the dynamic cost and persistence of asset inequality in an agrarian economy abstract a growing literature suggests that asset inequality can be economically costly in the presence of agency costs that constrain labor and capital markets unclear in this literature is whether asset markets and optimal individual accumulation of self finance capacity suffice to eliminate costly inequality over time this paper uses numerical dynamic programming methods to explore this question with a model of an initially inegalitarian agrarian economy while an egalitarian asset distribution emerges over time the process involves sufficiently great productivity losses along the way that a redistributive policy could improve on the market s performance by both equity and efficiency criteria

china s collectivisation puzzle a new resolution according to total factor productivity trends in chinese agriculture china achieved productivity gains both when collectivising 1954 58 and when decollectivising 1979 84 its agriculture if the productivity gains from decollectivisation were due mainly to eliminating the incentive problems of collective farms how the initial collectivisation could also have been associated with gains in productivity presents a major historical puzzle we suggest as an answer the possibility that agricultural production in china was widely organised on a household basis until 1958 despite the collectivisation of property rights and that the formation of the agricultural producers co operatives reduced the inefficiencies in factor allocation that existed following china s land reform

regional growth linkages from agriculture pioneering research on downstream linkages from agriculture is said to demonstrate that consumption links rather than production links are the main source of indrect growth effects that these consumption links take the form of labour intensive goods and services produced locally and that the largest farm enterprises are most locally multiplicative of activities mopping up surplus rural labour this article has two purposes first the methodologies assumptions and data base for the quantification of the local and non local regional multiplier effects from agricultural development are examined second the contradictory interpretations for agricultural policy which have arisen from these exercises of quantification are discussed and an attempt made to explain their bases

agricultural land relations in the developing world in this paper we draw on a number of methodological approaches which have been used to explain land relations tenancy sharecropping and interlinking distress sales dualistic land ownership distributions classes and land reform and their variations over space and time we indicate that the explanatory power of theories on land relations hinges on the complexity market imperfections and distortions admitted in the analysis

economic relationship between access to land and rural poverty in nepal in the present socio economic structure of nepal land is the main source of income and consumption for the majority of nepalese this study analyses the economic relationship between access to land and poverty in nepal by establishing the link between land and consumption as well as land and income a generalised additive model gam and ordinary least squares ols demonstrate that greater access to land increases income and consumption of the household and thereby reduces poverty the significant marginal value of land for both consumption and income implies that an effective land reform policy could well be an effective approach to alleviate rural poverty however land reform must come as part of a larger overhaul cluster analysis shows that land reform should target appropriate subgroups within the community in order to differentiate those who would make use of the extra land from those who would not and apply appropriate strategies to each subgroup it reveals the importance of subgroups in determining an appropriate strategy for tackling poverty

analyzing the welfare improving potential of land in the former homelands of south africa this article contributes to the debate on the role of land in reducing poverty in rural south africa it uses the year of arrival in the former homelands as an instrument for land access and size this identification strategy is based on the fact that african households were forcibly relocated to the homelands during the apartheid due to increasing population pressure later arrivals were less likely to be assigned land the results show that land has a large positive effect on household welfare because the homelands are relatively disadvantaged areas these results provide a lower bound for the positive effects of land on household welfare

access to capital and agrarian production organisation there are two problems both universal that entrepreneurs in any economy must contend with firstly an agent generally has access only to a limited amount of working capital secondly workers hired by an agent are subject to moral hazard and this necessitates their supervision this paper models for an agrarian economy the constraints imposed on entrepreneurs activities by these two problems and endogenously determines the various organisational forms of production as well as the allocation of resources that will obtain with a simple model we endeavour to explain a diverse set of empirical observations pertaining to the less developed countries in terms of the general processes that determine the distribution of income among the various agents and the hierarchical relationships that develop among them agricultural production typically involves a period of several months between the time the inputs are purchased and the time the output is marketed access to working capital and hence to the credit market thus plays an important role in a farmer s production decisions the distribution of access to credit in turn tends to be an important determinant of income distribution in poor agrarian economies credit is invariably rationed according to the ability to offer collateral the amount of working capital a farmer can mobilise therefore depends on the amount of land he owns which is often a good proxy for his overall wealth and thus his ability to offer collateral further since hired hands have a propensity to shirk they need to be supervised and therefore the

property rights and the political organization of agriculture we propose a general equilibrium model where the economic organization of agriculture and the political equilibrium determining the security of property rights are jointly determined in particular because the form of organization may affect the probability and distribution of benefits from future property challenges it may be shaped in anticipation of this impact property rights security may then be secured at the expense of economic efficiency the model provides a framework for understanding why in some contexts land is redistributed primarily via land sales and tenancy markets but via politics and conflict in others we test some implications of the theory using a five decade panel dataset that traces changes in the extent of tenancy and tenancy reform across 15 indian states

agro export production and peasant land access examining the dynamic between adoption and accumulation abstract new technologies and export opportunities have often contributed to dualistic agrarian structure and intense social conflict in latin american a switching regression model developed in this paper explicitly links export adoption and land accumulation patterns controlling for pre existing differentiation processes applied to survey data gathered from peasant households in guatemala the model provides evidence of equitable structural change induced by a recent export boom in vegetable crops however the optimism of these results is tempered by consideration of the unfavorable longer term market dynamics confronting small scale producers

measuring product diversity abstract the diversity of a set of products can be defined as a function of the bilateral distances between its elements we show how these bilateral distances can be represented by parameters in a utility function and measured from observable data

chronic poverty in south africa incidence causes and policies abstract the purpose of this article is threefold first to summarize recent research that helps distinguish chronic from transitory poverty in south africa second to identify groups that are especially prone to chronic poverty in south africa and venture estimates as to how many such people there are and third to examine how an understanding of chronic poverty could enhance the fight against poverty generally the article makes the case that in taking the lead in the fight to eradicate poverty the government would be wise to disaggregate the poor according to those who are chronically and transitorily poor two policy areas are discussed in light of this recommendation namely the unemployment crisis and the prospects for future growth in the formal and informal sectors and rural land reform and the policy choices it presents the article begins with a brief historical sketch and an overview of socioeconomic policies since 1994

