schooling inequality and language barriers abstract this article estimates the impact of language barriers on school achievement and the potential ameliorating role of bilingual education using large household data sets from poor rural communities in mexico we find that parental language failure to speak spanish represents an important barrier to the schooling of indigenous children we provide an empirical test suggesting that this largely reflects parental human capital related to culture language rather than unobserved wealth effects using double difference estimators with community fixed effects to address endogenous program placement we demonstrate that schools with bilingual education narrow the gap in the educational performance of children with monolingual mothers versus bilingual and nonindigenous mothers

dynamic savings decisions in agricultural environments with incomplete markets we develop a methodology for examining savings behavior in rural areas of developing countries that explicitly incorporates the sequential decision process in agriculture the approach is used to examine the relative importance of alternative forms of savings in the presence and absence of formal financial intermediaries our results based on stage specific panel data from pakistan provide evidence that the presence of financial intermediaries importantly influences the use of formal savings and transfers for income smoothing we also find that there are significant biases in evaluations of the savings income relationship that are inattentive to the within year dynamics of agricultural production

education and contraceptive choice a conditional demand framework a multiperiod model of fertility and contraceptive choice which considers unobserved differential preferences for the timing of births is formulated conventional and conditional demand equations for contraceptives are derived from the model and the relationships in each between female education birth intentions and the level of contraceptive efficiency are compared demand equations derived from the model conditioned on birth intentions were shown to be superior to conventional demand equations in testing some of the assumptions pertaining to the technology of contraceptives embedded in the utility maximization framework a weak test of the hypothesis that education lowers the fixed costs of information associated with new technologies as exemplified by the oral contraceptive was shown to be obtainable only from consistent estimates of conditional contraceptive choice demand parameters as a consequence of the dual technological attributes of contraceptive methods if education affects both the costs of children and preference orderings over the spacing of births the education contraceptive use association conditional on the number of intended children cannot be used to make welfare comparisons across households the log linear model in which contraceptives were categorized on the basis of their cost characteristics and simulatenous equations techniques were used to obtain estimates of the conditional demand equations for contraceptives based on data from the national fertility survey 1970 estimates indicated that the education of the wife among households with identical fertility plans was significantly and positively associated with the adoption of the newer birth control methods in 1970 with quantitiative affects significantly greater than those indicated in reduced form and inconsistently estimated conditional equations appearing in a priori studies the results support the hypothesis that the relative magnitudes of fixed and variable contraceptive costs influence contraceptive decisions with the value of the wifes time an important component of the former and suggest that women with higher levels of education are more likely to use traditional contraceptive methods

economic and policy implications of restricted patch distribution in this paper we study how restricting the availability of patches to legal users impacts the vendor s profits market share software maintenance decisions and welfare outcomes prior work on this topic assumes that the hacker s effort is independent of the vendor s decision to release the patch freely or not clearly if the patch is not available to everyone the hacker finds it easier to exploit the vulnerability in the product and as a result is likely to alter his effort to understand the role of a strategic hacker we build a game theoretic model where the hacker s decision is endogenous with this model we find that the hacker s effort may on the one hand decrease the utility that the vendor can extract from the consumers but on the other hand may help differentiate the legal version of the product from the pirated version a vendor can strategically exploit the hacker s behavior in its pricing and software maintenance decisions the endogeneity of the hacker s actions drives several of

nutrition and labor producvivity in agriculture estimates for rural south india using panel data for rural south india a fixed effects individual wage equation and farm production function are estimated that have calorie intake and nutritional status weight for height of workers as their arguments neither market wages nor farm output are observed to be responsive to changes in the daily energy intake of workers however both are highly elastic with respect to weight for height these results suggest that while the human body can adapt to inadequate nutrition in the short run it cannot adapt as readily to chronic malnutrition that eventually results in loss of weight for height copyright 1988 by mit press

infant health and the labor supply of mothers this study examines the association between maternal employment and infant feeding and the health of children and the role of prices wages and other exogenous factors in influencing the association in the philippines data were obtained from the 1983 86 cebu longitudinal health and nutrition survey of 2868 women who were permanent residents of the sample areas and had given birth to a single live child in metro cebu during 1983 84 analysis is based on the conceptual framework in which infant feeding and labor supply are jointly chosen to maximize the utility subject to time budget and health production function constraints findings indicate that the labor supply of the mother had little direct effect on infant health when prices wages and other exogenous factors are taken into account maternal wage rates and prices of key foods affected labor supply and infant feeding and care women with better wage offers were more likely to work and to have healthier infants maternal labor supply only had statistically significant effects on infant health when occupation was accounted for it is suggested that women in developing countries should not be discouraged from working womens earnings increase their ability to pay for food and breast milk substitutes that contribute to healthy infants the authors suggest that other health outcomes such as infant morbidity and mortality could be examined or substitutions for other feeding patterns and child care options

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

health enterprise and labor complementarity in the household we study the role of household enterprise as a coping mechanism after health shocks using variation in the cost of traveling to formal sector health facilities to predict recovery from acute illness in tanzania we show that individuals with prolonged illness switch from farm labor to enterprise activity this response occurs along both the extensive entry and intensive capital stock and labor supply margins family members who are not ill exhibit exactly the same pattern of responses deriving a simple extension to the canonical agricultural household model we show that our results suggest complementarities in household labor

industrial centralization in indonesia in certain situations economic liberalization policies can increase the degree of spatial centralization of resources and spatial concentration of manufacturing in large metropolitan areas in addition historical patterns of location make it difficult to alter the degree of centralization this article explores these issues by specifying and estimating a nested logit model of industrial location of manufacturing activity in java focusing on the unincorporated sector the results indicate that plants strongly prefer locations with mature plants in related industries which offer a built up stock of local knowledge in addition the 1983 liberalization in indonesia was associated with increased centralization of the unincorporated sector although the liberalization gave unincorporated firms better access to government and other centralized services firms needed to centralize to take advantage of these opportunities because the bureaucratic process is centralized and communications are poor the relative increased growth of the corporate sector following liberalization may also have helped to further draw unincorporated plants into centralized locations

