Terrorism and spatial disparities: Does interregional inequality matter?

This article examines the relationship between interregional inequality and the incidence of domestic terrorism in a panel of 48 countries over the period 1990–2010. The results show that a high level of interregional inequality increases the number of domestic terror events in the sample countries. This finding is robust to the inclusion of additional explanatory variables that may affect both interregional inequality and domestic terrorism. Furthermore, the observed link between interregional inequality and terrorist activity does not depend on the choice of the specific measure used to quantify the degree of dispersion in the regional distribution of GDP per capita within the sample countries.     

CHINESE REGIONAL INEQUALITIES IN INCOME AND WELL-BEING

Dividing China into seven regions reveals rural income and consumption divergence for both 1980–2005 and 2000–05. But while real rural consumption growth averaged 7.7 percent over 1985–2005 in the eastern coastal region, it averaged 6.5 percent uniformly in the interior. In evaluating well-being, such rapid improvement in all regions arguably overshadows negative connotations of divergence. Twenty years of household survey data reveal dramatic increases in rural household savings, as rural consumption improved more slowly than income in some periods. This raises questions about the suitability of consumption as a basis for measuring well-being and its distribution. Increased savings appear to be transient, as some households save while others dissave to purchase durables and afford lumpy services like education and healthcare—supplies of which became more plentiful in the 1990s. The paper argues that more meaningful measures of regional disparities come from differences in regional poverty headcounts. It also suggests that higher regional inequality and accompanying interregional migration indicate that inequality plays an important positive role in inducing economic actors voluntarily to move to more productive locations and activities as a mechanism for ensuring sustainable improvements in individual well-being.     

Income-related inequalities of health and health care utilization

By utilizing the China Health and Nutrition Survey (CHNS) data, this paper examines the extent of deviations in terms of horizontal equity in the field of China’s health and medical community, i.e., that those in equal demand ought to be treated equally, and computes the contribution of income in health inequality and utilization inequality of health care. The main conclusions are: There is pro-rich inequality in health and utilization of health care; income contribution to inequality of health care utilization accounts for 0.13–0.2; insurance also enlarges the inequality of health care utilization; health inequality in rural area is larger than that of in urban area; and both rural and urban health inequality are increasing. From 1991 to 2006, income changes in urban districts and rural area account for 7.08% and 13.38% respectively of raising inequality of rural and urban health.     

福建省区域经济差异演化及其动力机制的空间分析

通过探索性空间数据分析得出福建省区域经济发展的空间自相关程度呈不断强化的发展趋势;局部空间自相关分析表明,内陆地区原有的高水平发展集聚区逐渐消失,而沿海地区则出现新的高水平发展集聚区,省域外围地区则由于区位和交通条件等原因一直处于落后的发展状态;通过传统线性回归模型、空间滞后回归模型和空间误差回归模型三种回归模型对福建省区域经济发展机制进行定量测度,其中空间滞后回归分析具有较强的显著性。回归分析结果表明区位、城市化水平、分权化和全球化在福建省区域经济差异的演变过程中扮演着显著的作用,其中FDI的对区域发展的影响更集中于沿海的核心地区,而分权化、城市化水平和区位要素则更趋向于在全省范围内产生影响。     

Regional Income Disparity and the Size of the Public Sector

This paper explores the impact of income inequality between jurisdictions on government decision making affecting the size of the public sector. We model policy choices as the outcome of regional representatives' negotiations in the legislature. We show that the more unequal interregional income distribution is, the greater the underprovision of public goods. More specifically, greater interregional income disparity leads to a smaller public sector. A wealthier economy as a result may have a relatively smaller government size when income disparity increases.     

中国农村的收入差距与健康

随着收入差距的扩大,收入分配对健康和健康不平等的影响日益受到关注。本文利用中国健康营养调查(CHNS)1997年和2000年农村的面板数据回答两个问题:收入差距对健康的影响以及影响健康的方式;收入差距的扩大是否会导致健康不平等的加剧,尤其是低收入人群的健康是否受到更为不利的影响。研究发现,首先收入差距对健康的影响存在滞后效应;其次,收入差距对健康的影响呈现“倒U”型,在收入差距较高时,收入差距对健康的影响主要为负向的,一个可能的原因是收入差距影响到公共卫生设施的供给。再次,收入差距的扩大会加强收入效应,其含义是如果低收入人群的收入更容易受到负向冲击,那么收入差距对低收入人群的健康更为不利。     

医疗卫生基本公共服务的城乡差距及均等化路径

当前,我国城乡之间的医疗卫生服务不均等已成为一个重要的社会问题。本文通过医疗卫生费用和医疗卫生资源的城乡数据分析得出城乡之间的医疗卫生公共服务差距巨大,并通过2000—2008年城乡医疗保健费用的泰尔指数分析,发现城乡组间对城乡医疗卫生公共服务差距的贡献基本上在80%以上,几乎是组内差距贡献的4倍,而从两组的内部差距来看,农村内部的不均等程度要稍高于城市内部的不均等程度,根据分析结果并从财政向农村医疗卫生的投入倾斜、城乡医疗保险制度的整合、医疗体制的深化改革等方面就如何促进医疗卫生公共服务城乡均等化进行探讨。     

