government education expenditures in early and late childhood human capital investment in early childhood can lead to large and persistent gains beyond this window of opportunity human capital accumulation is more costly despite compelling evidence in support of this notion government education spending is allocated disproportionately toward late childhood and young adulthood we consider the consequences of a reallocation using an overlapping generations model with private and public spending on early and late childhood education taking as given the higher returns to early childhood investment we find that the current allocation may nonetheless be appropriate when we consider a homogeneous population this can hold for moderate levels of government spending with heterogeneity this can hold for middle income workers lower income workers by contrast may benefi tf rom a reallocation

share tenancy ownership structure and prevented planting claims in crop insurance a conceptual model based on opportunity cost and expected utility principles establishes linkages between the likelihood of prevented planting claims in crop insurance and existing share leasing arrangements internal farm business structures results of heteroskedastic probit estimation procedures indicate that simpler internal business structures and more dominant farmer tenant leasing position can increase the probability of submitting a prevented planting claim

ethnicity neighborhoods and human capital externalities the socioeconomic performance of today s workers depends not only on parental skills but also on the average skills of the ethnic group in the parents generation or ethnic capital this paper investigates the link between the ethnic externality and ethnic neighborhoods the evidence indicates that residential segregation and the external effect of ethnicity are linked partly because ethnic capital summarizes the socioeconomic background of the neighborhood where the children were raised ethnicity has an external effect even among persons who grow up in the same neighborhood when children are exposed frequently to persons who share the same ethnic background copyright 1995 by american economic association

borrowing constraints human capital accumulation and growth abstract borrowing constraints increase aggregate savings and therefore may increase growth this paper argues however that by reducing human capital accumulation borrowing constraints also have negative effects on growth these effects are discussed in an overlapping generations model with endogenous growth empirical evidence for oecd and developing countries lend support to the main predictions of the model

food preferences and nutrition in rural bangladesh t he dietary choice of households near subsistence levels of nutrient intake is one of obvious policy importance in many countries such as bangladesh national goals are set in terms of nutritional intake and there is heavy intervention in the markets for foods however little is known about the manner in which food preferences vary with food expenditure and nutrient intake the design of efficient programs to aid nutritionally deficient households in attaining minimal levels of nutrient intake requires information on all ownand cross price elasticities for both target and non target groups the net effect of a food price subsidy on the consumption of food nutrients cannot be predicted without knowledge of the complete elasticity matrix results presented below demonstrate that substitution effects can be so strong that the subsidization of certain foods quite often reduces nutrient consumption in this study demand equations for nine foods which allow for extremely flexible consumer price response are estimated from the individual budgets of 5 750 rural bangladeshi households estimation at the household level is preferred because it more readily permits the incorporation of household composition variables into the demand analysis such as household size occupation and employment status that are typically lost in aggregation there is also a greater range and variation in expenditure levels than found in grouped data this is of particular importance in the study of nutritional well being as it is the poorest households which are of special interest moreover the household sample provides sufficient degrees of freedom to estimate a simple varying parameter model which requires the estimation of 270 parameters previous econometric analysis of income class specific dietary choice has been limited and not altogether satisfactory pinstrup anderson de londono and hoover 1976 estimated complete sets of price elasticities for different income strata using frisch s scheme in order to study the impact of changes in relative prices on nutrient consumption their results are suspect because of the assumption of want independence necessary for this methodology to be valid alderman and timmer 1980 who were also concerned with studying the relationship between food price policy and nutrient intake by income classes econometrically estimated separate price coefficients for each income group by including slope dummy variables in their demand equations for rice and cassava in indonesia the inclusion of these dummy variables revealed surprisingly large differences in compensated price response across income groups although their results support the notion that poorer households respond differently to prices than the rich the limitations of their data constrained them to consider only two foods and to specify changes in price response which are discontinuous with respect to income i the formulation and estimation of the food demand equations is discussed in section ii below section iii presents the results of the estimation and discusses the nutritional implications of movements in relative food prices and other exogenous variables section iv summarizes our findings