parental behavior and the value of children s health a health production approach data on individual children and on sibling pairs are used to examine how family resource allocations affect children s health and to estimate willingness to pay for reduced acute illness in children results highlight the importance of accounting for the endogeneity of child health and suggest that children with greater stocks of health capital whose parents invest in preventive and remedial medical care experience fewer days of illness estimated willingness to pay to avoid one day of illness induced school loss is about 100 to 150 a range broadly consistent with limited prior evidence but sub stantially more than unit values applied in recent policy analyses all else equal willingness to pay is higher among single parents and for uninsured children and the estimated income elasticity is only 0 14 implied aggregate benefits of reductions in children s sick time associated with air pollution control may be substantial

does drinking really decrease in bad times this paper investigates the relationship between macroeconomic conditions and drinking using individual level data from 1987 to 1999 interview years of the behavioral risk factor surveillance system brfss we confirm the procyclical variation in overall drinking identified in previous research using aggregate sales data and show that this largely results from changes in consumption by existing drinkers rather than movements into or out of drinking moreover the decrease occurring during bad economic times is concentrated among heavy consumers with light drinking actually rising we also find no evidence that the decline in overall alcohol use masks a rise for persons becoming unemployed during contractions these results suggest that any stress induced increases in drinking during bad economic times are more than offset by declines resulting from changes in economic factors such as lower incomes

wage and labor supply effects of illness in cote d ivoire and ghana instrumental variable estimates for days disabled abstract sickness should make individuals less productive but there are problems in measuring this effect first how is adult morbidity measured in a household survey second how is the impact or morbidity on productivity inferred if earning is partly used to improve health self reported functional activity limitation due to illness is considered an indicator of morbidity for wage earners and self employed people to deal with both the measurement and joint determination problems an instrumental variable estimation approach is used where local food prices and health services instrument for disability days that reduce wages by at least 10 and hours by 3 or more

arsenic mitigation in bangladesh a household labor market approach rural families in bangladesh one of the poorest countries in the world face financial risks from major illness both from the cost of medical care and from the loss of income associated with reduced labor supply and productivity chronic exposure to arsenic in drinking water has often been associated with the development of skin cancers and internal cancers especially of the bladder liver and lungs and a wide variety of other health conditions such as diabetes respiratory problems cardiovascular diseases hyperpigmentation hypopigmentation and keratosis a condition in which painful nodules grow on the palms of the hands and soles of the feet most of the economic work on arsenic contamination in bangladesh has had an epidemiological focus that has tried to effectively monetize a dose response relation using either a cost of illness or a willingness to pay approach

the impact of agricultural extension and roads on poverty and consumption growth in fifteen ethiopian villages this article investigates whether public investments that led to improvements in road quality and increased access to agricultural extension services led to faster consumption growth and lower rates of poverty in rural ethiopia estimating an instrumental variables model using generalized methods of moments and controlling for household fixed effects we find evidence of positive impacts with meaningful magnitudes receiving at least one extension visit reduces headcount poverty by 9 8 percentage points and increases consumption growth by 7 1 percentage points access to all weather roads reduces poverty by 6 9 percentage points and increases consumption growth by 16 3 percentage points these results are robust to changes in model specification and estimation methods

who should be responsible for software security a comparative analysis of liability policies in network environments in recent years vendor liability for software security vulnerabilities has been the center of an important debate in the software community and a topic gaining government attention in legislative committees and hearings the importance of this question surrounding vendor security liability is amplified when one considers the increasing emergence of zero day attacks where hackers take advantage of vulnerabilities before the software vendor has a chance to release protective patches in this paper we compare the effectiveness of three software liability policies vendor liability for damages vendor liability for patching costs and government imposed security standards we find that vendor liability for losses is not effective in improving social welfare in the short run while liability for patching costs can be effective if either patching costs are large and the likelihood of a zero day attack is low or patching costs are small and zero day likelihood is high in the long run when the vendor can invest in reducing the likelihood of security vulnerabilities loss liability is still ineffective when the zero day attack probability is high but can increase both vendor investment in security and social welfare when zero day attack likelihood is sufficiently low when the zero day attack probability is high patch liability is ineffective if user patching costs are large but partial patch liability can boost vendor investment and improve welfare when patching costs are small in contrast in an environment with low zero day attack probability full vendor patch liability can be optimal finally comparing the effectiveness of the three liability policies under study we find that government imposed standards on software security investment can be preferable to both patching and loss liability on the vendor if zero day attack likelihood is sufficiently low however if zero day attacks are a common occurrence and patching costs are not too high partial patch liability is the most effective policy this paper was accepted by sandra slaughter information systems

does job loss shorten life this paper examines the impact of job loss on overall and cause specific mortality using linked employer employee data we identified the workers displaced due to all establishment closures in sweden in 1987 and 1988 hence we have extended the case study approach which has dominated the plant closure literature the overall mortality risk among men increased by 44 percent during the first four years following job loss while there was no impact on either female overall mortality or in the longer run for both sexes however there was an about twofold short run increase in suicides and alcohol related mortality

internal funds and corporate investment in india abstract several economists have argued that capital markets in less developed countries are fragmented fragmented capital markets retard the efficient allocation of resources and force business firms to rely on internal sources of funds using firm level data the authors examine the importance of the accelerator internal funds and depreciation for investment by manufacturing firms in india the results indicate that internal funds and depreciation have significant explanatory power in a sales accelerator model of investment and that there exists heterogeneity among firms in the link between internal funds and investment in particular internal funds are relatively more important for large firms and firms that produce luxury goods

is there an intrahousehold flypaper effect evidence from a school feeding programme are public transfers targeted toward children neutralised by the household as the theory of altruism implies or is there an intrahousehold flypaper effect whereby such transfers stick to the child this paper studies the impact of a school feeding programme on child caloric intake in the philippines using a quasi experimental methodology the empirical results confirm an intrahousehold flypaper effect indeed they indicate virtually no intrahousehold reallocation of calories in response to the feeding programme in poorer households however children s gains from the programme appear to be taxed more heavily

the effects of rural electrification on employment new evidence from south africa this paper estimates the impact of electrification on employment growth by analyzing south africa s mass roll out of electricity to rural households using several new data sources and two different identification strategies an instrumental variables strategy and a fixed effects approach i find that electrification significantly raises female employment within five years this new infrastructure appears to increase hours of work for men and women while reducing female wages and increasing male earnings several pieces of evidence suggest that household electrification raises employment by releasing women from home production and enabling microenterprises migration behavior may also be affected jel h54 l94