收入、收入不均与健康:城乡差异和职业地位的影响

本文使用来自中国9个省的微观面板数据,检验了居民自评健康与家庭人均收入和社区内收入不均之间的相关关系。考虑到中国城乡分割的二元经济社会特征,本文将农村样本和城镇样本分开处理;考虑到中国的社会分层结构,计量方程中引入了代表职业地位的变量及其与收入和收入不均的交互项。在实证结果的基础上,本文讨论了收入、收入不均与健康关系的作用机制。主要结论是:收入与健康的关系、收入不均与健康的关系都存在城乡差异和职业差异,这说明在收入、收入不均与健康的关系中,社会经济地位的影响十分重要。要解决健康不平等问题,关键在于加强对社会经济地位较低者,主要是农村居民和生活在城镇的农民的医疗保障,同时要设法改善农村的基础设施和社会资本,并逐步取消各种造成城乡分割的制度。     

Changes in Inequalities of Access to Dental Care in Australia 1977–2005

Information on dental visits, income and demographic variables were drawn from the Australian National Health Survey between 1977 and 2005. Income‐related inequality in access to dental care was calculated using the generalised concentration index (G) and decomposition methods were employed to examine associations with socio‐demographic and policy‐amenable factors. Statistically significant increases in inequality in dental care use were found after 1995. From 0.026 in 1995, G increased to 0.045 in 2005. The associations between increases in inequality and changes in the uptake of private health insurance suggest a contributory role of the introduction of the Commonwealth government's 30 per cent rebate for private health insurance.     

A natural experiment of the effect of advertising on sales: the SASOL case

China's so-called ‘reform and opening up’ policy (Gai Ge Kai Fang), implemented nearly 30 years ago, has led to tremendous economic development. China's nominal Gross Domestic Product (GDP) was 3.25 trillion US dollars in 2007, making it the fourth largest economy in the world. At the same time, income inequality has become quite skewed in China, inviting considerable criticism. Moreover, the trend towards greater income inequality persists. Of particular public policy relevance is the effect of income inequality on health disparities in China, particularly for low-income households. This study addresses this issue using a longitudinal dataset from the China Health and Nutrition Survey (CHNS) over the period 1997 to 2006. Our central finding is that income inequality affects health differently by socioeconomic status: income inequality harms individual health among low income households by more than it does among high income households. More specifically, health is more adversely affected by greater income inequality for households with low incomes. China's central government is committed to making further investments in the health care system. As part of that effort, attention should be directed at low income households to reduce health inequality, possibly providing them with a health insurance safety net similar to Medicaid in USA.     

Convergence in per capita health expenditures and health outcomes in the OECD countries

Our analysis of 19 Organization for Economic Co-operation and Development (OECD) countries over the period 1972 to 2006 provides evidence of convergence in per capita health care expenditures for 17 countries, while the US and (to a lesser degree) Norway follow a different path. A simple decomposition of per capita health expenditures reveals that the divergence of the US comes from the divergence of the ‘ratio of health care expenditures to Gross Domestic Product (GDP)’ component, while Norway's divergence is mainly caused by the ‘labour productivity’ component. Interestingly, our results suggest that convergence in per capita health expenditures among the 17 OECD countries does not lead to convergence in health outcomes. Finally, we extend our analysis to examine convergence in various determinants of health expenditures.     

Regional development and non-material public infrastructure

The aim of this paper is to investigate the conditions under which public investment can be allocated to the infrastructure in material and non-material capital so as to have a positive effect on regional development and interregional inequality. To investigate this issue, the paper focuses on the externalities created by investing in infrastructure for the transfer of information, know-how or technical knowledge.     

Trade integration and regional income disparities in a growth model with the service sector and footloose capital

This paper proposes a North–South growth model of endogenous industry location which is consistent with recent empirical work showing that regional income disparities have increased in many countries with the process of trade integration. The model incorporates a service sector that benefits from intersectoral knowledge spillovers from the manufacturing sector. We find that, when these spillovers are local, trade integration leads to an increase in interregional real income inequality.     

Ex Post Welfare under Alternative Health Care Systems

The implications of a societal aversion to inequality for the optimal structure of the health care system are studied. The agents are assumed to be ex ante identical, but to differ ex post in the state of their health. Inequality aversion is introduced by postulating a strictly concave ex post social welfare function. It is shown that the optimal public health care system allocates health care differently than would private health insurance; specifically, people who are relatively unhealthy with and without treatment receive more health care, and people who are relatively healthy with and without treatment receive less health care. The aggregate quantity of health care under the optimal public health care system can be either greater or smaller than under private health care insurance. If the public health care system is optimally designed, allowing agents to purchase supplementary private health care insurance cannot raise social welfare and is likely to decrease it.     

