informality property rights and poverty in china s favelas in this study of households living in informal settlements in three principal chinese cities we analyze the associations between informality property rights and poverty we propose that informality can be understood in terms of property rights presence absence strength completeness and ambiguity drawing on the property rights entitlements theories of sen de soto ostrom alchian and coase we refine a list of property rights effects that can be tested empirically using a household questionnaire survey of 1 208 respondents from a representative sample of 60 urban villages in beijing shanghai and guangzhou we use robust regression models to detect statistical relationships between household performance on six poverty domains as a function of four property rights domains controlling for income human capital and other influences we find evidence for what we call sen effects and de soto effects our models show that some property rights are associated with lower poverty indicators but we also find evidence to show that the absence weakness or ambiguity of property rights also reduce poverty indicators on particular domains through what we assume to be a substitution effect informal settlements permit poorer household to live at lower costs than is usually or officially acceptable and thus spend more on other welfare enhancing expenditures the distribution of property rights determines the size distribution and impacts of these trade offs and shapes the economic and social performance of informal settlements

partial static equilibrium model of newsprint recycling estimation of the demand for old newspapers as an input to us newsprint production reveals that demand is highly price inelastic in both the short and long run this implies that separation and collection programmes which lower prices in secondary markets will not effectively stimulate recycled newsprint production the results also indicate that policies to raise the price of woodpulp will have little impact a slightly more effectivbe recycling policy may be tax preferences aimed at encouraging investment in newsprint capacity the major finding is that growth in output creates an opportunity for greater old newspaper use thus the most effective recycling policy will be one that promotes us newsprint production

informality and poverty in ecuador this paper uses national representative data from the ecuadorian family expenditure survey to study the determinants of poverty and informality in the country taking into account the two way relationship between these two phenomena the main contribution of this paper is to present new empirical evidence on this relationship for a developing country where more than 60 of workers are in the informal sector the results support the view of a heterogeneous informal market in which informal work is both a demand led phenomenon and a voluntary and primarily supply led form of employment

persistence of interindustry wage differentials a reexamination using matched worker firm panel data we estimate interindustry wage differentials using new french longitudinal data that allow a tracking of workers and their firms over time we find that when measured on a cross sectional basis they primarily reflect the interindustry variations in unmeasured labor quality however interindustry wage differentials are only a minor component of interfirm wage differentials the average differential in wages paid to the same workers by different firms is about 20 30 in a given industry wage policies are more favorable to workers in large capital intensive firms

land tenure arrangements and rural urban migration in china summary obstacles to internal migration in china contribute to inefficiency inequality and land degradation academic and policy debate has primarily focused on discrimination against rural migrants on arrival in urban areas meanwhile barriers to migration out of rural areas have received less attention this paper examines the role of incomplete rural property rights in the migration decisions of rural households we examine the relationship between tenure insecurity and restrictions on land rentals and participation in outside labor markets the results indicate that tenure insecurity reduces migration this relationship is particularly pronounced on forest land which has implications for the conservation of recently replanted forest areas

intertemporal labor supply and long term employment contracts the authors compare the implications of a symmetric information contracting model and a dynamic labor supply model for changes in earnings and hours a simple test is whether earnings changes are more variable than hours changes as predicted by the labor supply model or less variable as predicted by the contracting model the authors apply this test to two longitudinal surveys of adult men and find that earnings are somewhat more variable than hours for men who never change employers the estimates suggest that changes in earnings and hours not associated with survey measurement error occur at fixed wage rates copyright 1987 by american economic association