poverty dynamics in rural orissa transitions in assets and occupations over generations abstractwe investigate whether historic land distribution determines stagnation or development of indian villages the empirical analysis is motivated by the banerjee and newman 1993 model of occupational choice and economic development family histories are collected for a random sample of 800 households households are classified into economic categories according to the assets occupations mix at present and at grandfather s time transitions are described and for a remote district explained by the historic village land distribution we also investigate the role of social identity and find that scheduled tribes are more likely trapped in poverty than scheduled castes

meso economic filters along the policy chain understanding the links between policy reforms and rural poverty in latin america abstract the paper clarifies the meso economy concept by defining it as comprising both the market mechanisms and administrative procedures through which policy decisions and market signals trickle down to the household level three main bodies of literature are reviewed the policy oriented literature in which the meso economy was initially considered the transaction cost approach analyzing market and policy failures and the micro economy level of agricultural household models the paper develops a synthesis of macro meso and micro economic perspectives which focuses on the roles played by three levels of filters intervening along the policy chain implications for policy and research are drawn

modeling farm households price responses in the presence of transaction costs and heterogeneity in labor markets we develop a farm household model to analyze price responses of farm households this model incorporates various types of transaction costs as well as labor heterogeneity nonproportional variable transaction costs or labor heterogeneity imply that production and consumption decisions become nonseparable even when the household buys or sells labor an empirical model is estimated using data from midwest poland the results show that nonproportional variable transaction costs and labor heterogeneity significantly influence household behavior not all price elasticities however change significantly if these are neglected

agricultural workers credit rationing and family networks in rural mexico abstractwe use mixed methods and first hand household data in mexico to investigate credit practices by households engaged in agricultural wage employment quantitative analysis shows evidence of rationing in the formal sector but also suggests the existence of mitigating mechanisms qualitative analysis provides additional insights first income patterns associated with agricultural wage generate income smoothing needs that are sometimes better met by the informal sector second family networks can perform key functions as gateways to the formal sector through specific informal arrangements that inject flexibility into formal rules and procedures

credit access human capital and class structure mobility this article examines the impact of microenterprise credit programmes on class structure mobility in developing countries it develops a model that endogenously generates an eight fold class structure class membership is determined by optimal choice of labour activity which is a function of access to credit and human capital endowments predictions from the model suggest that better access to credit will foster upward class mobility among self employed entrepreneurs and that this upward class mobility will be accentuated among entrepreneurs with high levels of human capital theoretical predictions from the model are compared with data on class structure mobility collected first hand in western guatemala empirical results show that upward class structure mobility increases substantially with access to credit and also suggest that the combined effect of innate entrepreneurial ability and credit access has a greater impact on upward class structure mobility than the interaction between formal schooling

land accumulation dynamics in developing country agriculture abstractunderstanding land accumulation dynamics is relevant for policy makers interested in the economic effects of land inequality in developing country agriculture we thus explore and simultaneously test the leading theories of micro level land accumulation dynamics using unique panel data from paraguay the results suggest that farm growth varies systematically with farm size a formal rejection of stochastic growth theories that is gibrat s law and that titled land area may have considerable influence on land accumulation furthermore our estimates indicate that a dualistic agrarian structure is the likely product of the unfettered operation of land markets

household returns to land transfers in south africa a q squared analysis abstract the south african land reform programme has been widely criticised for its slow pace as well as its apparent lack of contribution to poverty reduction however there is little systematic evidence of the impact of land transfers on their beneficiaries due to data scarcity this paper combines econometric evidence based on official household surveys with qualitative data collected specifically to triangulate and complement the econometric analysis the qualitative data analysis confirms the plausibility of the econometric finding that on average beneficiaries do not gain from participation and suggests that the main reason for the disappointing impact of participation is the incompatibility of consultant led land use plans to land grantees skills

rural market imperfections and the farm size productivity relationship evidence from pakistan the subject of this article is the relationships between farm size and productivity and between farm size and profitability in the developing countries the recent controversies over the inverse size output relationship are reviewed and a framework is provided that explains the inverse relationship based on plausible assumptions about imperfections in the markets for labor land credit and risk from this framework a set of testable hypotheses are derived the hypotheses are tested on recent farm level panel data from pakistan a strong inverse relationship between farm size and yield is present in the sample even when household fixed effects are used to account for unobserved heterogeneity moreover the suggested market imperfections framework is consistent with the data

a theory of real wage growth in ldcs abstract a general equilibrium framework is presented to explain a variety of developmental experiences the demand side is modelled by assuming a system of preferences that incorporate engel s law in a stark way the framework explains why poverty might be impervious to industrial progress in some countries it also explains why countries which have been able to boost the exports of manufactured goods have been more successful in raising real wages in their economies than countries which have continued to export primary goods the framework indicates how the initial conditions in terms of the level and distribution of wealth influence the growth of real wages in an economy

risk aversion and credit constraints in farmers decision making a reinterpretation in 1976 the agricultural development council sponsored a conference on risk uncertainty and agricultural development which has been summarised in a volume edited by james roumasset jean marc boussard and inderjit singh 1979 the volume provides an excellent review of the state of the art at that time however as discussed in the summary chapters of that volume there were few theoretical empirical or policy issues on which clear conclusions could be reached on the basis of knowledge then available in the intervening years progress has been made on a number of issues as a result of both empirical investigations and theoretical advances this paper concentrates on advances which have relevance to the controversy about the relative roles of risk aversion and credit constraints in limiting farmers investment levels especially for purchased inputs such as seeds or fertilizers in particular we review recent experimental studies on the extent of risk aversion among farmer populations in developing

land reforms poverty reduction and economic growth evidence from india recognition of the importance of institutions that provide security of property rights and relatively equal access to economic resources to a broad cross section of society has renewed interest in the potential of asset redistribution including land reforms empirical analysis of the impact of such policies is however scant and often contradictory this paper uses panel household data from india together with state level variation in the implementation of land reform to address some of the deficiencies of earlier studies the results suggest that land reform had a significant and positive impact on income growth and accumulation of human and physical capital the paper draws policy implications especially from the fact that the observed impact of land reform seems to have declined over time

