收入增长与不平等对我国贫困的影响

本文运用两组家计调查数据,采用夏普里(Shaley)分解法实证分析了20世纪90年代收入增长和收入分配的变化在我国贫困变动中的作用,并特别考虑了不同贫困线、贫困指标及等价规模对实证结果的影响。分析结果表明,90年代前半期农村减贫的成功主要归因于收入的增长和不平等的下降。在90年代后半期,农村和城市都经历了不平等的快速上升和收入的缓慢增长。因此,这段时间减贫的速度下降,甚至贫困有所增加。     

HAS MACROECONOMIC PERFORMANCE REGAINED ITS ANTIPOVERTY BITE?

From the mid-1980s to the early 1990s, several important studies examined the statistical relationship between the U.S. official poverty rate and overall economic performance. Most of these studies focused on the apparent break in this relationship beginning in the late 1970s or early 1980s. In this article, we present the results of our study of the relationship between macroeconomic performance and the poverty rate, using annual time-series data on macroeconomic variables, such as the unemployment rate and per-capita GDP growth from 1959 through 1998. Like these earlier studies, we also find that economic performance had a smaller antipoverty effect during the 1970s and 1980s than it did in earlier years. However, our estimates suggest that the weakened economic growth-poverty relationship may have been an aberration of this period and that the expected relationship of the 1960s has again been reestablished in the 1990s. This is true even after accounting for changes in earnings inequality over the entire period.     

The impact of growth and inequality on rural poverty in China

This paper analyzes the evolution of poverty in China from the late 1980s to the late 1990s, employing a version of Shapley decomposition tailored to unit-record household survey data. The changes in poverty trends are attributed to two proximate causes—income growth and shifts in income distribution. Different data sets, poverty lines, poverty measures, and equivalence scales are used to examine the robustness of the results. Potential biases arising from ignoring differential regional prices and inflation are also investigated. Notwithstanding some ambiguities in the results, it is consistently found that rural poverty increased in the second half of the 1990s and adverse distributional changes are the main cause. Journal of Comparative Economics 34 (4) (2006) 694–712.     

Economic growth and poverty: a tale of two decades

The relationship between poverty and economic growth is reexamined using pooled cross section and time series estimates of state level poverty. Empirical evidence is provided for both cash and comprehensive income headcounts and Sen indexes of poverty. Particular emphasis is placed on the differential impacts of growth on poverty in the long economic expansions of the 1980s and 1990s. Contrary to prior work, we find that the long-term effects of growth did not strengthen and may have actually diminished during the 1990s.     

The effect of robust growth on poverty: a nonlinear analysis

Previous research has shown that economic growth should help to reduce the rate of poverty. However, a number of recent studies have found that the economic expansion of the 1980s had no statistically significant effect on aggregate poverty. It is shown that both a Threshold regression and a Fourier approximation provide a better empirical model of poverty than the standard linear model. It is noteworthy that the nonlinear specifications show a large and significant effect on poverty of the 1980s expansion.     

GROWTH, INEQUALITY, AND POVERTY: A CAUTIONARY NOTE

Economic growth had less impact on poverty rates in the 1980s than in the 1960s. Could this be explained by Locke Anderson's observation that the higher median income, the greater the amount of growth needed to achieve a percentage point fall in the poverty rate? No, higher poverty rates are due instead to the rise in income inequality. With higher inequality, however, trickle down could be as effective in the 1990s as it was in the late 1960s. More generally, assessments of anti-poverty policy must recognize that inequality is as vital to changes in the poverty rate as growth in mean income.     

When is growth pro-poor? Evidence from a panel of countries

Growth is pro-poor if the poverty measure of interest falls. According to this definition there are three potential sources of pro-poor growth: (a) a high growth rate of average incomes; (b) a high sensitivity of poverty to growth in average incomes; and (c) a poverty-reducing pattern of growth in relative incomes. I empirically decompose changes in poverty in a sample of developing countries during the 1980s and 1990s into these three components. In the medium- to long-run, most of the variation in changes in poverty can be attributed to growth in average incomes, suggesting that policies and institutions that promote broad-based growth should be central to the pro-poor growth agenda. Most of the remainder of the variation in changes in poverty is due to poverty-reducing patterns of growth in relative incomes, rather than differences in the sensitivity of poverty to growth in average incomes. Cross-country evidence provides relatively little guidance as to the policies and institutions that promote these other sources of pro-poor growth.     