the rising instability of u s earnings the inequality of earnings and of family incomes in the united states has increased since the late 1970s autor katz and kearney 2008 this increase in cross sectional inequality has largely been interpreted as a growing disparity in permanent incomes between those with high incomes and those with low incomes however growing inequality could equally well be a result of growing income instability if workers experience increasingly large fluctuations in earnings from year to year this would also increase the measured inequality of earnings from year to year for example if everyone maintained the same level of permanent income but some experienced a 500 increase in their income in the first year and then a reversal to 500 below their permanent incomes in the following year while an equal number experienced the opposite a drop in income followed by an offsetting rise measured inequality would rise though nothing would have happened to the dispersion of permanent incomes while this example is an extreme one it points to the fact that the large rise in earnings inequality between the 1970s and the 1990s could reflect either a rise in disparity of permanent incomes a rise in earnings instability or some portion of both without longitudinal data it is impossible to distinguish between these two very different explanations for increased cross sectional measures of inequality in this paper we provide longitudinal measures that separate changes in income inequality into changes that permanently change income to new levels and those that only reflect transitory change we refer to the latter as changes in income instability and discuss how the instability of individual earnings and family income in the united states has evolved over the last quarter century

farm productivity and rural poverty in india armed with new data we return to an old question from the pages of this journal to what extent do india s rural poor share in agricultural growth combining data from 24 household sample surveys spanning 35 years with other sources we estimate a model of the joint determination of consumption poverty measures agricultural wages and food prices we find that higher farm productivity brought both absolute and relative gains to poor rural households a large share of the gains was via wages and prices though these effects took time the benefits to the poor were not confined to those near the poverty line

trends in the transitory variance of male earnings methods and evidence we estimate the trend in the transitory variance of male earnings in the united states using the michigan panel study of income dynamics from 1970 to 2004 using an error components model and simpler but only approximate methods we find that the transitory variance started to increase in the early 1970s continued to increase through the mid 1980s and then remained at this new higher level through the 1990s and beyond thus the increase mostly occurred about 30 years ago its increase accounts for between 31 and 49 percent of the total rise in cross sectional variance depending on the time period

urban biased policies and rising income inequality in china since the start of economic reforms in 1978 china has experienced the largest increase in income inequality of all countries for which comparable data are available according to the world bank 1997 china s gini coefficient increased from 28 2 in 1981 to 38 8 in 1995 based on official survey data another study that used internationally standard definitions for incomes estimated china s gini ratio at 38 2 in 1988 and 45 2 in 1995 a level that already surpassed many developing economies in asia azizur khan and carl riskin 1998 are these income inequality changes the consequence of institutional reforms that replaced egalitarian rewards with work incentives employment contracts and labor mobility this paper uses household survey data collected by china s state statistical bureau ssb to investigate the sources and causes of this rising inequality by analyzing gini ratios and generalized entropy measures i decompose the overall inequality into three sectoral components i inequality within rural areas ii inequality within urban areas and iii sectoral disparity the data indicate that increases in rural urban income differentials have been the driving factor behind the rising overall inequality in china i argue that urbanbiased policies and institutions including labor mobility restrictions welfare systems and financial policies of inflation subsidies and investment credits to the urban sector are responsible for the long term rural urban divide and the recent increases in disparity

china s uneven progress against poverty while the incidence of extreme poverty in china fell dramatically over 1980 2001 progress was uneven over time and across provinces rural areas accounted for the bulk of the gains to the poor though migration to urban areas helped the pattern of growth mattered rural economic growth was far more important to national poverty reduction than urban economic growth agriculture played a far more important role than the secondary or tertiary sources of gross domestic product gdp rising inequality within the rural sector greatly slowed poverty reduction provinces starting with relatively high inequality saw slower progress against poverty due both to lower growth and a lower growth elasticity of poverty reduction taxation of farmers and inflation hurt the poor external trade had little short term impact

consumption savings and investment by social class in bangladesh does the rural sector support the urban sector this article employs input output analysis and information from a social accounting matrix and the concept of net savings to examine savings consumption and investment behaviour by various social classes in bangladesh in urban and rural areas considerable differences between social classes can be identified in all three respects a majority of the social classes in the rural sector does not appear to generate enough savings to sustain its consumption whereas the urban social classes do there seems to be little difference in consumption pattern of the rural rich and the urban rich there is considerable urban rural difference in the import intensities of consumption the findings of this study based on the hazari model do not establish the existence of urban bias but the problem seems to be one of rich bias rather than urban bias per se however the hazari model cannot capture all possible sources of urban bias and circumstantial evidence indicates concentration of advantages in the urban areas