enterprise reform and corporate governance in russia a quantitative survey the objective of this paper is to verify the range and depth of the study on corporate governance in russia through a comprehensive survey of 202 research works with regard to the internal structure of russian corporations a great deal of research has been conducted in a relatively short time since the collapse of the soviet union by many highly motivated researchers who have provided insightful perspectives these achievements however place too much emphasis on the empirical analysis of the interrelation between ownership structure and corporate restructuring leaving some critical themes open for further discussion as the 21st century begins a well balanced research base should be established in this field in order to identify the reality of russian corporations from a multifaceted perspective

missing ness in action selectivity bias in gps based land area measurements land area is a fundamental component of agricultural statistics and of analyses undertaken by agricultural economists while household surveys in developing countries have traditionally relied on farmers own potentially error prone land area assessments the availability of affordable and reliable global positioning system gps units has made gps based area measurement a practical alternative nonetheless in an attempt to reduce costs keep interview durations within reasonable limits and avoid the difficulty of asking respondents to accompany interviewers to distant plots survey implementing agencies typically require interviewers to record gps based area measurements only for plots within a given radius of dwelling locations it is therefore common for as much as a third of the sample plots not to be measured and research has not shed light on the possible selection bias in analyses relying on partial data due to gaps in gps based area measures this paper explores the patterns of missingness in gps based plot areas and investigates their implications for land productivity estimates and the inverse scale land productivity relationship using multiple imputation mi to predict missing gps based plot areas in nationally representative survey data from uganda and tanzania the paper highlights the potential of mi in reliably simulating the missing data and confirms the existence of an inverse scale land productivity relationship which is strengthened by using the complete multiply imputed dataset the study demonstrates the usefulness of judiciously reconstructed gps based areas in alleviating concerns over potential measurement error in farmer reported areas and with regards to systematic bias in plot selection for gps based area measurement

farm strategy self selection and productivity can small farming groups offer production benefits to farmers in post socialist romania abstract this paper addresses two questions why are romanian farmers continuing to place land in cooperative forms of farming when theory suggests that private farming is more productive and are there efficiency gains to be had from cooperative farming endeavors results from an econometric selection model suggest that smaller endogenously developed farming cooperatives such as family societies provide benefits over private farming strategies under certain conditions this paper questions the wholesale rejection of cooperation around production and challenges policy to move away from the typically dichotomized presentation of agrarian structure as being a trade off between private small scale farming and large scale collective farming

inverse productivity or inverse efficiency evidence from mexico abstractusing a unique panel data set from rural mexico we find strong evidence of a negative relationship between farm size and both productivity and technical efficiency large farms not only have a lower value of output per hectare than small farms they also produce further from the efficiency frontier our findings suggest that in spite of the ongoing transformation of agricultural supply chains and economists recommendations for small farmers to exit crop production there may be sustained advantages for smallholder farms our analysis offers new insights into inverse farm size relationship the productivity efficiency relationship and the use of stochastic frontier techniques

credit constraints and agricultural productivity evidence from rural rwanda while potentially negative impacts of credit constraints on economic development have long been discussed conceptually empirical evidence for africa remains limited we use a direct elicitation approach on a national sample of rwandan rural households to empirically assess the extent and nature of credit rationing in the semi formal sector and its impact using an endogenous switching model elimination of all constraints could increase output by some 17 per cent implications for policy and research are spelled out

determinants and effects of income diversification amongst farm households in burkina faso using four years of household data from three agroecological zones in burkina faso sahelian sudanian and guinean the article examines the determinants and effects of household income diversification harvest shortfalls and terms of trade are found to drive diversification but land constraints do not income diversification is associated with higher incomes and food consumption and more stable income and consumption over years

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

creating rural livelihoods some lessons for south africa from experience elsewhere abstract a development path for south africa that will create jobs and reduce poverty must include the encouragement of greater labor intensity in agriculture especially of smallholder farming which was suppressed under apartheid there is however widespread skepticism on both the left and the right about the prospects for more labor intensive farming but this skepticism is called into question by both theory and evidence of the advantages of small scale production in certain products and circumstances there are now numerous examples of this in many parts of the world the paper discusses the preconditions for the development of such farming in south africa including land reform and the need to reorient investment and supporting economic and technical services research training marketing credit from the privileged large scale white farms to the undercapitalized and neglected black smallholders

consumption and investment in resource pooling family networks this paper examines a novel motive for resource pooling in family networks in rural economies to relax credit constraints and facilitate investment in non collateralizeable assets for which credit market imperfections are most binding we thus complement established literatures examining risk sharing motives for resource transfers within family networks as well as motives based on kinship tax obligations we do so exploiting the progresa program data in which family networks can be identified households are subject to large exogenous resource inflows and detailed responses on consumption and an array of investments can be tracked in a household panel over five years we find that for every dollar that accrues to the family network through progresa transfers food consumption expenditures increase by around 65c for both households eligible for progresa and ineligible members of the same family network hence the marginal propensity of families to invest save out of every dollar is around 35 and we document how this is channelled towards easing credit constraints poorer network members face in financing non collateralizable investments into their children s human capital we show these consumption and investment benefits of being embedded within a family network are sustained five years after households first experience resource transfers from progresa hence the interplay between resource inflows and resource pooling by family networks can place network members on sustained paths out of poverty this article is protected by copyright all rights reserved

factor markets and resource allocation in colonial punjab it is often argued that agricultural factor markets in colonial india were underdeveloped leading to inefficient resource use and slow agricultural development however there is little econometric evidence on these issues this article outlines a model which incorporates the factor market imperfections discussed in the literature and tests the model against data from the punjab there is in the statistical sense evidence of resource misallocation however these effects are too small to be of much economic significance