estimating the demand for a new technology bt cotton and insecticide policies this article examines the potential demand for bt cotton in the southeast from information gathered in the first year of commercialization we combine revealed preference rp data on adoption of bt cotton varieties with stated preference sp data on willingness to adopt to estimate demand using a double bounded maximum likelihood procedure using estimated demand equations we simulate the costs of reducing conventional insecticide applications through subsidization of bt cotton results indicate that reducing cotton insecticide applications by 40 in the southeast would require a 21 acre subsidy with total annual program costs between 53 million and 60 million

early childhood education and economic growth abstract we study the effects of early childhood skill formation on productivity and schooling we add early childhood human capital to a standard continuous time life cycle economy and assume complementarity between educational stages agents are homogenous and choose the intensity of preschool education how long to stay in formal school labor effort and consumption the model is calibrated to the us from 1961 to 2008 and matches the data very well and closely reproduces the paths of schooling hours worked relative prices and gdp we find that early childhood education can explain a large part of the observed increase of years of schooling in the u s since 1961 and it was as important as formal education for the increase of labor productivity in the period furthermore we show that small reallocations of public expenditures from formal education to early childhood education would have sizable impacts on income per capita and productivity

uncertain altruism and investment in children the authors discuss the concept of parental uncertainty about their childrens altruism and the consequences for investment in childrens human capital in this paper we show that if parents are uncertain about their childrens altruism but are at least sure that they will receive some support from their children then the unique optimal investment is the efficient one uncertainty over the exact level of the retirement gift does not alter the conclusion of the perfect certainty case even when parents are risk averse alternatively parents may not know enough about their childrens altruism to feel completely confident that some gift will be forthcoming regardless of the size of their investment under this assumption we show that the optimal investment must be less than the efficient amount excerpt

determinants of the intrahousehold allocation of food in the rural philippines this study shows that the opportunity cost of time for husbands and wives can affect the intrahousehold distribution of food in a developing country equations which explain the relative allocation of calories within households were estimated for husbands wives and children with data for the rural philippines the estimating equation is derivable from both a joint household utility function and a bargaining model because the same households were included in the four survey rounds the various observations for a given individual were averaged for each variable in the estimation procedure wages were estimated using the heckman approach

substitution between goods and leisure in a developing country the paper explores the substitutability between goods female leisure and male leisure we find that goods and leisure are not separable we then adapt the almost ideal demand system aids to include leisure in the system in the same manner as commodities the model is not sensitive to variations in the assumption of total time available for each individual s work and leisure results from sri lanka indicate the marginal propensity to consume leisure is quite high especially in rural areas this finding has important implications for transfer programs designed to raise food consumption a somewhat surprising complementarity between male and female leisure was also observed a number of goods were found to be complements to both male and female leisure

returns to policy oriented agricultural research the case of barley fertilization in syria summary in 1984 icarda and its syrian partners initiated farming systems research that led to a change in national fertilizer allocation policy evidence is assessed on the policy influence of the fertilizer response research and on the impact of switching to a more inclusive policy that relaxed the government s probation of fertilizer allocation to barley interviews with key informants make a persuasive case for attribution estimates from economic surplus models are consistent with a high rate of return on investment in the policy oriented research this case study provides a contribution to the limited empirical literature on returns to research under policy distortions

returns to education a further international update and implications this paper updates evidence on the returns to investment in education by adding estimates for new countries and refining existing estimates to bring the total number of country cases to over 60 the new cross country evidence confirms and reinforces earlier patterns namely that returns are highest for primary education the general curricula the education of women and countries with the lowest per capita income the findings have important implications for directing future investment in education which for efficiency and equity purposes should concentrate on these priority areas

nutritional functional classification study of panama abstract despite significant progress wide spread malnutrition persists in panama this article describes a study which found that over half the malnutrition in the country is clustered in functional groups economically connected to the agricultural sector and which indicates that food availability is a serious problem for 25 of the population food intake deficits were equally prevalent among the urban and rural populations dietary composition was not seen as the principal problem rather malnutrition problems are linked to low wages and poor access to public services a nutrition policy for panama must be centred first on employment and income generation and then on extending and maintaining public health and nutrition services particularly for the extremely poor in the central provinces food policy per se would not seem a priority area for public intervention