are there dynamic gains from a poor area development program poor area development programs in which the government transfers extra resources to unusually poor areas have been widely used to fight poverty there has been some research on such programs but little is known about their impact on household living standards over time the authors address the issue for a sizable poor area development program in rural china china s program had a significant impact on rural living standards in the targeted areas of the sample the consumption growth model suggests that households living in the targeted areas had a higher rate of consumption growth than one would have otherwise expected nonetheless the authors found that while the gains in growth were enough to prevent an absolute decline in average living standards they were not enough to reverse the strong underlying divergent tendencies in the rural economy

complementing empirical evidence on global recycling and trade of waste paper this comment provides a critical analysis of van beukering and bouman s world development 29 2001 1717 article on global paper recycling and trade we first question their notion that developin

changes in earnings instability and job loss this paper examines the contribution of job loss or displacement to increasing male earnings instability between 1970 and 1991 earnings instability increased among both displaced and not displaced men so changes associated with job loss cannot fully explain rising instability changes in the incidence and consequences of job loss did however add substantially to growing earnings instability and to the overall variance of earnings there is evidence that displacement substantially raised earnings volatility for several years after job loss that effect combined with increased numbers of recently displaced workers in the 1980s relative to the previous decade contributed to rising overall earnings instability

third world cities the changing national settlement system this is a review of recent literature on trends in urbanization in developing countries the author examines the decline in the pace of urbanization in the middle east and latin america changes in migration related to changes in spatial structure a trend toward a more polycentric form of metropolitan development around some major urban centers a decline in the pace of metropolitan expansion associated with economic recession and the failure of regional policy to affect urbanization trends annotation

strategic use of recycled content standards under international duopoly abstract we examine the strategic use of recycled content standards rcss under international duopoly rcss require firms supplying the domestic market to use a certain proportion of recycled materials as inputs we demonstrate that when there is no trade in recycled materials two identical countries both set strategically stricter or laxer rcss however when there is trade in recycled materials it may be the case that one country sets a stricter rcs while the other sets a laxer rcs when a world supply constraint on recycled materials is not binding the main source of the asymmetric distortion in rcss is a demand effect for recycled materials

the evolution of income inequality in rural china abstract in this article we analyze trends in income inequality and the distribution of income in rural china from 1987 to 1999 we find an uneven but long run increase in inequality in rural china and show that nearly half of the rural population was not much better off in 1999 than at the start of the period we rule out geography as the most important factor for explaining income differences and the increases that occurred over time much more important were growing differences between households living in the same village province or region we also find that access to nonagricultural incomes from local wage employment and family businesses contributes to inequality but that employment outside the county in which a household lives and accessed through temporary migration is relatively equalizing finally we document important strengths and weaknesses of the primary data set used for our analyses relative to other data sources available for study of inequality and poverty in rural china

trends in the transitory variance of earnings in the united states we decompose the rise in cross sectional variance of male annual earnings in the united states from 1969 to 1996 into permanent and transitory components we find that the variance of permanent earnings began rising in the the late 1970s and has continued to rise in the 1980s the variance of transitory earnings also rose in the 1980s but declined in the 1990s there are lags in the earnings process which require a structural model to pinpoint the exact calendar times at which the changes in trends occurred

efficient contracts with costly adjustment short run employment determination for airline mechanics this paper presents an empirical analysis of firm specific employment and wage outcomes for mechanics in the domestic airlines industry a dynamic contracting model is presented that incorporates both costly employment adjustment and potential gaps between contract wage rates and the opportunity value of workers time the model gives a useful description of the employment output linkage in the data but is less successful in capturing the dynamic relation between employment contract wage rates and wage rates outside the airline industry copyright 1986 by american economic association