aggregation and imperfect competition on the existence of equilibrium we present a new approach to the theory of imperfect competition and apply it to study price competition among differentiated products the central result provides general conditions under which there exists a pure strategy price equilibrium for any number of firms producing any set of products this includes products with multi dimen sional attributes in addition to the proof of existence we provide conditions for uniqueness our analysis covers location models the characteristics approach and probabilistic choice together in a unified framework to prove existence we employ aggregation theorems due to prekopa 1971 and borell 1975 our companion paper caplin and nalebuff 1991 introduces these theorems and develops the application to super majority voting rules we present a new approach to the theory of imperfect competition and apply it to study price competition among differentiated products the central result is that there exists a pure strategy price equilibrium for any number of firms producing any set of products in addition to the proof of existence we provide conditions for uniqueness our model both unites diverse strands of the earlier literature and opens up uncharted areas for future analysis in particular we expand the traditional one dimensional framework to allow for multi dimen sional product differentiation our approach involves twin restrictions on consumer preferences one on individuals preferences the other on the distribution of preferences across society these are generalizations of the restrictions supporting 64 majority rule presented in caplin and nalebuff 1988 to prove existence we apply a new technique of aggregation this technique is valuable in a variety of other problems in the companion paper we use the aggregation result to generalize our earlier work on 64 majority rule and to characterize the relationship between the distribution of human capital and the distribution of income caplin and nalebuff 1991 there are additional applications in statistics and in search theory we begin with a brief review of the early literature on imperfect competition describing in more detail the existence problem and previous solutions section 3 presents our twin assumptions and shows that they cover many standard cases in section 4 we introduce the aggregation theorem and use it in the analysis of demand functions the proof of existence of equilibrium is in section

product differentiation and oligopoly in international markets the case of the u s automobile industry this paper develops and estimates a model of the u s automobile industry on the demand side a discrete choice model is adopted that is estimated using micro data from the consumer expenditure survey the estimation results are used in conjunction with population weights to derive aggregate demand on the supply side the automobile industry is modelled as an oligopoly with product differentiation equilibrium is characterized by the first order conditions of the profit maximizing firms the estimation results are used in counterfactual simulations to investigate two trade policy issues the effects of the ver and exchange rate pass through

collective agricultural production a solution for transition economies abstract the paper examines theoretical reasons and provides examples for productivity differences between agricultural service cooperatives and collectives service cooperatives can utilize economies of scale enhance competitiveness and provide technical information advantages that often outweighed problems of free riding low investment and excessive political intervention agricultural collectives while not adding substantial advantages are in addition associated with problems of supervision and effort supply tendencies to substitute casual workers or mechanization for regular members and low investment incentives while collective forms of organization in transition economies respond to high risk and market imperfections they do so inefficiently policies that create conditions for service cooperatives to compete may lead to large productivity gains

testing household specific explanations for the inverse productivity relationship the inverse relationship between land productivity and farm size is an old and puzzling empirical regularity most explanations for this relationship rely on market imperfections that jointly determine the farm size and the household s shadow price of some productive inputs we use plot level data from the icrisat vls to assess whether these household specific theories can explain the puzzle the data exhibit plots of different sizes being simultaneously cropped by the same household the inverse relationship is shown to hold true with the same magnitude across the plots of each household thus cross household heterogeneity does not suffice to explain the puzzle

the impact of credit on peasant productivity and differentiation in nicaragua abstract an endogenous switching regressions framework is used to structure and identify the impact of credit on small farm food production in nicaragua the results which emerge weakly support the hypothesis that credit had a positive impact on production and could be expected to reduce the pattern of structurally unbalanced growth in nicaraguan agriculture however the estimated impact is of a form which implies a process of differentiation and unequal growth in the peasant sector in the wake of the new opportunities afforded by credit

subsidy or market reform rethinking china s farm consolidation strategy chinese food security policy is anchored increasingly on the conviction that domestic grain production should be greatly enhanced and the best way to do so is to expand farm production scale to that end an increasing stream of public investment has been directed to the grain sector in the form for example of farm expansion subsidies our purpose is to assess the potential impacts of china s farm scale expansion on both yields and per hectare economic returns analysis of a large sample of farm household production data finds with some exceptions that grain yields likely will decline as farm size grows compromising food self sufficiency targets more importantly in only isolated cases would per hectare economic returns decline with size thus an emphasis on reducing farmland transactions costs may stimulate cropland consolidation and achieve the desired long term structural transformation

barriers to participation of the poor in south africa s land redistribution abstract land redistribution is being characterized as poverty alleviation for rural south africa this paper argues that the poor have less inclination to move the distances demanded by the redistribution have less labor available for farming are less able to afford the program s up front costs have fewer farming specific skills and have less capacity to cope with agricultural risk therefore the poor are likely to be rationed out of participation in the program and the land redistribution will have little effect on rural poverty unless demand led targeting is dropped and ancillary programs are employed to make land redistribution attractive for the poor

state credit programs and the peasantry under populist regimes lessons from the apra experience in the peruvian amazon abstract a study near iquitos peru finds that a national agricultural program implemented in the late 1980s which provided peasants with access to credit secure land tenure and grassroots organization promised to reduce rather than improve the welfare of intended beneficiaries new economic conditions and strategic behaviors engendered by the program threatened to combine through a process of community enclosure and competitive exclusion to undermine the subsistence viability of peasant communities general lessons are drawn for more effective rural development programs ones that pay particular attention to direct and indirect feedback effects of macroeconomic policy the factors that limit peasant economic competitiveness and to the fundamental spatiality of development processes

common fallacies in the debate on the transition to a market economy fallacies and other lessons leszek balcerowicz words and the concepts they express exert a powerful influence on political debate and policy decisions in transition economies in this introductory essay the principal architect of the first radical reform programme in europe after the fall of the berlin wall develops a lexicon of common fallacies in the political debate and introduces many of the main themes of the volume one common fallacy is that of country specificity ukraine is different what worked or did not work elsewhere is not relevant here some countries may indeed have specific economic problems viz the huge military industrial sector in ukraine but economic theory is clear about which policies are best for basic problems macroeconomic stabilization as the appropriate response to hyperinflation price liberalization and liberalization of supply are the prescribed therapy for massive shortages etc so there are useful lessons to be learned from prior experience by the same token erroneous interpretation of those experiences can give credence to mistaken policy arguments for example the argument that whatever has been done before in the west must be right is itself clearly wrong similarly balcerowicz argues that china s success does not prove the universal merits of gradualism the agricultural reforms of the late 1970s in china were in practice surprisingly radical the essay identifies many other pitfalls in reasoning about transition experience several having to do with the failure to apply ceteris paribus reasoning for example the fall in output in 1991 in all the countries connected with the former soviet union including finland was caused in large part by the collapse of their trade with the union and certainly not exclusively by the policies they followed there are numerous other examples