nutrient demand and the allocation of time evidence from guam this paper presents an econometric study of nutrient intake in guam which explicitly accounts for household time allocation and household capital variables the empirical framework is based on a household production model of nutrient consumption food expenditure and the allocation of time between labour leisure and food preparation activities the study finds evidence that 1 capital and wage variables have significant impacts on households nutrient demands 2 income wage and educational status have very different effects on the nutrient choices of low calorie households than on the nutrient choices of high calorie households and 3 a family s participation in the food stamp programme leads to higher levels of food expenditure but this impact is attributable to the purchase of more costly taste characteristics in food rather than to the purchase of more nutritious foods

public budget composition fiscal de centralization and welfare we study the optimal degree of fiscal decentralization in a dynamic federal economy where governments decide on budget size and its allocation between public education and infrastructure spending we find that full centralization of tax and expenditure policies is optimal when infrastructure productivity is similar across regions when differences are not too large partial centralization is optimal with strong differences full decentralization becomes optimal national steady state output tends to be highest under full decentralization we provide a justification for the mixed evidence regarding the oates conjecture by showing that full dominates partial decentralization despite being inferior to complete decentralization on etudie le degre optimal de decentralisation fiscale dans une economie federale dynamique ou les gouvernements decident de la taille du budget et de son allocation entre les depenses en education publique et en infrastructures on decouvre qu une pleine centralisation des taxes et des depenses est optimale quand la productivite des infrastructures est la meme dans toutes les regions quand les differences ne sont pas trop importantes une centralisation partielle est optimale en presence de fortes differences la pleine decentralisation est optimale la production nationale en regime permanent tend aetre la plus elevee quand il y a pleine decentralisation on fournit une justification pour les resultats mixtes obtenus quant a la conjoncture de oates en montrant que la pleine decentralisation est preferable a la decentralisation partielle meme si elle est inferieure a la decentralisation complete

public education expenditures taxation and growth linking data to theory governments around the world have taken a prominent role in financing education while justifications for this involvement are varied a common motivation is that education expenditures are a key to sustained economic growth economic theory provides a foundation for this belief many papers in the endogenous growth literature have formalized a link between public education expenditures human capital accumulation and long term growth while theory assigns public education expenditures a key role in growth empirical support for the link is mixed as highlighted by blankenau and simpson 004 the disconnect between theory and data can be reconciled by taking a closer look at the theory in nearly every model where growth is fueled by public education expenditures a nonmonotonic relationship between expenditures and growth can arise public education spending increases growth while taxes may decrease growth leaving the net effect ambiguous thus economic theory shows that to identify the growth effects of expenditures one must account for any offsetting effects of the requisite taxation most empirical investigations of these effects do not explicitly control for the method of finance however in contrast we make the relationship between expenditures taxation and growth central to our analysis we estimate a

the economics of schooling production and efficiency in public schools n recent years public and professional interest in schools has been heightened by a spate of reports many of them critical of current school policy these policy documents have added to persistent and long standing concerns about the cost effectiveness and fairness of the current school structure and have made schooling once again a serious public issue as in the past however any renewed interest in education is likely to be short lived doomed to dissipate as frustration over the inability of policy to improve school practice sets in this frustration about school policy relates directly to knowledge about the educational production process and in turn to underlying research on schools although the educational process has been extensively researched clear policy prescriptions flowing from this research have been difficult to derive 2 there exists however a consistency to the research findings that does have an immediate application to school policy schools differ dramatically in quality

joint determination of food consumption and production in rural sierra leone estimates of a household firm model abstract this paper investigates the determination of food consumption for rural households in sierra leone that produce the foods which they consume a household firm model is estimated with seven commodities including five foods non foods and labor as compared to three commodities in past studies such food disaggregation permits tracing of the effects of socioeconomic variables on household nutrient availability household specialization in production is such that censored data is a problem a tobit approach is used to correct for this for most crops the own price effects on consumption remain negative when a price change is allowed to shift the budget constraint by effecting the profits from home production elasticities of calorie availability with respect to toal expenditure are found to be sizeable varying little by expenditure group the price elasticities of calorie availability are generally positive however an important exception occurs for price of the staple food rice this exception has several important policy implications which are explored

