.     

对外开放与我国的收入不平等——基于面板数据的实证研究

本文采用我国1991~2004年的省际面板数据,就收入不平等与对外开放之间的关系进行了实证检验,发现进出口的增加与外商直接投资的大量进入均导致了我国收入不平等程度的提高。以往的研究并没有将进口和出口的影响区分开来,本文分别分析了进口和出口对各地区收入不平等的影响,发现进口能够显著提高各地区的收入不平等程度,而出口能够在一定程度上减少收入不平等。文章最后就对外开放对我国收入不平等产生影响的可能途径进行了探讨,并提出了相关建议。     

Political and Economic Inequities and the Shaping of Institutions and Redistribution

This article studies the joint effect of political and economic inequalities on redistributive taxation and institutional quality. The theoretical model suggests that income inequality, coupled with political bias in favor of the rich, decreases redistribution and lowers institutional quality. The effect of the former is to increase productive investment, and the effect of the latter is to decrease it—with resulting ambiguous implications for economic growth. Testing these predictions empirically in a panel of countries, we find that inequality has a negative effect on both institutional quality and redistribution.     

In‐Group versus Out‐Group Trust: The Impact of Income Inequality

In this article, we adopt a variant of the trust game by Berg, Dickhaut, and McCabe (1995) and the dictator game by Cox (2004) to determine if income inequality can activate in‐group favoritism and, if so, whether such a bias is strong enough to survive the removal of income inequality. We find evidence of in‐group favoritism only on the part of rich first movers. Rich first movers trust their in‐group members significantly more in the presence of income inequality not only before but also after they gain enough experience. Poor first movers, in contrast, do not exhibit such in‐group bias. They do not discriminate between in‐group and out‐group at the very outset of the experiment, and once they become experienced, they behave with significantly more trust toward the rich than toward the poor. We also find that in‐group and out‐group favoritism established in the past can be alleviated, but not completely removed, by an equal income distribution.