climbing the development ladder economic development and the evolution of occupations in rural china we study how occupations evolve across space and time during the development of an economy using a data set on more than 200 villages from 8 provinces in china we examine the main occupations that have characterised china s labour markets since the economic reforms our findings reveal a systematic evolutionary pattern of occupational emergence the evolution of occupations proceeds from traditional and fairly simple forms of subsistence agriculture to modern more complex manufacturing and service firms our findings suggest that rural development in china is being built by a process that can be described by the climbing of a development ladder with each step up the ladder denoting the economy s transition into a more complex occupational regime

household sectoral choice and effective demand for rural credit in india an analysis of the icrisat data from three indian villages raises concern about the extent of rationing mechanism inhibiting the spread of formal credit in rural india where a significant proportion of households do not have any outstanding loan or borrow from the informal sector only a limited dependent econometric analysis of the factors jointly determining household sectoral choice and effective demand for informal loan conditional on whether a formal loan is available suggests that compared to formal loan easy and adequate access and prompt recovery are significant determinants of the popularity and viability of informal rural credit among sample households also some households substitute labour income to ease the extent of credit thus rationing of the formal credit is not the only factor inhibiting the spread of formal credit in the study villages

farm size and productivity in malawian smallholder agriculture this article contributes to the limited literature on farm size and productivity in smallholder agriculture in sub saharan africa farm survey data and the results from a linear programming farm household model provide evidence for a positive relationship between farm size and productivity in both labour scarce and land scarce smallholder farming in malawi during the 1980 s the absence of an inverse relationship is explained in terms of failures in land capital and produce markets with acute capital constraints which affect both capital and labour inputs on smaller farms implications for rural development policies are discussed

land reform as commenced business the evidence against stopping abstract in the new paradigm institutions are long term endogenous thus the aims of land reform must be compatible with replace or substitute for initial incentives and power structures many reforms e g compulsory collectives are not redefinition of land reform is therefore needed yet the case for private land redistribution with ceilings remains the inverse relationship rests firmly on lower cost labor transactions in small farms though large but competitive transport or processing firms which enjoy lower cost capital transactions may be needed crucial is the impact of the postreform structure on livelihoods especially for the growing rural majority near landless workers new style market based reforms have potential probably best combined with old style ceilings substantial compensation with urban taxpayers sharing costs alternative off farm prospects and progressive taxes on large landholdings or bequests

land inheritance and market transactions in uganda studies on the role of nonmarket land transactions remain limited this paper addresses two questions is land inheritance driven by underdeveloped land markets how does land inheritance influence land disposal and acquisition we use a switching regression model on household data from rural uganda we find that the initially landless or near landless households due to little or no land inheritance obtain land through land markets while those that are land rich dispose of land through land sales and bequests the results suggest that a process of land equalization is unfolding within the sample

a dynamic option value for institutional change marketable property rights in the sahel in this article we use dynamic programming methods to create an option value measure of the value of the institutional innovation of marketable property rights this measure has two properties that are important to understanding institutional change it is truly dynamic and it allows for agent heterogeneity in the case of west africa we find that the collapse of customary risk management institutions is a vital part of the demand for marketability rights as agents struggle to smooth income and consumption in its wake we find that the social efficiency implications of this demand for institutional innovation are ambiguous

the gender gap in agricultural productivity the role of market imperfections abstractthis paper hypothesises that labour and credit market imperfections by discouraging off farm income generating activities and restricting access to inputs respectively affect female farm productivity more deeply than male productivity the paper develops a theoretical model which decomposes the contribution of various market imperfections to the gender productivity gap empirically we show that agricultural labour productivity is on average 44 per cent lower on female headed plots than on those managed by male heads 34 per cent of this gap is explained by differences in labour market access and 29 per cent by differences in credit access

estimation of limited dependent variable models with dummy endogenous regressors applied economists have long struggled with the question of how to accommodate binary endogenous regressors in models with binary and nonnegative outcomes i argue here that much of the difculty with limited dependent variables comes from a focus on structural parameters such as index coefcients instead of causal effects once the object of estimation is taken to be the causal effect of treatment several simple strategies are available these include conventional two stage least squares multiplicative models for conditional means linear approximation of nonlinear causal models models for distribution effects and quantile regression with an endogenous binary regressor the estimation strategies discussed in the article are illustrated by using multiple births to estimate the effect of childbearing on employment status and hours of work