recessions healthy no more abstract over the 1976 2010 period total mortality shifted from strongly procyclical to being weakly or unrelated to macroeconomic conditions the association is likely to be poorly measured when using short less than 15 year analysis periods deaths from cardiovascular disease and transport accidents continue to be procyclical however countercyclical patterns have emerged for fatalities from cancer mortality and external causes among the latter non transport accidents particularly accidental poisonings play an important role

fertility and child mortality in cote d ivoire and ghana this article examines individual household and community characteristics that may affect fertility in contemporary cote d lvoire and ghana and the relationship between child mortality and fertility it was not possible to reject the null hypothesis that child mortality is exogenous treating child mortality as exogenous fertility responds directly to child mortality but by a smaller proportion than estimated in studies of east asia and latin america increases in female education and urbanization are likely to contribute to declines in fertility in both countries but economic growth without these structural changes is not yet strongly related to lower fertility

the indian public distribution system as provider of food security evidence from child nutrition in andhra pradesh abstract we study whether a sudden increase of the price of rice supplied by the indian public distribution system in andhra pradesh a large indian state had a negative impact on child nutrition a few months after the price increase a health survey started to record weight for a large sample of children the data collection continued for several months so that children measured later lived for a longer period of time in a less favorable price regime using different estimation techniques we find that longer exposure to high prices are not accompanied by worse nutritional status as measured by weight for age

welfare marital prospects and nonmarital childbearing the roles of the entitlements of the afdc program and marital prospects in the fertility and marriage choices of young women are assessed in the context of a model incorporating heritable endowment heterogeneity assortative mating concern for child quality and potential parental and public support alternatives estimates based on data describing the fertility and marital experience up to age 23 of the eight birth cohorts of women in the nlsy provide evidence that higher afdc benefit levels and lower marital prospects induce young women to choose to have a child outside of marriage

prices infrastructure household characteristics and child height household survey data from brazil matched with information collected at the municipio county level are used to examine the relation between parental characteristics primarily education community infrastructure and services and child height data are drawn from 2 sources informacoes basicas municipais 1974 is a periodic survey of 4000 municipios on infrastructure health and education services estudo nacional da despesa familiar 1974 75 is a household survey covering 37000 children under age 8 on income expenditure anthropometry and socio demographic characteristics local food price indices were derived from these data child height is significantly affected by local infrastructure particularly modern sewerage and piped water in urban areas and electricity in rural settings these effects are stronger for children over 2 those of better educated mothers and those in households spending more higher prices for dairy products and sugar are linked to lower urban child height and higher fish prices to lower rural child height significantly for children of illiterate mothers higher prices for meat and rice are associated with taller height possible because men usually eat these foods mothers with elementary schooling can counteract the effects of food prices on child height number of teachers is positively related to height in rural children numbers of nurses and of hospital beds is associated with shorter children suggesting that large hospitals locate in poor urban areas this study has succeeded in identifying some public investments that affect child health

optimal timing of sequential distribution the impact of congestion externalities and day and date strategies the window between a film s theatrical and video releases has been steadily declining with some studios now testing day and date strategies i e when a film is released across multiple channels at once we present a model of consumer choice that examines trade offs between substitutable products theatrical and video forms the possibility of purchasing both alternatives a congestion externality affecting consumption at theaters with heterogeneous consumer groups and a decay in the quality of the content over time our model permits a normative study of the impact of shorter release windows zero three months for which there is a scarcity of relevant data we characterize the market conditions under which a studio makes video release time and price selections indicative of direct to video day and date and delayed video release tactics during seasons of peak congestion we establish that day and date strategies are optimal for high quality films with high content durability i e films whose content tends to lead consumers to purchase both alternatives whereas prices are set to perfectly segment the consumer market for films with low content durability we find that lower congestion effects provide studios with incentives to delay release and price the video to induce multiple purchasing behavior for films with higher content durability however an increase in congestion effects can in certain cases actually lead to higher studio profitability we also show that at the lower range of quality an increase in movie quality should often be accompanied by a later video release time surprisingly however we observe the opposite result at the upper range of movie quality an increase in quality can justify an earlier release of the video

program interventions intrahousehold distribution and the welfare of individuals modelling household behavior abstract in this essay the implications for the intrahousehold distribution of resources derived from economic models of household behavior that treat the household as maximizing a single welfare function are reviewed particular attention is paid to the within family allocation of time and food and to the effects of these resources on the schooling earnings and health status of individuals as they are affected by direct food intervention and female employment schemes and price altering policies empirical applications are provided from data sets from india indonesia and the philippines to illustrate the power and limitations of such models for illuminating household interventions and for placing restrictions on data

a note on economic conditions and alcohol problems this paper reexamines the effect of the business cycle on alcohol consumption using u s state level analysis introduced by rhum ruhm c j 1995 economic conditions and alcohol problems journal of health economics 14 583 603 using an extended panel this analysis finds that ruhm s estimates are biased and inconsistent due to the problem of non stationarity in alcohol consumption and state economic condition time series corrected estimation using logarithmic first differences confirms ruhm s original finding of pro cyclical alcohol consumption but these results unlike ruhm s are robust to sample period

three new empirical tests of the pollution haven hypothesis when environmental regulation is endogenous the validity of existing empirical tests of the pollution haven hypothesis phh is constantly under scrutiny due to two shortcomings first the issues of unobserved heterogeneity and measurement error in environmental regulation are typically ignored due to the lack of a credible traditional instrumental variable second while the recent literature has emphasized the importance of geographic spillovers in determining the location choice of foreign investment such spatial effects have yet to be adequately incorporated into empirical tests of the phh as a result the impact of environmental regulations on trade patterns and the location decisions of multinational enterprises remains unclear in this paper we circumvent the lack of a traditional instrument within a model incorporating geographic spillovers utilizing three novel identification strategies using state level panel data on inbound u s fdi relative abatement costs and other determinants of fdi we consistently find i evidence of environmental regulation being endogenous ii a negative impact of own environmental regulation on inbound fdi in pollution intensive sectors particularly when measured by employment and iii larger effects of environmental regulation once endogeneity is addressed neighboring environmental regulation is not found to be an important determinant of fdi

tax subsidy policies toward vector borne infectious diseases abstract vector borne diseases especially rife in poor countries pose sectoral tax subsidy issues preventions and therapies mitigate these diseases in a numerical optimization model combining dynamic epidemiology and economics the medical distinction between prevention and therapy does not distinguish economic properties of preventions and therapies some interventions increase and others decrease moving to the steady state depending on the utility function the targeting of interventions and the disease process interventions display negative own price but indeterminate cross price effects juxtaposing the social planner s with decentralized choices quantifies externalities and shows how subsidies implement the first best one prevention and the therapy are equally subsidized