quasi fixed inputs in u s and japanese manufacturing a generalized leontief restricted cost function approach in this paper a generalized leontief variable cost function is develope d which permits analytical derivation of steady state levels of quasi fixed inputs and capacity output and does not require specification of a numeraire input this framework is then used to evaluate the fa ctor demand patterns of japanese and u s manufacturing based on bot h one quasi fixed capital input and two quasi fixed capital and la bor input specifications and both static and dynamic optimization t he findings provide evidence of considerable flexibility of demand re sponses in japan which may have contributed to japan s relatively st rong economic performance in the volatile 1970s copyright 1988 by mit press

rural urban disparities in india and china abstract this paper compares rural urban disparities in china and india in light of differences in the following indicators income and consumption deposit to credit ratios and agricultural and industrial productivity access to such public services as health are also considered reasons for disparities are sought in government policies affecting agricultural terms of trade credit and rural to urban migration the paper concludes that the chinese economy during the mao zedong period was much more egalitarian than the indian but the case is less clearcut for the deng xiaoping period

an econometric analysis of global waste paper recovery and utilization the main purpose of this paper is to provide aneconometric analysis of the most importantdeterminants of inter country differences inwaste paper recovery and utilization rates byemploying pooled t

did household consumption become more volatile i show that after accounting for predictable variation arising from movements in real interest rates preferences and income shocks liquidity constraints and measurement errors volatility of household consumption in the us increased by 25 percent between 1970 and 2004 the increase was lower than that of volatility of family income nonwhite and those with less than 13 years of education for whom there was no differential increase in income volatility experienced a significantly larger increase in volatility of household consumption substantial differences in wealth and access to credit markets point to the main reason for this divide jel d12 d14 e21 j15

modelling spatial structures in local housing market dynamics a multilevel perspective there has been a long history of research into the development and estimation of hedonic house price models there is however a discrepancy between the empirical and theoretical approaches to this research a major issue lies in the integration of the conceptual and theoretical models of local housing markets with the context insensitive nature of the standard hedonic model specification this paper explores this inconsistency by using multilevel modelling to move towards a more empirically and conceptually appealing specification of the hedonic house price model it uses price data from cardiff to investigate how a multilevel approach can explicitly incorporate the spatial structures of housing market dynamics and the ad hoc nature of the valuation process the paper concludes that successful empirical analysis depends upon a clear theoretical understanding of the processes under investigation

india and china contrasts in economic liberalization abstract it is argued that in both india and china despite some important differences 1 a similar cultural and political imperatives led to similar systems of dirigisme and economic outcomes with the chinese growth higher than the indian because of higher investment 2 b crises engendered by their dirigiste regimes impelled reform 3 c their attempts to replace the plan by the market have striking similarities but 4 d ultimately because of continuing atavistic attitudes to toward trade and commerce the reforms remain insecure

the impact of migration on rural poverty and inequality a case study in china large numbers of agricultural labor moved from the countryside to cities after the economic reforms in china migration and remittances play an important role in transforming the structure of rural household income this article examines the impact of rural to urban migration on rural poverty and inequality in a mountainous area of hubei province using the data of a 2002 household survey since migration income is a potential substitute for farm income we present counterfactual scenarios of what rural income poverty and inequality would have been in the absence of migration our results show that by providing alternatives to households with lower marginal labor productivity in agriculture migration leads to an increase in rural income in contrast to many studies that suggest that the increasing share of nonfarm income in total income widens inequality this article offers support for the hypothesis that migration tends to have egalitarian effects on rural income for three reasons 1 migration is rational self selection farmers with higher expected return in agricultural activities and or in local nonfarm activities choose to remain in the countryside while those with higher expected return in urban nonfarm sectors migrate 2 households facing binding constraints of land supply are more likely to migrate 3 poorer households benefit disproportionately from migration

turbulent firms turbulent wages abstract has greater turbulence among firms fueled rising wage instability in the u s we find strong support for the hypothesis that rising turbulence in the sales of large publicly traded u s firms over the past three decades has raised their workers high frequency wage volatility through controls and instrumental variable probes we rule out straightforward compositional churning as an explanation for the link between firm sales and wage volatility we also observe that the relationship between sales and wage volatility at the firm level is stronger since 1980 is present only in large companies and is stronger in services than in manufacturing companies