demand for cereal grains in asia the effect of urbanization abstract this paper analyzes the effects of urbanization on demand for cereal grains rice wheat and coarse grains in nine asian countries a complete demand system almost ideal demand system in linear form is estimated in two stages based on aggregate time series data from 1960 to 1988 in the high income countries i e japan and south korea urbanization was observed to significantly reduce demand for cereal grains in the lower income countries demand for cereal grains either increased or remained the same with urbanization among cereal grains urbanization has had negative effects on demand for rice and coarse grains but consistently positive effects on demand for wheat only japan and thailand among the countries studied have negative income elasticities of demand for total cereal grains and for rice in particular hence rice remains a necessity and a normal good in most asian countries previous estimates of income elasticities of rice based on time series aggregate data tend to be lower than those based on cross section household level data when urbanization is explicitly specified in the demand model the estimates of income elasticities from time series data turn out to be consistent with those from cross section data

religions fertility and growth in south east asia through indirect inference we investigate the extent to which religions supposed pronatalism is detrimental to growth via the fertility education channel using censuses from south east asia we first estimate an empirical model of fertility and show that having a religious affiliation significantly raises fertility this effect is stronger for couples with intermediate to high education levels we next use these estimates to identify the parameters of a structural model of fertility choice on average catholicism is the most pro child religion increasing spending on children followed by buddhism while islam has a strong pro birth component redirecting spending from quality to quantity we show that pro child religions depress growth in the early stages by lowering saving physical capital and labor supply these effects account for 10 to 50 of the actual growth gaps between countries over 1950 1980 at later stages of growth pro birth religions lower human capital accumulation explaining between 10 and 20 of the gap between muslim and buddhist countries over 1980 2010

food security policy in a stochastic world abstract food security may be increased by variance reducing strategies by food aid or by development strategies this paper uses a korea cge model subjected to random fluctuation in world prices and domestic food productivity to evaluate these policies we find that poverty reducing development strategies are the most food security strategies

flexible consumer demand functions and linear estimation comment in a recent article in this journal swamy and binswanger sb claim that consumer demand equations in real income and relative prices can be obtained directly by differentiating a cost function in which output is replaced by real income the advantage of this approach they maintain is that we can obtain observable demand functions linear in parameters which are integrable into wellbehaved expenditure and indirect utility functions this approach to deriving demand functions however is considerably less general than sb maintain their method of derivation assumes that changes in utility can be approximated by changes in real income changes in utility are proportional to changes in real income for any given price vector but this proportionality factor will change when prices change unless indifference curves are everywhere parallel this latter condition obtains only when the direct utility function is homothetic implying unitary income elasticities throughout this means as a description of the real world sb s method can have only local validity not global validity like roy s identity this also means that the three functional forms proposed by sb are best regarded as statistical demand functions integrable into an arbitrary neoclassical utility function only at some base point sb s method of deriving consumer demand functions is to replace the utility level in the hicksian demand functions by real income they maintain this approach is possible because certain index numbers can be estimated which when used to deflate nominal income provide estimates of changes in real income that correspond exactly to changes in utility levels p 676 the problem with this approach is that in contrast to output in producer theory utility is unobservable thus arbitrary changes in utility cannot be calculated from changes in real income unless we know the parameters of the utility functions this is true regardless of how accurately real income is measured this is equivalent to saying that in general the relationship between changes in utility and changes in real income is not independent of prices to verify this claim consider the total differential of the hicksian demand function xi u p which can be written 1 d log x

disaggregating food consumption parameters designing targeted nutritional interventions abstract this article is concerned with a new nutritional intervention strategy which is based on the belief that malnourished people eat different types of food to the well nourished the calculation of disaggregated food consumption parameters can identify inferior food commodities and the subsidization of these commodities will target intervention to those most in need the effectiveness of this policy depends on the understanding of its theoretical basis the author introduces the policy maker to this by reviewing the theoretical basis for consumption analysis and then several key studies