the impact of protective measures for female workers policies designed to protect female workers have controversial effects on labor market outcomes both in theory and in practice the analysis uses repeated cross sections of household survey data for taiwan to estimate the impact of working hours restrictions and maternity benefits differential coverage across industrial sectors and demographic groups provides a unique opportunity to identify the impact of both policies in a single natural experiment framework while working hours restrictions have a negative impact on women s actual hours worked and employment maternity benefits increase these labor inputs implying that women value the opportunity to return to jobs they might otherwise have to leave

robots and jobs evidence from us labor markets we study the effects of industrial robots on us labor markets we show theoretically that robots may reduce employment and wages and that their local impacts can be estimated using variation in exp

early childhood nutrition schooling and sibling inequality in a dynamic context evidence from south africa abstract this article examines the effects of early childhood nutrition on schooling investments and outcomes to assess the dynamic nature of human capital production using panel data from south africa height for age z score is used as a measure of health and nutritional status in early childhood based on a comparison of siblings the empirical analysis shows that improving children s health significantly lowers the age when they start school increases grade attainment decreases grade repetition and improves learning performance in the early stage of schooling however the observed effect diminishes as a child ages which implies that i height at ages earlier than three better explains subsequent schooling outcomes and or ii the role of health capital changes from one schooling stage to another

migration self selection and earnings in philippine rural communities abstract estimated returns to schooling investments can be misleading if migration causes significant shifts in population distribution across time data gathered in rural philippine communities show that the more educated and experienced individuals are more likely to outmigrate causing a sample selection bias in the estimation of wage equations the observed wages were then lower than the conditional population mean of an entire cohort residing originally in the area controlling for self selection the wage returns to schooling and experience were higher finally the sample selectivity variable accounts substantially for the difference in the wages of men and women

network software security and user incentives we study the effect of user incentives on software security in a network of individual users under costly patching and negative network security externalities for proprietary software or freeware we compare four alternative policies to manage network security i consumer self patching where no external incentives are provided for patching or purchasing ii mandatory patching iii patching rebate and iv usage tax we show that for proprietary software when the software security risk and the patching costs are high for both a welfare maximizing social planner and a profit maximizing vendor a patching rebate dominates the other policies however when the patching cost or the security risk is low self patching is best we also show that when a rebate is effective the profit maximizing rebate is decreasing in the security risk and increasing in patching costs the welfare maximizing rebates are also increasing in patching costs but can be increasing in the effective security risk when patching costs are high for freeware a usage tax is the most effective policy except when both patching costs and security risk are low in which case a patching rebate prevails optimal patching rebates and taxes tend to increase with increased security risk and patching costs but can decrease in the security risk for high risk levels our results suggest that both the value generated from software and vendor profits can be significantly improved by mechanisms that target user incentives to maintain software security

the impact of agricultural extension on farm production in resettlement areas of zimbabwe in this paper we revisit the contested issue of the impact of agricultural extension on farm production we exploit two features of the data available to us its longitudinal nature and explicit measures of farmer ability we find that after controlling for innate productivity characteristics and farmer ability either using household fixed effects estimation or by including a measure of farmer ability and village fixed effects access to agricultural extension services defined as receiving one or two visits per agricultural year raises the value of crop production by about 15 per cent this parameter estimate is statistically significant however we also find variability in these parameter estimates across individual crop years with the impact being markedly different in drought and non drought years collectively these results suggest that although access to farm level extension visits does increase productivity even after controlling for innate productivity characteristics and farmer ability results from single year cross sectional studies should be treated with caution

children and their parents a review of fertility and causality childbearing decisions are not made in isolation they are taken in concert with decisions regarding work marriage health investments and stocks as well as many other observable and non observable considerations drawing causal inferences regarding the effect of additional children on family outcomes is complicated by these endogenous factors this paper lays out the issues involved in estimating the effect of additional child births on family outcomes and the assumptions underlying the range of estimators and methodologies proposed in the economic literature the common pitfalls of these estimators are discussed as well as their potential to bias our interpretation of the effect additional births have on children and parents both in the existing literature and in future work in the face of changing patterns of childbearing and child rearing

intrahousehold allocation of education expenditure the case of sri lanka abstract this article uses conventional engel curve demand analysis as well as a double hurdle model to explore whether there are intrahousehold differentials in the allocation of education expenditure between boys and girls in rural sri lanka contrary to the case in most developing countries in sri lanka there was a significant bias favoring girls for 1990 91 and 1995 96 for age group categories 8 9 14 16 and 17 19 and in 2000 for age group categories 14 16 and 17 19 significant differences in enrollment favoring girls aged 17 19 explain part of the girl bias observed in 1990 91 and 2000 2001 but most of the bias is driven by positive expenditure given enrollment the biases favoring girls are observed at critical stages of the schooling career in the run up to key national exams the 8 9 age group captures the run up to the year 5 scholarship exams that are used to gain entry to the better performing secondary schools the 14 16 and 17 19 age groups capture those who read for important nationa

externalities and compulsary vaccinations abstract this paper challenges the conventional wisdom that because of the free rider problem a case can be made for compulsary vaccination against infectious disease for a very general class of models requiring that all individuals be vaccinated is strictly dominated by free choice the market allocation is not optimum and in the full information optimum some individuals would be compelled to be vaccinated this allocation can be achieved by taxes and subsidies however the government can exploit the revelation properties of vaccination and achieve an even better allocation than the full information optimum

the demand for primary schooling in madagascar price quality and the choice between public and private providers abstract we estimate a discrete choice model of primary schooling and simulate policy alternatives for rural madagascar among school quality factors the results highlight the negative impacts on schooling demand of poor facility quality and the use of multigrade teaching several grades being taught simultaneously by one teacher in public schools simulations indicate the feasibility of reducing multigrade in public schools by adding teachers and classrooms a policy that would lead to modest improvements in overall enrollments and would disproportionately benefit poor children given much higher price elasticities for poorer households raising school fees to cover some of the additional costs would strongly counteract these favorable distributional outcomes an alternative policy of consolidation of primary schools combined with multigrade reduction or other quality improvements is likely to be ineffective because of the strongly negative impact of distance to school