the effect of implicit contracts on the movement of wages over the business cycle evidence from micro data in this paper we address the question of whether wages are affected by labor market conditions in a manner more consistent with a contract approach than with a standard spot market model from a simple implicit contract model we derive implications about the links between wages and past labor market conditions using individual data from the current population survey and the panel study of income dynamics we find that an implicit contract model with costless mobility describes these links better than either a simple spot market model or an implicit contract model with costly mobility

bias corrected estimates of ged returns using three sources of data this article examines the direct economic return to general educational development ged certification for both native and immigrant high school dropouts one data source the current population survey cps is plagued by nonresponse and allocation bias from the hot deck procedure that biases the estimated return to the ged upward correcting for allocation bias and ability bias there is no direct economic return to ged certification an apparent return to ged certification with age found in the raw cps data is due to dropouts becoming more skilled over time these results apply to both native born and immigrant populations

measuring changes in poverty a methodological case study of indonesia during an adjustment period analysis of the effects of policy changes on the poor is often hindered by the difficulties inherent in measuring poverty and comparing levels of poverty before and after policy changes this article outlines two techniques which can overcome many of these measurement problems stochastic dominance conditions which can facilitate a robust poverty ranking of distributions of living standards and a decomposable poverty index which allows measured changes in aggregate poverty to be disaggregated into their various components such as the changes among population subgroups and growth and redistributive components these techniques can be applied to a wide range of indicators of economic well being and poverty lines and to assumptions about the poor the approaches are illustrated using household survey data from indonesia before and after external shocks and the subsequent structural adjustment program in the mid 1980s the study finds that favorable initial conditions and pro poor pattern of growth enabled indonesia to maintain its momentum in poverty alleviation during the period

poverty and famines an essay on entitlement and deprivation this book focuses on the causes of starvation in general and famines in particular the traditional analysis of famines is shown to be fundamentally defective and the author develops an alternative analysis

does aggregation hide the harmful effects of inequality on growth abstract aggregation can severely bias conventional tests of whether inequality impedes growth a micro growth model estimated on farm household data for rural china indicates that asset inequality in the area of residence has a harmful external effect on consumption growth the effect is lost in a regional growth regression

rural reforms and agricultural growth in china this paper employs province level panel data to assess the contributions of decollectivization price adjustments and other reforms to china s agricultural growth in the reform period decollectivization is found to improve total factor productivity and to account for about half of the output growth during 1978 84 the adjustment in state procurement prices also contributed positively to output growth its impact came mainly from the responses in input use the effect of other market related reforms on productivity and output growth was very small reasons for slowdown in agricultural growth after 1984 are also analyzed copyright 1992 by american economic association

testing intertemporal substitution implicit contracts and hours restriction models of the labor market using micro data we present new tests of three theories of the labor market intertemporal substitution hours restrictions and implicit contracts the intertemporal substitution test we implement is an exclusion test robust to many specification errors and we consistently reject this model we model hours restrictions as part of an endogenous switching model we compare the implicit probit equation to an unrestricted probit equation for unemployment and reject the hours restriction model for the implicit contracts model we estimate non separable within period labor supply and consumption equations we test a cross equation restriction of the model and cannot reject the implicit contracts model jel e30 j22 j60

effects of technological change and institutional reform on production growth in chinese agriculture recent rapid agricultural production growth in chinese agriculture could be attributed to an increase in inputs technological change and institutional reform an accounting approach was used to separate the relative contribution of these three factors institutional change like the introduction of the household production responsibility system has contributed to past growth in production however technological change is crucial to furthering production growth because of the limited potential for significant increase in the use of conventional inputs in particular land continued institutional change must accompany corresponding technological changes