THE DISTRIBUTIONAL CONSEQUENCES DURING THE EARLY STAGES OF RUSSIA'S TRANSITION

We consider the distributional consequences at a national level in Russia during the initial phase of market reforms between the mid-1980s and the early 1990s. Although the incomes of many individuals changed favourably under the reforms during this period, average real household per capita income declined between 1985 and 1992. In particular during the first year of major reform in 1992 households at the lower end of the income distribution seemed to incur the largest fall in income. As a consequence there was a rise in measured income inequality. The Gini coefficient, estimated by various researchers to have been around 27 percent between the late 1960s and early 1990s. we estimate to have increased to 32.2 percent by the end of 1992. We also estimate that poverty increased with 18.5 percent of the population on incomes lying below the official subsistence level at the end of 1992.     

POVERTY, NON-WHITE POVERTY, AND THE SEN INDEX

This paper investigates the impact of economic growth, and more specifically robust economic growth along with other macroeconomic determinants, on poverty levels using both the U.S. official measure of poverty and an estimated time series of Sen indices of poverty. The results reveal that the period of robust economic expansion that the U.S. economy experienced during the 1990s did not have a significant impact on poverty using either measure. In addition, we find that the impact of growth and other macro controls is dramatically different when a subset of the poverty population, namely non-white poverty, is investigated. The percentage of households headed by women is shown to be a significant factor in examining poverty for this subgroup.     

All About the Giants: Probing the Influences on World Growth and Income Inequality at the End of the 20th Century

This paper presents estimates of world output growth from 1970to 2000, the distribution of income among countries and personsfor the years 1980, 1990 and 2000, and world income povertyrates for the same years. It also presents the results of aseries of simulation exercises that attempt to isolate the effectof particular country and regional experiences on world outputgrowth and changes in global income inequality and poverty. The authors find that rapid growth in China (despite a downwardadjustment of official growth estimates) had a powerful impacton the growth of world output in both the 1980s and 1990s, butthat negative economic growth in Eastern Europe more than offsetthat effect in the 1990s. With respect to the distribution ofworld income between countries, the impressive growth performancesof the worlds most populous countries, China and India, ensureddecreasing levels of inequality during both the 1980s and 1990s.When the distribution of world income between persons is measured,the equalizing effect of China's rapid growth remains dominantthrough both the 1980s and 1990s, despite the contradictoryimpact of increasing domestic inequality. Only India's influenceremained substantial by comparison. Other identifiable eventsof the period, such as the economic contraction in Eastern Europeand continued economic decline in Africa, had little statisticalimpact. However, when the combined influence of China and India'sabove-average growth rates is removed, or their size effectdampened, the improving global distribution of (inter-countryand inter-personal) income suggested by all statistical measuresbecomes one of sharply worsening inequality. The impact of thesetwo countries is similarly critical with respect to global povertyreduction. (JEL F0, I3, O4)     

Was the Burden of the Deep Swedish Recession Equally Shared?

The development of income inequality in Sweden up to 1998 is described and analyzed using yearly data focusing on the 1990s when average income fell rapidly and unemployment sky rocketed. Inequality in equivalent disposable income increased during the 1990s as during most of the 1980s. Decomposing total inequality by population groups and studying the earnings of full–time workers shows that while many groups experienced drops in income during the 1990s, some large groups did not. Examples of the latter are pensioners and full–time workers. Young adults and recent immigrants are examples of the former. Decomposing the Gini–coefficient by income source indicates that forces leading to increased inequality during the 1990s differed from those at play during the 1980s.     

Financial development and poverty in developing countries: a causal analysis

This article empirically examines the possible causal links between financial development and poverty in developing countries. To this end, we apply a modified form of traditional Granger causality tests to suit the short times series that are available. We conclude that the evidence supports the hypothesis that in the period of the 1970s–1980s financial development, measured by liquid assets of the financial system as a share of GDP or by money and quasi money as a percentage of GDP, leads to the reduction of moderate poverty. These results do not appear for the period of the 1980s–1990s or when financial development is measured by the ratio of the value of credits granted by financial intermediaries to the private sector to GDP, whereas they seem to be strengthened by using summary measures of financial development. Likewise, our analysis does not show any evidence of Granger causality from poverty to financial development.     

A note on Canadian migration to the United States during the 1980s and 1990s

Considerable media attention had been directed towards the flow of highly talented Canadians to the United States in the 1990s. There are firm theoretical reasons, however, to believe that qualitative differences in migration began as early as the 1980s, owing to the widening distribution of earnings and the related increased returns to education in the United States relative to Canada, both of which could result in qualitative improvements in the migration flow. US immigration policy remained essentially unchanged during the 1980s, but changed markedly in the 1990s owing to the implementation of the Canada–US Free Trade Agreement (CUFTA) and its successor, the North American Free Trade Agreement (NAFTA). We use a flexible empirical approach to document these changes in immigrant quality using 1980, 1990 and 2000 US census data. Our results suggest that improvements in Canadian immigrant quality occurred during the 1990s, but these also happened earlier, casting doubt on the hypothesis of improving Canadian immigrant quality in the 1990s. Quantile regressions also show that improvement in the entry quality of immigrants was not limited to the upper tail of the earnings distribution.     