fertility regulation in an economic crisis abstractsubstantial international aid is spent reducing the cost of contraception in developing countries as part of a larger effort to reduce global fertility and increase investment per child worldwide the importance for fertility behaviors of keeping contraceptive prices low however remains unclear targeting of subsidies and insufficient price variation have hindered prior attempts to estimate the effect of monetary and nonmonetary contraceptive costs on fertility behavior using longitudinal survey data from the indonesia family life survey we exploit dramatic variation in prices and incomes that was induced by the economic crisis in the late 1990s to pin down the effect of contraceptive availability and costs as well as household resources on contraceptive use and method choice the results are unambiguous monetary costs of contraceptives and levels of family economic resources have a very small and well determined impact on contraceptive use and choice of method

malthus was right after all poor relief and birth rates in southeastern england the payment of child allowances to laborers with large families was widespread in early nineteenth century england this paper tests thomas malthus s hypothesis that child allowances caused the birth rate to increase a cross sectional regression model is estimated to explain variations in birth rates across parishes in 1826 30 birth rates are found to be related to child allowances income and the availability of housing as malthus contended the paper concludes by examining the role played by the adoption of child allowances after 1795 in the fertility increase of the early nineteenth century

literacy skills and welfare effects of participation in adult literacy programs abstractthis paper examines the effect of adult literacy program participation on household consumption in ghana the adult literacy programs in ghana are of special interest because they are more comprehensive than standard literacy programs and incorporate many additional topics we use community fixed effects combined with instrumental variables to account for possible endogenous program placement and self selection into program participation for households where none of the adults have completed any formal education we find a substantial positive and statistically significant effect on household consumption our preferred estimate of the effect of participation for households without education is equivalent to a 10 increase in consumption per adult equivalent the effects of participation on welfare for other households are smaller not statistically significant and become smaller the more educated the household is we find positive and statistically significant effects of participation on litera

improving quality versus increasing the quantity of schooling estimates of rates of return from rural pakistan abstract this paper s approach permits a more satisfactory assessment than previously of the rates of return to improving school quality versus increasing quantity in terms of labor earnings and their implications for educational policy in developing countries special data from rural pakistan collected for this study are used to make estimates within a conceptual framework that controls for important individual and household choices the results indicate that rates of return were much higher for investing in primary school quality or quantity than for investing in middle schools and at the primary school level somewhat higher for expanding low quality schools than for increasing quality in existing schools

intergenerational transfers in philippine rice villages gender differences in traditional inheritance customs abstract this paper examines education land and nonland asset transfers from parents to children in five rice villages in the philippines a model with family fixed effects explains transfers better than either individual heterogeneity or observed parent and child characteristics without family fixed effects families facing different land constraints exhibit significantly different patterns of educational investment in children in a subsample with completed inheritance daughters receive less education land and total inheritance but are compensated with nonland assets parents also exhibit preferential behavior towards children of the same gender daughters of better educated mothers receive more land nonland assets and total inheritance better educated fathers give land preferentially to sons but favor daughters in education

an economic analysis of expenditures on agricultural experiment station research experiment station research expenditures are responsive to economic and institutional forces a four equation model of resources allocation to state agricultural experiment station research consisting of demand and supply equations for research an equation allocating state governmental revenues to station research and an expenditure identity is presented a reduced form expenditure equation derived from this model is fitted to cross sectional data for forty eight u s states pooled together for 1960 1965 and 1970 a large share of the variance in per capita expenditures of state agricultural experiment stations is explained by the variables included in the model

school supply constraints and children s educational outcomes in rural ghana abstract studies of school attainment often fail to acknowledge the possibility that prices for all schooling levels affect the decision to attend any one schooling level in developing countries the assumption that schooling costs are constant throughout the education cycle is manifestly untrue this paper concentrates on the empirical implications of introducing schooling costs that increase with schooling level the results suggest that the cost of advanced levels of education influences decisions at the primary school level the relative magnitude of the cross price elasticities suggests that cross price effects should not be ignored when designing educational user fees

integrating behavioral choice into epidemiological models of aids increased hiv risk creates incentives for people with low sexual activity to reduce their activity but may make high activity people fatalistic leading them to reduce their activity only slightly or actually increase it if high activity people reduce their activity by a smaller proportion than low activity people the composition of the pool of available partners will worsen creating positive feedbacks and possibly multiple steady states early public health efforts may allow societies to reach more favorable steady states excerpt

the impact of piped water provision on infant mortality in brazil a quantile panel data approach abstract we examine the impact of piped water on the under 1 infant mortality rate imr in brazil using a recently developed econometric procedure for the estimation of quantile treatment effects with panel data the provision of piped water in brazil is highly correlated with other observable and unobservable determinants of imr the latter leading to an important source of bias instruments for piped water provision are not readily available and fixed effects to control for time invariant correlated unobservables are invalid in the simple quantile regression framework using the quantile panel data procedure in chen and khan chen s khan s semiparametric estimation of non stationary censored panel model data models with time varying factor econometric theory 2007 forthcoming our estimates indicate that the provision of piped water reduces infant mortality by significantly more at the higher conditional quantiles of the imr distribution than at the lower conditional quantiles except for cases of extreme underdevelopment these results imply that targeting piped water intervention toward areas in the upper quantiles of the conditional imr distribution when accompanied by other basic public health inputs can achieve significantly greater reductions in infant mortality

estimating the intrahousehold incidence of illness child health and gender inequality in the allocation of time in this paper the authors develop and implement a method for estimating the effects of infant morbidity on the differential allocation of time of family members based on discrete indicators of health and activity participation commonly available in survey data and within the context of a household model in which health is determined endogenously their estimates that take into account the simultaneity of health activity associations indicate that increased levels of infant morbidity significantly exacerbate existing differentials in the accumulation of human capital across teenage boys and girls in indonesia copyright 1990 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

the effect of pre primary education on primary school performance although the theoretical case for universal pre primary education is strong the empirical foundation is weak in this paper we contribute to the empirical case by investigating the effect of a large expansion of universal pre primary education on subsequent primary school performance in argentina we estimate that one year of preprimary school increases average third grade test scores by 8 percent of a mean or by 23 percent of the standard deviation of the distribution of test scores we also find that preprimary school attendance positively affects student s self control in the third grade as measured by behaviors such as attention effort class participation and discipline