How do income and education affect health inequality: evidence from four developing countries

Using household survey data from four countries ? Albania, Nepal, Tajikistan and Tanzania ? this article calculates income-related inequality in health care utilization. We measure health disparity separately for generally and chronically ill individuals by constructing two models: one for the probability of a visit to a physician and another for the number of visits. Following model-based measurements, we decompose inequality into two major parts: one accounted for by identity-related factors and another by socioeconomic and other factors such as education, geography and distance to a clinic. We propose a new method to quantify the effect of changes in income and education on health disparity. One of our important findings suggests that health disparity is pro-rich in all our sample countries. The pro-rich disparity is prevalent among generally ill as well as chronically ill patients, in both visit probability and visit frequency models. Health inequality seems primarily driven by income differences followed by nonidentity factors. Further, the principle of equal treatment for equal need is not fulfilled in any of our countries. Among policy implications, increasing average income and education in a way that also reduces disparity in income and education, respectively, will substantially shrink inequality in health care utilization.     

Income distributions and decomposable divergence measures

Inequality indices evaluate the divergence between the income distribution and the hypothetical situation where all individuals receive the mean income, and are unambiguously reduced by a Pigou–Dalton progressive transfer. This paper proposes a new approach to evaluate the divergence between any two income distributions, where the latter can be a reference distribution for the former. In the case where the reference distribution is perfectly egalitarian – and uniquely in this case – we assume that any progressive transfer reduces the divergence, and that the divergence can be additively separated into inequality and efficiency loss. We characterize the unique class of decomposable divergence measures consistent with these views. We derive the associated relative and absolute subclasses, and we illustrate the applicability of our results. This approach extends the generalized entropy studied in inequality measurement.     

Trade and Inequality with Limited Labor Mobility: Theory and Evidence from China

Does globalization increase inequality in developing countries, and if so, how? In a theoretical model of a regionally heterogeneous economy, we show how different regional rates of technical progress due to trade and FDI interact with constraints to unskilled labor mobility. As favored regions benefit more from trade, their growing demand for skills drains skilled workers from disadvantaged areas, and average incomes in the former grow faster than in the latter. Moreover, this unbalanced regional growth may also raise inequality within each region. It could even reduce absolute income per capita in the less favored region. We test these predictions with Chinese data from the Open Door era. Results confirm that different regional growth rates have increased both interregional and intraregional inequality. Moreover, growth of skills‐based export industries in coastal regions is associated, other things equal, with lower incomes for the poor in inland provinces.     

Does increased access increase equality? Gender and child health investments in India

Increases in access to social services are often thought to decrease inequality in the level of these services between advantaged and disadvantaged groups. This is an issue in the developing world, where policy-makers often argue that increasing the level of health care, for example, will decrease gender inequality. However, increases in access to services often have empirically ambiguous effects on inequality, increasing it in some cases and decreasing it in others. This paper argues that this is not surprising, and simple economic theory suggests that we should expect a non-monotonic relationship between access and inequality. At low levels of access to investments, there is no investment for either the advantaged or disadvantaged group, producing equality. Increases in access increase investment for the advantaged group first, generating inequality. Further increases in access increase investment in the disadvantaged group, decreasing inequality. I test the predictions of this theory using data on the availability of health camps (or distance to health centers) and gender differences in vaccinations in India. I find strong support for a non-monotonic relationship between access and gender equality.     

Partial decentralization as a way to prevent secessionist conflict

We study secessionist conflict driven by cultural and economic motives in a political union of two regions, and analyze under what conditions partial decentralization may serve as a conflict-mitigating strategy. While the probability of a successful secession is increasing in heterogeneity, it is increasing in interregional income inequality if and only if the union is socially efficient to start with. If the cost of diversity decreases proportionally with decentralization, there always exists a range of decentralization levels compatible with peace. Greater inequality always widens this range but greater heterogeneity widens the range if and only if the union is efficient. The decentralization level implemented to prevent conflict relates to the underlying secession probability. If decentralization is not reversible, peace is not self-enforcing, yet multiple rounds of decentralization can be used to postpone the eventual date of secession.     

Infant mortality,relative income and public policy

Do health outcomes depend on relative income as well as on an individual's absolute level of income? We use infant mortality as a health status indicator and find a significant and positive link between infant mortality and income inequality using cross-national data for 93 countries. Holding constant the income of each of the three poorest quintiles of a country's population, we find that an increase in the income of the upper 20% of the income distribution is associated with higher, not the lower infant mortality. Our results are robust and not just caused by the concave relationship between income and health. The estimates imply a decrease in infant mortality by 1.5% for a one percentage point decrease in the income share of the richest quintile. The overall results are sensitive to public policy: public health care expenditure, educational outcomes, and access to basic sanitation and safe water can explain the inequality–health relationship. Thus, our findings support the hypothesis of public disinvestment in human capital in countries with high income inequality. However, we are not able to determine whether public policy is a confounder or mediator of the relationship between income distribution and health. Relative deprivation caused by the income distance between an individual and the individual's reference group is another possible explanation for a direct effect from income inequality to health.