rural wages labor supply and land reform a theoretical and empirical analysis land reform is one of the most mentioned of the theoretical policy instruments discussed in the development literature yet relatively little attention has been paid to the wage rate consequences of such a program despite the fact that perhaps more than one half of rural families in a developing country receive a substantial proportion of their income from wage earnings in agriculture one reason for this lacuna may be that the determination of wages and family labor supply in the agricultural sector of ldcs has also been somewhat neglected particularly in the context of a heterogeneous labor force 2 the subsistence or institutional wage models of w arthur lewis john fei and gustav ranis and gerald rodgers for instance offer no theory of how rural wage levels or differentials are set and thus provide little guidance on how wage rates would be affected by changes in land ownership patterns more recently pranab bardhan and t n srinivasan david newbery and clive bell and pinhas zusman who formulate general equilibrium market or bargaining models determining endogenously the rental share paid by tenant sharecroppers have assumed that agricultural wage rates are exogenous or determined only by nonagricultural factors all of these models assume that rural labor is homogeneous another reason why the potential wage impact of a land reform program may have received little attention is that models of peasant family behavior such as those of a k sen dipak mazumdar and robert mabro typically embody two restrictive assumptions which would tend to make the equalization of landholdings appear wage augmenting although this implication has never been formally derived these assumptions are that 1 agriculture is dualistic with small farm families facing lower shadow prices of labor leisure than large farm landlords because of impediments to labor mobility and 2 agricultural households are dichotomous small farmers employ family labor and maximize utility while large farms only utilize wage labor and maximize profits data from a 1970 71 allindia survey of over 5 000 households collected by the national council of applied economic research3 indicate however that almost all cultivator households large and small participate actively in the labor market as either buyers or sellers of labor services with almost 88 percent of households cultivating a gross cropped area less than 1 5 acres utilizing some hired labor seventynine percent of these small farm households associate professor yale ujniversity the research embodied in this paper was supported in part by a grant from the ford and rockefeller foundations program in support of social science and legal research on population policy and with funds from the u s agency for international development under order no aid otr 1432 helpful suggestions and comments were provided by james l mccabe mark gersovitz an anonymous referee the managing editor and members of the economic growth center yale university i am also grateful to the members of the research program in development studies princeton university for the use of their facilities research assistance was provided by james devine anne morgan and roberta robson inotable exceptions are r albert berry mark gersovitz and m a rahman all of these authors however employ geometric analyses with differing assumptions leading to wholly different predictions regarding wage effects none consider the heterogeneity of agricultural labor pay attention to questions of stability or attempt to apply their models to data 2lnformation on the differential impact of alternative agricultural policies including land reform on sex or age specific wage rates is not only important in settling income distribution and equity issues but as suggested in an article by the author and robert evenson may have significant implications for population growth and schooling as well 3for a more detailed discussion of these data see the author

land distribution and international agricultural productivity the unequal distribution of agricultural land is often cited as a source of inefficiency in agriculture previous cross country studies of agricultural productivity differences though have not considered land inequality this article addresses this issue by using cross country data on inequality in operational holdings of agricultural land from deininger and squire 1998 in an estimation of an agricultural production function the gini coefficient for land holdings is found to have a significant negative relationship with productivity this is consistent with the existence of heterogeneity in productivity by farm size within countries a one standard deviation drop in the gini coefficient implies an increase in productivity of 8 5

hired labor use decisions in cassava producing households of sub saharan africa sub saharan africa is the only developing region of the world where agricultural output has been trailing population growth for most of the last three decades farming systems in the region are inherently risky because they are fundamentally dependent on the vagaries of weather in addition it is a region of crises poverty civil strife and hiv aids attention must therefore be focused on improving the production of crops that could thrive under these circumstances because of its tolerance of extreme drought and low input use conditions cassava is perhaps the best candidate in this regard and cassava is a basic food staple and a major source of farm income for the people of the region the use of hired labor is important for its production growth because cassava root yield responds positively to the application of hired labor this article based on farm level information collected from six major cassava producing countries of africa within the framework of the collaborative study of cassava in africa identifies strategic variables affecting the hired labor use decisions of producing households the characteristics of the household head age and number of years of formal education the size of the household farm good market access and population pressure are found to motivate households to apply hired labor in cassava production these observations underscore the need for investing in people education and in infrastructure market access as possible tools for improving food production in the region the positive effect of farm size also suggests that some kind of land reform which would put more farmland at the disposal of farm households could be favorable to improving cassava production

productive efficiency of specialty and conventional coffee farmers in costa rica accounting for technological heterogeneity and self selection a steep decline in coffee prices at the producer level led to considerable pressure for farmers in costa rica and producer countries all over the world one possible reaction was moving to specialty markets where price pressure was perceived to be lower we use original survey data from 2002 2003 and 2003 2004 to analyze the factors influencing participation in specialty markets and to estimate separate production functions for specialty and conventional coffee farmers allowing for farm specific inefficiencies applying a sample selection framework we find significant selection bias in the sub sample of specialty farmers and evidence for the overestimation of efficiency if this bias is not adequately controlled for among the most important factors that influence farm specific efficiency levels in the two sub samples are the availability of additional income activities experience in coffee cultivation and membership in cooperatives based on the results we derive policy recommendations to improve farmers production performance and ability to cope with the effects of the coffee crisis these policy measures include the provision of extension services with respect to farm management skills the creation of income opportunities in rural areas and the support of farmer owned cooperatives

equilibrium credit rationing of small farm agriculture it is often argued that externally imposed contractual restrictions lead to inequitable credit rationing this paper argues that unrestricted laissez faire markets may also inequitably ration credit a formal model which grants borrowers autonomy in credit application and use demonstrates that adverse incentive and selection effects may cause banks to endogenously impose interest rate restrictions and ration small farms out of the credit market consequently liberalization of financial markets may be insufficient to guarantee small farms access to credit

new perspectives on farm size and productivity abstract the farm size and productivity debate has been limited by the focus on land or labor productivity generally showing respective productivity advantages to smaller or larger sized farms our purpose is to provide new perspectives on the debate by bringing together evidence from a set of novel case studies in both rich and poor countries common to them are the adoption of total factor productivity tfp as the comparative performance measure and the reliance on panels of farm micro data the present article presents a synthesis of findings from five case studies in i malawi tanzania and uganda ii bangladesh iii brazil iv australia and v the united states the preponderance of evidence from these studies suggests that there is no single economically optimal agrarian structure rather it appears to evolve with the stage of economic development certain farm sizes face relative productivity advantages such as small farms in africa but with economic and market growth that smallholder advantage will likely attenuate moving toward constant and eventually increasing returns to size yet importantly small farms may be quite dynamic and need not be a drag on agricultural growth until perhaps well into the development process

financial market efficiency in an agrarian economy microeconometric analysis of the pakistani punjab the shadow price of capital in production is a useful indicator of the efficacy of the rural financial system using data on participants and non participants in a small farm credit programme from the pakistani punjab this article estimates the shadow price of capital endogenous switching regressions techniques are employed to control for the likely heterogeneity of borrowers versus non borrowers results indicate that an individual selected at random from the population of small farmers would experience a 200 per cent rate of return on the first rupee borrowed from the small farm credit programme indicating a high shadow price of capital and a prima facie case for small farm credit programmes