governmental interventions and household behavior in a developing country anticipating the unanticipated consequences of social programs abstract estimates of the joint effects of governmental health education and family planning programs as well as sources of water on fertility child mortality and schooling are obtained from combined district level and household level data from rural india the estimates are used both to test the implications of a model of household decision making and to assess the effectiveness of the joint public provision of such services in shifting resources from increasing family size to augmenting human capital per person the results appear consistent with household optimizing behavior and suggest that reductions in the costs of medical services contraceptives and schooling and the improvement of water sources are mutually reinforcing alternatives for implementing the joint policy goals of reduced population growth and increased human capital formation

decomposing the gender gap in cognitive skills in a poor rural economy girls lag markedly behind boys in education in many developing countries which may slow economic growth and increase inequity this paper uses indicators of the output of the education production process cognitive skills to characterize and to investigate the determinants of the large educational gender gap in rural pakistan local school availability accounts for about a third of the total cognitive achievement gender gap and over two fifths of that in numeracy which implies that policies that increased local school availability for girls could reduce substantially the gender gaps in cognitive skills to further reduce these gender gaps will require policies that focus on the demand side of the market where our results suggest the response to modest changes in incentives may be high

health and wage a simultaneous equation model with multiple discrete indicators in this article we propose all econometric approach for estimating the simultaneouls effects of health and wages in a structural equations framework in the theoretical works of grossmana 1972a 1972b health is viewed as anl elldogen1oulsly determined capital stock the demand for health should rise with the wage rate as the rate of return to health investment increases with wage onl the other hand better health should raise market productivity and hence wages since health capital is an abstract theoretical concept it can hardly be measured quantitatively however most population surveys include various health indicators these indicators are usually discrete variables in the empirical work of grossman and benham 1974 these qualitative indicators are treated as continuous variables and two stage least squares estimation techniques are used this specification raises various econometric problems see e g goldberger 1964 pp 248 255 domencich and mcfadden 1975 and nerlove and press 1973 a satisfactory specification should take into account the discrete nature of the indicators our specification generalizes the dummy variables simultaneous equations system of heckman 1978 the measurement models of joreskog and goldberger 1975 and is closely related to the models of muthe n 1976 1979 muthen studies full information maximum likelihood procedures for estimation except for very simple cases this does not generally yield feasible or tractable procedures in this article we introduce a tractable procedure for statistical estimation and testing this specification and the estimation procedure is then applied to study the joint dependence of health and wages another departure of our approach from others is that we will test and correct the possible incompatibility of the various health capital indicators in the population surveys one may have subjective health indicators such as self evaluation of health which may reflect different populations perception of health we propose a statistical procedure for testing measurement compatibility and if required for correcting this problem this article is divided into two parts initially we describe the model specification estimation and statistical tests in a general simultaneous equation model with multiple discrete indicators in the second part of the paper we consider specification of a simultaneous equation model for health and wages the model

does food aid really have disincentive effects new evidence from sub saharan africa summary limited empirical evidence exists either to refute or confirm the pervasive belief that food aid has significant disincentive effects on recipient food production using household level data from rural ethiopia we demonstrate that while simple descriptive statistics appear consistent with the disincentive effects hypothesis once one controls properly for the endogeneity of food aid receipt no empirical support remains for the hypothesis that food aid creates disincentive effects among recipient households the macro economic evidence yields similar findings applying vector autoregression methods to national level data controlling for possible confounding variables we find that food aid has no disincentive effect on food production

women work and weil being in the middle east an outline of the relevant literature there is now an extensive literature on the role of women in economic development and the impact of development on their lives this article concentrates on the economic literature and discusses its importance for policies aimed at working women in the middle east it identifies the important strands and places the discussion within the wider context of women in the labour market in both developing and developed countries the general conclusion is that we are very far from having sufficient knowledge to implement effective policy or even to evaluate existing policies

economics of modern energy boomtowns do oil and gas shocks differ from shocks in the rest of the economy abstract the us shale boom has intensified interest in how the expanding oil and gas sector affects local economic performance research has produced mixed results and has not compared how energy shocks differ from equal sized shocks elsewhere in the economy what emerges is that the estimated impacts of energy development vary by region empirical methodology as well as the time horizon that is considered this paper captures these dimensions to present a more complete picture of energy boomtowns utilizing us county data we estimate the effects of changes in oil and gas extraction employment on total employment growth as well as growth by sector we compare this to the effects of equal sized shocks in the rest of the economy to assess whether energy booms are inherently different the analysis is performed separately for nonmetropolitan and metropolitan counties using instrumental variables we difference over 1 3 6 and 10 year time periods to account for county fixed effects and to assess responses across different time horizons the results show that in nonmetro counties energy sector multiplier effects on total county employment first increase up to 6 year horizons and then decline for 10 year horizons we also observe positive spillovers to the non traded goods sector while spillovers are small or negative for traded goods in metro counties there are no significant effects on total employment although positive spillovers are present in some sectors yet equal sized shocks in the rest of the economy produce more jobs on average than oil and gas shocks suggesting that policymakers should seek more diversified development

child growth shocks and food aid in rural ethiopia this brief summarizes the results of a gender impact evaluation study entitled child growth shocks and food aid in rural ethiopia conducted between 1995 and 1996 in ethiopia the study observed the impact of food aid on child growth and shocks in communities on the child level food aid has a positive significant impact on the growth in height of children the total amount of food aid appears on average to be sufficient to offset the negative effects of plot damage on child growth given the fact there remains a massive amount of child stunting there must be large amounts of mis targeting of aid girls seem to be more resilient to shocks than boys

dynamic epidemiology and the market for vaccinations abstract the intent of this paper is to raise the question of how and when externalities can arise in the market for vaccinations static and dynamic models of such markets are developed and compared a special case in a continuous time dynamic framework is examined and is found to be efficient i e there is no externality this is in contrast to the results from the static formulation raising doubts about the suitability of a static approach these results indicate that the question of whether there are externalities in individual immunization decisions is more involved than is generally supposed

working for god evidence from a change in financing of nonprofit health care providers in uganda what motivates religious nonprofit health care providers this paper uses a change in financing of nonprofit health care providers in uganda to test two theories of organizational behavior we show