does school quality matter returns to education and the characteristics of public schools in the united states this paper estimates the effects of school quality measured by the pupil teacher ratio average term length and relative teacher pay on the rate of return to education for men born between 1920 and 1949 using earnings data from the 1980 census we find that men who were educated in states with higher quality schools have a higher return to additional years of schooling rates of return are also higher for individuals from states with better educated teachers and with a higher fraction of female teachers holding constant school quality measures however we find no evidence that parental income or education affects average state level rates of return

a protectionist foodgrain price policy the case of rice in panama abstract panama has pursued a protectionist price policy for rice with domestic prices well above the world market level the government marketing authority purchases sufficient rice to support the established price level and stores or exports the surplus although producers benefit this policy imposes significant costs on consumers government expenditures and economic efficiency one policy recommendation is to bring domestic prices in line with the international level although free trade is one possibility a market stabilization programme could be retained at a minimum panama s rice price should reflect domestic demand and not production costs the unfavourable rice fertilizer price ratio also deserves attention

a cross section demand analysis of spanish provincial food consumption i follow the differential approach in building three demand models of spanish cross province food consumption patterns the models include quadratic income terms for estimating the widely varying income responses one expects from cross section data the proposed models are also flexible in permitting alternative levels of aggregation across goods a nonnested testing procedure is used to identify the best model both the flexibility of the quadratic income term and the flexibility of alternative aggregation levels are important in the analysis of spanish food consumption patterns

on the choice offunctional forms in agricultural production analysis empirical results obtained by an analyst may depend on prior choice of functional form three alternative parametric specifications of the cost function are considered these are generalized leontief translog and normalized quadratic functions performance of these functional forms is evaluated by allen elasticities of substitution biases in technical change and some theory based hypotheses all three parametric specifications yielded mixed results together empirical results reinforce the need for model specification searches

nutritional classification study of peru who and where are the poor abstract in peru in 1984 approximately 60 of the households with malnourished children were engaged in agricultural production or wage work these nutritional problems were associated with insufficient incomes inadequate diets low levels of schooling poor housing quality inadequate access to safe water unsanitary conditions and high levels of childhood morbidity from diarrhoeal disease for the long run the solution is to reverse the longstanding bias against agriculture and labour particularly in the highlands direct nutritional interventions must be undertaken urgently to assist the households with severe malnutrition this article identifies these households by occupational group and geographical locale

will developing country nutrition improve with income a case study for rural south india aggregate estimates of food expenditure are consistent with such a possibility implying income expenditure elasticities close to one however the high degree of aggregation at which such estimates are made means that the considerable increase in price per nutrient as income increases is ignored and the nutrient elasticities are therefore overstated estimates for a rural south indian sample indicate that this bias is considerable and that the true nutrient elasticities with respect to income may be close to zero

ethnic capital and intergenerational mobility this paper analyzes the extent to which ethnic skill differentials are transmitted across generations i assume that ethnicity acts as an externality in the human capital accumulation process the skills of the next generation depend on parental inputs and on the quality of the ethnic environment in which parents make their investments or ethnic capital the empirical evidence reveals that the skills of today s generation depend not only on the skills of their parents but also on the average skills of the ethnic group in the parent s generation

welfare effects of selected food grain policies in india abstract government s policy interventions in the market for food grains affect supply as well as demand in this paper the welfare effects of certain food grain policies are analysed while taking into account the interdependence of the various sectors in the economy adequate structure is built into the model in order to study the effects of a dual price structure on farmers supply response and also the effects of public distribution schemes on the aggregate demand for food grains policy implications are derived by computing the market clearing prices and their movement under alternative assumptions regarding the nature of the market

education borrowing constraints and growth abstract this paper studies the effects of educational borrowing constraints on economic growth and welfare we consider a three period lived overlapping generations model in which individuals finance their educational expenditures by borrowing we show that if the elasticity of human capital to educational expenditure is great enough the relationship between the tightness of the constraints and the growth rate is inverted u shaped when the constraints are binding moreover when the constraints cease to be binding the growth rate is constant we also show that a relaxation of the constraints cannot be pareto improving even if the growth rate rises