implicit contracts a survey 7mplicit contracts resolve the distribution of uncertainty and utilization of specific human capital between risk averse workers and less risk averse firms incomplete contracts are required to yield involuntary layoffs in contract markets otherwise contracts are efficient and pareto optimal by construction there is a close relation between contract theory and neoclassical labor market theory contracts smooth consumption but increase the volatility of labor supply and labor utilization to demand disturbances because contractural insurance eliminates the income effects of socially diversifiable risks this result is similar to the intertemporal substitution hypothesis however the price mechanism in a contract is substantially different contracts embody a nonlinear two part pricing scheme the lump sum part allocates the income consumption consequences of risks and the marginal pricing part allocates production and labor utilization this implicit pricing mechanism is in all respects flexible though the observed average hourly wage combines both parts and may give the outward appearanceof rigidity furthermore the observed average wage rate in a contract does not reflect marginal conditions necessary for structural econometric estimation indivisibilities appear necessary to account for the split between work sharing and layoffs contracts with private information are also considered in the nonlinear pricing context this abstract was borrowed from another version of this item

evolution and human nature from an economic perspective on individual decision making human beings have three key characteristics preferences beliefs and rationality beliefs are the probabilities with which people think various outcomes will occur conditional on information that might be available preferences are the rankings over the set of gambles that are based on such beliefs over the outcomes rationality is the extent to which people succeed in choosing optimal actions in the light of their beliefs and preferences and the extent to which their beliefs are appropriately modified by their information economists typically impose only rather weak assumptions on preferences for example preferences are taken to be transitive and sometimes less explicitly exogenous and unchanging stronger assumptions are typically imposed on preferences in specific contexts however for example preferences over time might be represented by an additively separable function with constant rate of discount despite widespread recognition that this case is a special one further attitudes to risk are often represented by the expected utility theorem which rests on assumptions that are strong if also appealing the assumptions made on rationality in particular are usually very strong that is rationality in economic models usually entails the exact optimization of preferences and modification of beliefs in accordance with bayes theorem the economist s basic picture of preferences beliefs and rationality has been subject to challenges from a growing number of empirical anomalies the proposed explanations of these anomalies involve relaxing the assumptions that economists make on these preferences beliefs or rationality for example preferences

do volatile firms pay volatile earnings evidence from linked worker firm data abstractdespite the importance of earnings instability little is known about its correlates or causes this article seeks to better understand earnings instability by studying whether volatile firms pay volatile earnings and is the first to directly test the relationship using us linked employer employee data the article finds a positive and statistically significant relationship using within firm variation in addition this article finds that lower earning workers are passed significantly more volatility from their employing firms than are higher earning workers

co evolution of gated communities and local public goods gated communities are often seen as steps towards the privatization of the public realm this is too simple a characterization however privately and publicly governed infrastructure and services exist and adapt symbiotically there is little empirical research focusing on the co evolution of private and public neighbourhoods in this paper we focus on a specific question that has not yet been answered does the spatial pattern of privately supplied public goods co evolve with the pattern of publicly supplied public goods we examine this question through a case study of seoul where club residential communities are common enough to test co evolution hypotheses we identify co evolutionary relationships between club goods supplied in condominiums and public goods supplied by municipalities and market we also find evidence of tieboutian intra urban market and show how the substitution of club goods for positive urban externalities seems to weaken the influence of general accessibility on residential loca

can high inequality developing countries escape absolute poverty do the poor face the same prospects for escaping poverty in high inequality developing countries as in low inequality countries is it possible for inequality to be so great as to stifle prospects of reducing absolute poverty even when other initial conditions and policies are favorable to growth household survey data for developing countries suggest that initial distribution does affect how much the poor share in rising average incomes higher initial inequality tends to reduce growth s impact on absolute poverty by the same token higher inequality diminishes the adverse impact on the poor of general economic contraction combining this evidence with that from recent investigations of inequality s effect on growth the author finds that if inequality is high enough countries that would have very good growth prospects at low levels of inequality may see little or no overall growth and little progress in reducing poverty or even a worsening on both counts the data the author uses suggest that such cases do occur the precision with which key parameters have been estimated makes it difficult to say with confidence how common such cases are but they appear to be in the minority what appear to be the best available estimates suggest that about one fifth of the spells between surveys he analyzed were cases in which poverty was rising yet positive growth in the mean and hence falling poverty is predicted at zero inequality inequality can be high enough to result in rising poverty despite good underlying growth prospects