endogenous fertility and optimal population size pareto optimality which is the standard criterion of efficiency in general equilibrium models takes population size as given and therefore cannot be directly applied to analyze the question of optimal population size the criterion then for optimal population size must be based on a more restrictive definition of optimality this paper extends peter diamonds 1965 golden golden rule growth model by assuming that individuals derive utility from their own consumptionand from their own children offspring are assumed to consume resources before reaching adulthood the authors show that the optimal steady state utility yields a higher population growth rate when it converges to the golden rule allocation they then demonstrate that a voluntary social security program in which the size of the transfer to a particular agent is directly tied to his own fertility leads the competitive allocation to be identical to the allocation corresponding to the maximum of the steady state utility of the representative individual

the effects of human capital on wages and the determinants of labor supply in a developing country abstract the heckman procedure is used to correct for sample selection bias in estimating wage offer and net labor market supply equations the findings show that wages are affected by education and experience in addition the wage offer is influenced by other genetic and environmental influences captured in the wage of one s father calories as predicted by exogenous instruments are also shown to influence the wage offer suggesting that better nutrition increases labor productivity the probability of market labor participation as well as the amount of net market labor supply declined with the size of paddy landholding in addition to the net market supply elasticity increasing with the amount of land owned and being lower for urban than rural workers

gender bias investments in children and bequests the impacts of pure sex preference and differential earnings opportunities by gender on investments in children are modelled with altruism if bequest constraints do not bind human investments are privately efficient with the higher earning gender receiving more education education does not depend on parental wealth the gender differential in bequests is ambiguous however even in this case when bequest constraints bind education may depend on wealth and it is also possible for the gender with better earnings opportunities to get less education the model is tested with data from philippine villages where bequest constraints are generally nonbinding the schooling differential slightly favors daughters estimated bequest behavior however reflects pure sex preference in terms of our model copyright 1995 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

evaluating the effects of optimally distributed public programs child health and family planning interventions this paper develops and tests an optimizing model determining the distribution of family planning and health subsidies across heterogeneous households and assesses the biases in cross area estimates of the health effects of such subsidies due to public resource optimization the model incorporates both health externalities and the endogenous response of the size of the recipient population to program subsidies longitudinal data describing child health and publicly provided family planning and health programs in 20 barrios in laguna province in the philippines are used to estimate the effects of such programs on child health and the relationships between the distribution of the programs and preprogram health levels the impact of a program on a particular childs health status is viewed as dependent upon the childs length of exposure to the program a basic feature of the model is the presence of health externalities which is shown to be sufficient along with plausible features of household behavior to make selective subsidization of fertility control either alone or in combination with health investment subsidies pareto efficient the model suggests that subsidization of fertility control is likely to be pareto efficient in the presence of health or human capital externalities when human capital and family size are gross substitutes and or when any per child human capital subsidies may substitute for direct subsidies to health investment and an equalizing distribution of the subsidies the highest family planning subsidies to the lowest health recipient households is efficient when both health and family planning subsidies are used fertility control subsidies minimize the subsidy burden for donors and are highest when total subsidy expenditures per child are greatest

what policies will reduce gender schooling gaps in developing countries evidence and interpretation summary this paper considers evidence for the effects of policies on gender gaps in education distinguishing between policies that are ostensibly gender neutral and those that explicitly target girls the demand for girls schooling is often more responsive than boys to gender neutral changes in school distance price and quality patterns which can be explained in a human capital investment model through assumptions about girls and boys schooling costs and returns among policies that target girls enrollments price incentives to households or schools and the provision of female teachers appear to be effective other interventions hold promise but have not been the subject of rigorous evaluation pointing to an important agenda for future research

effects of piracy on quality of information goods it is commonly believed that piracy of information goods leads to lower profits which translate to lower incentives to invest in innovation and eventually to lower quality products manufacturers policy makers and researchers all claim that inadequate piracy enforcement efforts translate to lower investments in product development however we find many practical examples that contradict this claim therefore to examine this claim more carefully we develop a rigorous economic model of the manufacturer s quality decision problem in the presence of piracy we consider a monopolist who does not have any marginal costs but has a product development cost quadratic in the quality level produced the monopolist faces a consumer market heterogeneous in its preference for quality and offers a quality level that maximizes its profit we also allow for the possibility that the manufacturer may use versioning to counter piracy we unexpectedly find that in certain situations lower piracy enforcement increases the monopolist s incentive to invest in quality we explain the reasons and welfare implications of our findings this paper was accepted by lorin hitt information systems

wage and employment growth in america s drug epidemic is all growth created equal the rise in drug overdose deaths in the united states since the turn of the millennium has been extraordinary a popular narrative paints a picture whereby opioid overdoses among white male less educated rural workers have been caused by reduced economic opportunities borne by such people in this article we causally test the validity of this theory by using bartik type variables to explore the relationship between local economic conditions and county opioid overdose death rates we add to the literature by exploring how both employment and wage growth in different types of industries are related to opioid overdose deaths for the population as a whole as well as for rural vs urban male vs female and white vs black populations we find mixed evidence our results confirm that wage and employment growth in industries more likely to employ low skill workers are important protective factors for rural white males however we also find evidence that economic improvements in low skill industries are just as important in protecting blacks and women against opioid overdoses and for workers in metro counties we also find evidence that employment growth in high paying industries has led to increases in opioid overdoes rates

who receives medical care income implicit prices and the distribution of medical services among pregnant women in the united states the distribution of medical services among pregnant married women in the united states in 1980 is very unequal this distribution is examined to assess the predominant effect of tax transfer and insurance schemes on the implicit prices of medical services facing women differing by socioeconomic status healthiness and race estimates of the determinants of the probability of receiving four major prenatal medical services are obtained controlling both for socioeconomic status and for initial health status as inferred from estimates of health technology determining birthweight results reject the hypotheses that medical services are provided only on the basis of medical need or are allocated in a market in which the implicit price of care is invariant to husband s income the combined effect of taxes and transfers is found to reduce the implicit price paid for these four medical services by rich compared to poor married women in the united states and thus to encourage their use by higher income and education groups

birth order and the intrahousehold allocation of time and education this paper develops a model of intrahousehold allocation with endogenous fertility which captures the relationship between birth order and investment in children it shows that a birth order effect in intrahouse hold allocation can arise even without assumptions about parental preferences for specific birth orders of children or genetic endowments varying by birth order the important contribution is that fertility is treated as endogenous a possibility that other models of intrahousehold allocation have ignored the implications of the model are that children with higher birth orders that is who are born later have an advantage over siblings with lower birth orders and that parents who are inequality averse will not have more than one child the model furthermore shows that not taking account of the endogeneity of fertility when analyzing intrahousehold allocation may seriously bias the results the effects of a child s birth order on its human capital accumulation are analyzed using a longitudinal