income effects of donated commodities in rural panama analyses of food expenditure data from rural households in panama showed that the marginal propensity to consume food out of additional income in the form of donated food is not different than the marginal propensity to consume food out of money income for households participating in the veraguas supplemental feeding program these results suggest that take home food programs can have significant income mediated impacts on the acquisition of food and accordingly food supplementation programs should be designed to maximize the income value of the donated commodities in terms of prices prevailing in the local markets

schooling and economic growth a king rebelo experiment with human capital abstract education is added to the standard neoclassical growth model by calibrating a human capital technology to the empirical evidence on schooling simulation experiments patterned after king and rebelo 1993 american economic review 83 908 931 are conducted when agents act as if they are infinitely lived interest rates are too high and the rise in school spending is too weak over the transitional growth path when schooling is inefficiently low due to binding intergenerational credit constraints interest rates deviate only moderately from the steady state level and the historical rise in school spending is fully explained

transitional dynamics and economic growth in the neoclassical model neoclassical transitional dynamics are a central element of standard macroeconomic theory quantitative experiments with the fixed savings rate models of the 1960s showed lengthy transitions thus potentially rationalizing sustained differences in growth rates across countries the authors investigate quantitative transitional dynamics in various neoclassical models with intertemporally optimizing households lengthy transitions occur only with very low intertemporal substitution generally when one tries to explain sustained economic growth with transitional dynamics there are extremely counterfactual implications these result from the fact that implied marginal products are extraordinarily high in the early stages of development copyright 1993 by american economic association

economic versus accounting rates of return for farm land a well known characteristic of agriculture is the traditionally low accounting current rates of return on farm land ratios of cash rent to land values as well as reported rates earned on total assets of crop farms typically have fallen in the three to six percent range over time despite swings in general inflation and changes in the levels of real returns to farm assets melichar 1979 barry 1980 these accounting rates of return are frequently much below the interest rates on financial assets and the measured returns on

ex post moral hazard in prevented planting this article analyzes the existence of moral hazard in prevented planting pp in the united states the pp provision is defined as the failure to plant an insured crop by the final planting date due to adverse events if the farmer decides not to plant a crop the farmer receives a pp indemnity late planting lp is an option for farmers to plant a crop while maintaining crop insurance after the final planting date crop insurance may alter farmers behavior in selecting pp or lp and could increase the likelihood of pp claims even though farmers can choose lp this study finds evidence that a farmer with higher insurance coverage tends to choose pp more often ex post moral hazard spatial panel models attest to the existence of the ex post moral hazard in pp empirically empirical results show that the pp ratio has a positive relationship with insurance coverage in the case of corn production

inequality and growth why differential fertility matters we argue that inequality and growth are linked through differential fertility and the accumulation of human capital we build an overlapping generations model in which dynasties differ in their initial endowment with human capital growth the income distribution and fertility are endogenous due to a quantiy quality tradeoff families with less human capital decide to have more children and invest less in education when initial inequality is high large fertility differentials lower the growth rate of average human capital since poor families who invest little in education make up a large fraction of the population in the next generation a calibrated model shows that this fertility differential effect is quantitatively important we also provide empirical evidence to confirm the links between inequality differential fertility and growth suggested by the model

market intervention policies for increasing the consumption of nutrients by low income households this study employs a market equilibrium displacement approach to examine the nutrient consumption effects of market intervention programs such as food subsidies income transfers and agricultural input subsidies the results permit comparison of the direct treasury costs of achieving marginal increases in nutrient intake with alternative programs when applied to a case study of the food markets and population of cali colombia it was found that a marginal increase in caloric intake among the poor could be achieved at lowest cost with a consumer subsidy of certain cereals although black market activity might raise this cost to that of an income subsidy

flexible consumer demand systems and linear estimation food in india demand equations in real income and nominal prices can be obtained directly by differentiating a cost function in which output is replaced by real income this derivation is possible because recent advances show that certain index numbers provide close approximation to real income without knowledge of the utility function parameters three flexible functional forms corresponding to well known flexible cost functions were used to estimate food demand elasticities time series and cross sectional data from ten indian states for twenty years were used the estimates provide a complete set of expenditure price and cross price elasticities for four commodities some close substitutes