what determines female autonomy evidence from bangladesh abstract this paper examines the determinants of female autonomy within households in a developing country in particular we investigate the relative contributions of earned versus unearned income in enhancing women s autonomy and the role of employment outside of their husband s farm in a simple theoretical model it is demonstrated that earned income could be more important than unearned income in empowering women using data from rural bangladesh empirical estimations confirm this prediction and also reveal the surprising fact that it is not employment per se but employment outside their husbands farms that contributes to women s autonomy the data also point to the importance of choosing the correct threat point in theoretical analyses of female autonomy

privatisation the market for corporate control and capital flight from russia the estimates of the amount of capital flight vary widely ranging from a low of 30 billion toa high of 300 billion 1privatization the market for corporate control and capital flight from russiaronald w introbedepartment of economics university of w estern ontario1 introductionwhile the data are ambiguous and estimates vary considerably there seems to be a generalconsensus that some perhaps a substantial amount

credit as insurance in agrarian economies abstract this paper examines consumption credit as an insurance mechanism in agrarian economies it explains the more rapid adoption of new technology in the green revolution by large farmers who had greater access to consumption credit the paper also demonstrates how the emergence and expansion of consumption credit markets by mitigating the need for hoarding in order to meet consumption contingencies enhances growth by encouraging investment

economic benefits and costs of land redistribution in zimbabwe in the early 1980s summary evidence on the performance of zimbabwe s early land reform effort is mixed in this paper we use a unique micro data set with information on land reform beneficiaries and a control group of nonbeneficiaries and employ propensity score matching to examine household and per capita benefits associated with land reform combining this information with estimates on the cost of land reform we find that the economic return is positive but modest its magnitude depends on assumptions about the opportunity costs of land and the reasons for the observed increase in the size of resettled households

technical change and labor absorption in asian agriculture some emerging trends abstract increased labor absorption in agriculture has been widely held to be the key to solving unemployment problems in developing asia following the historical experience of east asian countries the new seed fertilizer technology interacting with expansion of irrigation and cropping intensity initially increased labor absorption in wheat and rice production however evidence from recent village studies indicates that new labor saving chemical and mechanical innovations originating in the developed countries are being rapidly adopted by farmers of the developing countries owing to their private cost reducing characteristics this international transfer of technology contributes to increased productivity but results in net reductions of agricultural labor use recognition of the declining capacity of the agricultural sector for labor absorption indicates the need to seek solutions to unemployment problems in the off farm sector

monopolistic competition with endogenous specialization in the familiar spatial model of monopolistic competition on the circle a product is identified by a single locational characteristic representing its brand or variety the ability of a variety to compete with other varieties a given distance away its specialization as quantified by transportation losses or how rapidly the melting iceberg melts is exogenously given in the standard model here specialization is a choice variable selected by the firm a monopolistically competitive general equilibrium is derived where the degree of specialization is endogenously determined along with other variables implications are noted the central contribution is to show that the effect of endogenizing specialization is to make the hotelling lancaster chamberlin model of monopolistic competition isomorphic to the analytically much more tractable dixit stiglitz ethier formulation without sacrificing the appealing concept of product distance

pension transfers and farm household technical efficiency evidence from south africa this article analyzes the effect of entitlements from the old age pension program of south africa on household technical efficiency using a sample of farm households in south africa s kwazulu natal province the analysis is at the household level and off farm activities are considered as additional outputs in a nonparametric estimation of technical efficiency this approach captures the jointness between farm and off farm activities the pension s effect is identified by exploiting the age eligibility criteria in the pension program results show a positive effect of the pension and suggest that this large cash transfer can improve households ability to make use of the best available technologies

can unobserved heterogeneity in farmer ability explain the inverse relationship between farm size and productivity abstract the well known inverse relationship between farm size and productivity is usually explained in terms of diminishing returns with respect to land and other inputs coupled with various types of market frictions that prevent the efficient allocation of land across farms we show that even in the absence of diminishing returns one can provide an alternative explanation for this phenomenon using endogenous occupational choice and heterogeneity with respect to farming skills

does supervision matter some hypothesis tests using indian farm level data abstract a model is developed and estimated to test for heterogeneity of family and hired labor in agricultural production and to estimate the impact of employer supervision on the productivity of hired labor plot level data are used from a rice growing village in semi arid tropical india the hypothesis that family and hired labor are homogeneous inputs was rejected results indicate that family member supervision is required to increase hired labor productivity output loss attributable to operating at reduced supervision intensity was greater than 10 on over 40 of the plots

the food in security impact of land redistribution in south africa microeconometric evidence from national data summary the south african land reform program has been widely criticized for its slow pace as well as its apparent lack of contribution to poverty reduction no econometric evidence of the impact of land transfers has been provided to date and this paper attempts to fill this gap by considering the impact of receiving a land grant on households food insecurity propensity score matching and univariate probit estimates using two national household surveys indicate that on average land grant recipients are more food insecure than comparable non participants recursive bivariate probit estimates suggest that selection bias is not driving this result

south african land policy the legacy of history and current options abstract the highly dualistic farm structure of south africa and the low productivity of native african farmers have been the result of systematic distortions in land allocation output markets the provision of infrastructure agricultural credit and services the dualistic structure did not emerge because of genuine economies of scale in the large commercial sector other countries in latin america and africa that once supported a dualistic farm size structure through similar distortions have either implemented large scale land reforms or have experienced decades of peasant revolts and civil war the paper compares these international experiences to south africa and outlines judicial and market assisted approaches to south african land reform

peasants against private property rights a review of the literature land is the main if not the only asset for a majority of people in developing countries the definition and allocation of rights over land are thus naturally essential aspects of individuals daily lives as well as critical determinants of social and economic development the privatization of land rights has long been seen as a necessary process enhancing both efficiency and equity however privatized land rights have not always emerged endogenously while exogenously driven programs of land privatization have not always been successful nor popular this has raised questions about the expected benefits of land rights privatization this paper aims at summarizing the main arguments and studies both theoretical and empirical on this issue with a specific focus on the factors that can make privatization inefficient or detrimental for the most concerned individuals