SECTORAL EXCHANGE RATE PASS-THROUGH: TESTING THE IMPACT OF POLICY REFORMS IN INDIA

This paper analyses the impact of India's policy reforms on exchange rate pass‐through into import and export prices, using panel data (at one‐digit SITC level) for pre‐ (1980–90) and post‐reform (1991–2001) periods. While the pass‐through into import prices has declined, the pass‐through into export prices (in USD terms) has increased during the 1990s. The results suggest that, relative to rupee depreciation, Indian exporters increased their USD prices around 20% in the 1980s, but decreased them by around 70% in the 1990s. Moreover, the number of sectors exhibiting some degree of pass‐through increased in the 1990s (six), relative to the 1980s (three). These changes may be attributable to the elimination of currency and trade controls, which increased competition among firms and fostered a concern with market share gains in the 1990s over an attempt to use depreciations to increase profits in the 1980s.     

Not by growth alone: The role of the distribution of income in regional diversity in poverty reduction

This study examines the role of the distribution of income in determining the responsiveness of poverty to income growth and changes in income inequality using panel data of 58 developing countries for the period 1980-1998. We show that the large cross-regional variation in the capacity of income growth to reduce poverty, i.e. the income elasticity, is largely explained by differences in the initial distribution of income and present region and time specific estimates of the income and Gini elasticities of poverty. We find that the income elasticity of poverty in the mid-1990s equals −1.31 on average and ranges from −0.71 for Sub-Saharan Africa to −2.27 for the Middle East and North Africa, and that the Gini elasticity of poverty equals 0.80 on average and ranges from 0.01 in South Asia to 1.73 in Latin America. Furthermore we show that while differing income growth rates account for most of the regional diversity in poverty trends, the additional impact of differences across regions in rates of inequality change and income and inequality elasticities of poverty is almost always significant and far too large to be ignored, most notably so in Eastern Europe and Central Asia.     

Economic Reforms and Human Development Indicators in India*

This paper sketches the contours of progress in India across a broad range of human development indicators, especially those related to the Millennium Development Goals. This paper also considers the slackening of the drop in poverty reduction since the 1990s (as compared to the 1980s) and the theme of increasing personal and regional inequality in India in the post‐reforms period. It also considers the even more persistent incidence of hunger in India and concludes by assessing the potential role of public policy in addressing the twin problems of slowdown in poverty alleviation and reduction of hunger.     

IS POVERTY INCREASING IN THE DEVELOPING WORLD?

We assess the developing world's progress in reducing poverty during the late 1980s using new data on the distribution of household consumption or income per person for 44 countries. Local currencies are adjusted to purchasing power parity. To assess robustness, restricted dominance tests are applied to the poverty comparisons. An overall decrease in poverty incidence is indicated over a wide range of poverty lines and measures. However the change is small, and numbers of poor increased at roughly the rate of population growth. The experience was diverse across regions and countries; poverty fell in South and East Asia, while it rose in Latin America and Sub-Saharan Africa.     

中国城市老年人贫困程度的探讨

根据国际流行的贫困距指数研究方法，在中国老龄科研中心1992年调查和2000年调查数据的基拙上，以城市老年人家庭作为计量单位，从支出口径探讨了中国部分省、直辖市的城市老年人90年代贫困的状况和发展趋势。对比了两次调查相同省份城市低收入老年人群体的收入变化情况。这一特定群体的老年人在90年代收入增长缓慢，有可能陷入以收入口径侧量的深度贫困。对如何改善城市贫困老年人的救助提出了对策建议。     

Financial development and poverty: evidence from the CFA Franc Zone

The financial liberalization in the 1980s and early 1990s led the CFA Franc Zone countries to deepen reforms in their financial systems. These reforms fostered financial development, which in turn may have reduced income poverty, as emphasized by several theoretical arguments in the literature. This study aims at estimating the contribution of financial development to poverty alleviation in the CFA Franc Zone. Results based on a panel of CFA Franc Zone countries show that financial development is associated with a drop in the proportion of poor population. Next, financial development reduces the extent to which the income of individuals falls below the poverty line. Moreover, in some cases, the effect of financial development on poverty may be subject to nonlinearities. Finally, financial instability or unstable financial development leading to crises may mitigate the favourable effect of financial development on poverty reduction. These findings are robust to the use of alternative measures of financial development and hold after controlling for a potential simultaneity and a small sample biases.