school quality and black white relative earnings a direct assessment the wage differential between black and white men fell from 40 percent in 1960 to 25 percent in 1980 it has been argued that this convergence reflects improvements in the relative quality of black schools to test this hypothesis we assembled data on pupil teacher ratios annual teacher pay and term length for black and white schools in the eighteen segregated states from 1915 to 1966 these data are linked to estimated returns to education for southern born men from different cohorts and states in 1960 1970 and 1980 improvements in the relative quality of black schools explain 20 percent of the narrowing of the black white earnings gap between 1960 and 1980

social supply and the evaluation of food policies this study develops a model of social supply based on the hypothesis that society desires that efficient producers remain in business even if their enterprise is too small to withstand the losses caused by extreme price declines the analysis shows that this concept can be linked to the desire of society of maintaining small producers income above a minimum level and is consistent with a well behaved social welfare function the study further argues that both social demand and social supply functions may be useful for evaluating policies and projects with socially relevant effects

intergenerational transfers and the accumulation of wealth h t ouseholds acquire wealth from two sources they save out of income they have earned and they receive transfers from other people the first method of wealth accumulation goes under the name of life cycle saving in which people save during their working lives and dissave after retirement the second involves either an inter vivos transfer that is a transfer between living people or a bequest a transfer that occurs at the death of the donor while inter vivos transfers and bequests will arise in dynastic models where preferences include a taste for the well being of one s descendents few empirical life cycle models reflect these concerns indeed a sharp debate has arisen over the ability of the simple life cycle model to explain observed wealth accumulation understanding the relative sizes of these sources of wealth accumulation affects a variety of issues for example the effects of government debt social insurance public transfer programs estate taxes and incentives for charitable giving depend to some extent on the magnitude and nature of private saving and transfers of wealth analyses of the inequality of wealth may depend on whether most of wealth is earned or received as transfers appropriate policies for encouraging private saving may look rather different depending on whether most saving is to be consumed later in life or passed along to the next generation finally evidence on transfer patterns relates to more fundamental

the demand for calories in developing countries this paper uses household survey data on consumption to analyze the determinants of calorie intakes in developing countries it relies on characteristic demand analysis for a demand function specification for calories it explores the effect of calories price differences income and other socioeconomic factors on the intracountry and intercountry distribution of calorie intakes the paper reaches three broad conclusions i both income and price elasticities of demand for calories are below unity and are substantial for poorer consumers ii even a moderate increase in calorie prices implies a large nutritional sacrifice for the poor if present income growth and distribution trends continue and iii if moderate redistribution policies permit a substantial portion of the income increase to be allocated to the poor sizable calorie price increases would not rule out elimination of malnutrition

the distribution of benefits from technical change among classes of consumers and producers an ex anteanalysis of beans in brazil abstract because new agricultural technology in developing countries has sometimes bypassed small farmers who are an important social group in low income countries design of technology specifically appropriate to small farmers has been advocated as a policy goal this paper appraises the comparative returns to investment in small farm biased scale neutral and large farm biased technology for bean production in brazil a consumer surplus model is developed to estimate the distribution of benefits among producing sectors and classes of consumers while previous studies have relied on geometrical approximations to measure economic benefits as the area under the supply shifts here an exact analytic solution is obtained by integrating from the supply axis scale neutral technology leads to significant small farmer benefits while maximizing benefits to consumers large farm biased technology results in less benefits to small farmers and consumers and only minor gains to large farmers when compared to scale neutral technology small farm biased technology produces the greatest gains to small farmers but the lowest level of benefits to consumers

more evidence on nutrition demand income seems overrated and women s schooling underemphasized abstract malnutrition is widespread in the developing world controversy continues concerning the roles of income household size and women s schooling on nutrient demand empirical estimates for nicaragua suggest that income elasticities are small and inversely associated with income levels there are some economies of scale in household size the elasticity for women s schooling is higher than those for income or household size and women s backgrounds are important the results cast doubt on the strong emphasis the world bank and others have placed on income and suggest that schooling may be working through tastes not only through productivity