education gender gaps in pakistan is the labor market to blame abstract differential labor market returns to male and female education are one potential explanation for large gender gaps in education in pakistan we empirically test this explanation by estimating private returns to education separately for male and female wage earners this article contributes to the literature by using a variety of methodologies ordinary least squares heckman correction two stage least squares and household fixed effects in order to estimate economic returns to education the latest nationally representative data the pakistan integrated household survey 2002 are used earnings function estimates consistently reveal a sizable gender asymmetry in economic returns to education with returns to women s education being substantially and statistically significantly higher than men s the return to an additional year of schooling ranges between 7 and 11 for men and between 13 and 18 for women there are also large direct returns to women s education at low levels of schooling

bartik instruments what when why and how the bartik instrument is formed by interacting local industry shares and national industry growth rates we show that the typical use of a bartik instrument assumes a pooled exposure research design where the shares measure differential exposure to common shocks and identification is based on exogeneity of the shares next we show how the bartik instrument weights each of the exposure designs finally we discuss how to assess the plausibility of the research design we illustrate our results through two applications estimating the elasticity of labor supply and estimating the elasticity of substitution between immigrants and natives

us manufacturing understanding its past and its potential future abstract the development of the us manufacturing sector over the last half century displays two striking and somewhat contradictory features 1 the growth of real output in the us manufacturing se

aids treatment and intrahousehold resource allocation children s nutrition and schooling in kenya this brief summarizes the results of a gender impact evaluation study entitled acquired immunodeficiency syndrome aids treatment and intra household resource allocation children s nutrition and schooling in kenya conducted in late 2003 till present in kenya the study observed the impact of antiretroviral arv medications to human immunodeficiency virus infection hiv or aids on the time allocated to various household tasks by treated hiv positive patients and their household members on the individual level treating adult aids patients with arv treatment results in substantial improvements in the welfare of children living with the patients after nine months of treatment the increases in school attendance are maintained with no significant drop off over the time period of study for boys in particular the increase in hours of attendance is almost exactly equal to the treatment driven decrease in their hours of market labor supply the short term nutritional status of young children in adult patients households improves significantly also within six months after treatment is initiated for the patients not presented separately for boys and girls these gains in nutritional status can be expected to improve the physical and cognitive abilities of children and eventually their post school productivity levels funding for the study derived from the economic and social research council pfizer the world bank yale university s center for interdisciplinary research on aids the national institute of mental health the social science research council and the calderone program at columbia university

land inheritance and schooling in matrilineal societies evidence from sumatra abstract this paper explores statistically the implications of the shift from communal to individualized tenure on the distribution of land and schooling between sons and daughters in matrilineal societies based on a sumatra case study the inheritance system is evolving from a strictly matrilineal system to a more egalitarian system in which sons and daughters inherit the type of land which is more intensive in their respective work effort while gender bias is either non existent or small in land inheritance daughters tend to be disadvantaged with respect to schooling the gender gap in schooling however appears to be closing for the generation of younger children

the impact of school quality on earnings and educational returns evidence from a low income country abstract the expansion of education has been widely adopted as a key element in the development strategies of low income countries while there is substantial evidence on the benefits of greater educational attainment for subsequent labor market earnings empirical evidence on the role played by school quality is scarce this paper combines household survey data with unique data on school quality from honduras to study the importance of school quality as a determinant of earnings our objective measures of school quality capture teacher training school infrastructure and school crowding the results display strong positive effects of school quality on earnings and on educational returns these effects persist across a variety of model specifications

rural bound determinants of metro to non metro migration in the united states a general global precept is that agglomeration forces lead to migration from rural to urban areas yet for much of the time since the early 1970s more people have moved from metro to nonmetro u s counties the underlying causes of this pattern have changed over time with economic shocks and changing household preferences for instance the post 2000 period has seen a significant decline in domestic migration rates a significant increase in commodity prices that favor rural areas and potential changes in the valuation of natural amenities that would affect migration this article investigates the determinants of u s gross migration from metro to nonmetro counties and nonmetro to metro counties for the 1995 2000 and 2005 2009 periods in order to compare the differences in rural to urban and urban to rural migration as well as compare the 1990s to the 2005 2009 periods more specifically the present study extends the literature by more broadly examining the underlying factors associated with deconcentration and economic restructuring arguments of metro to nonmetro migration the article uses 1 extensive county to county migration flows and 2 the utility maximization theory that extends the framework of a discrete choice model the results show that population density distance to urban areas industry mix employment growth natural amenities and percentage of older people are key factors underlying these migration patterns we also find a slight fading of effects of natural amenities and population density and a slight increase in the effects of wage and employment growth from 2005 2009

a theory of competition among pressure groups for political influence this paper presents a theory of competition among pressure groups for political influence political equilibrium depends on the efficiency of each group in producing pressure the effect of additional pressure on their influence the number of persons in different groups and the deadweight cost of taxes and subsidies an increase in deadweight costs discourages pressure by subsidized groups and encourages pressure by taxpayers this analysis unifies the view that governments correct market failures with the view that they favor the politically powerful both are produced by the competition for political favors

endowments and the allocation of schooling in the family and in the marriage market the twins experiment 03 we show how comparisons between the within twin correlations of human capital outcomes across identical and nonidentical twins can be used to identify the variability in the individual specific component of endowments and the responsiveness of schooling to individual specific endowments in the family and in the marriage market even when schooling is measured with error estimates from two twins samples indicate that 27 42 percent of the variance in log earnings obesity is due to variability in individual specific endowments allocations of schooling reinforce specific endowments and individual specific earnings endowments of men and their wives schooling are negatively associated

migration selectivity and the effects of public programs abstract a model of the spatial distribution of mobile heterogeneous agents is formulated to assess how a price change or program subsidy that is location specific affects the composition of local residents via selective migration and thus biases evaluations of the effectiveness of the program based on its local consequences longitudinal data from colombia are used to test the implications of migration selectivity the findings confirm the existence of selective migration suggesting that local subsidies to human capital attract high income but within income groups low fertility households and those with low human capital endowments these migration patterns are shown to be consistent with the dominance of endowment over tastes heterogeneity in the population under plausible behavioral assumptions