effects of public policy on child labor current knowledge gaps and implications for program design many policy instruments can be used to address or affect child labor even if they are implemented to achieve other objectives from a theoretical point of view however the impact of these policies on child labor is undetermined this paper discusses the evidence generated by rigorous evaluations on the impact on child labor of labor market programs conditional and unconditional transfers and microcredit among other social programs and interventions the study finds that although transfer programs generally tend to reduce child labor other policies risk increasing child labor especially if they affect households productive opportunities the findings also point to knowledge gaps that should be addressed in future evaluations while progress has been made over the past decade there is still much to learn about the effects of public policy on the labor participation of many children in developing countries

the place of agricultural research in the development of sub saharan africa abstract outside sub saharan africa ssa agricultural research ar yields excellent returns why does ssa get so little from its major ar effort why do its ar scientists cost more yet produce less smallness of countries and research stations dispersion and high turnover make it hard to attain a critical mass of national ar scientists to remedy this they could concentrate on a few problems and crops yet they have neglected many of the most important e g cassava and overstressed export crops in other ways too european biases have distorted african ar socioeconomists moreover have entered research design too little and too late above all current domestic funds have been too scanty and unreliable to adequately support international and capital account ar efforts this lack of steady commitment illustrates ar s need for direction from clearer agricultural policy based on radically improved information and recognizing ssa s dramatic rise in labor land ratios guidelines for such policy are indicated within these a formalized and poverty oriented ar design system is suggested

on price risk and the inverse farm size productivity relationship abstract the oft observed inverse relationship between farm size and productivity has elicited several explanations having important policy and theoretical implications using advances in the analysis of price risk effects on producer behavior and a simple two period model of an agricultural household that both produces and consumes under price uncertainty at the time labor allocation decisions are made this paper demonstrates analytically that a non degenerate land distribution and price risk can together produce an inverse relationship even absent any of the more common explanations empirical evidence from madagascar confirms the plausibility of this intuitive explanation for the phenomenon

poverty livelihood and class in rural south africa abstract using data from a national living standards survey undertaken in late 1993 this paper disaggregates and explores the economics of livelihood generation and class in rural south africa in an effort to contribute to the ongoing and vociferous debate in south africa about poverty and its alleviation pursuant to the suggestion of participants in a recent participatory poverty assessment this paper analyzes what might be termed the class structure of poverty after exploring the range of claiming systems and livelihood tactics available in rural south africa the paper offers a first look at who the poor are by disaggregating the rural population into discrete livelihood strategy classes non parametric regression methods are used to then estimate and graphically explore the nature of the livelihood mapping between endowments and real incomes in addition to identifying those endowment combinations that map to consumption levels below the poverty line the asset basis of poverty the topography of the estimated livelihood mapping helps identify the constraints that limit household s ability to effectively utilize their assets and endowments these results suggest that poverty is a matter of not only having few assets but also of constraints which limit the effectiveness with which those assets are used and poverty and livelihood policy needs to be designed accordingly

segmentation in rural financial markets the case of nepal abstract based on a farm household survey in nepal this study found that farm size and irrigation are major determinants of borrowing from formal institutions whereas family size is the most decisive factor in borrowing from informal sources formal sector borrowing per hectare of cultivated area however initially increases and then decreases with farm size our analysis indicates that while very small farmers tend to be excluded from the formal financial market because of a lack of collateral very large farmers choose to borrow less from that source because of lower production efficiency

market imperfections liquidity and farm household labor allocation the case of rural south africa asset endowments and market imperfections shape households labor allocation decisions and lead to different production regimes within rural farm households in south africa this article uses a farm household model to explain the presence of three main household groups determined on the basis of the labor regime adopted small peasants working both on and off farm self cultivators autarkic in labor and hiring in households a partial generalized ordered logit is used to test the main predictions of the model and a brant test on threshold constancy is performed to identify the household specific factors affecting labor market participation the results show that liquidity constraints and market imperfections matter in the choice of the labor strategy adopted liquidity constrained households are more likely to sell labor off farm while access to information facilitates the hiring in of workers

a century long perspective on agricultural development this article strategically surveys the past century s literature on agricultural development we organize the discussion around three grand themes that reveal the richness of agricultural development as an intellectual endeavor first we explore the role of agriculture in the broader development process from a macroeconomic and political economy perspective we then examine the role of technological and institutional change in successful agricultural development finally the focus turns to a microeconomic perspective on agricultural household decision making and the problems of imperfect and missing markets asymmetric information and transactions costs that lead to widespread apparent inefficiency and disequilibrium

productivity credit risk and the demand for weather index insurance in smallholder agriculture in ethiopia the article explores the relationship between fertilizer use and the demand for weather index insurance wii among smallholder farmers in ethiopia we examine whether fertilizer use is profitable under current smallholder production conditions whether risk related factors affect fertilizer use and we estimate the returns to inputs in the agricultural production function in the absence of insurance we then study how these primitives of agricultural production functions relate to insurance demand the study compares a survey based estimate of willingness to pay with actual uptake for the weather insurance finding the stated and actual demand to be almost completely uncorrelated while those with high marginal returns to inputs say they would purchase insurance only those with low marginal returns actually do consistent with the stated purpose of the product as input insurance insurance demand proves to be highly responsive to the existence and amount of randomly allocated insurance vouchers jel classifications c83 g22 q12

poverty and land redistribution abstract despite a theoretical literature that promises that land transfers will have large impacts on the well being of poor households well identified empirical evidence on the efficacy of land redistribution is scarce in an effort to fill this gap this paper examines south africa s land redistribution for agricultural development lrad program we exploit features of lrad program implementation to extract exogenous variation in whether and for how long applicant households enjoyed land transfers binary treatment estimates which compare treated with untreated households show that beneficiary households on average experienced a 25 increase in per capita consumption our preferred continuous treatment estimates which analyze only the subset of treated households identify the impact time path of land transfers on consumption these estimates show that living standards initially drop and then after 3 4 years rise to 150 of their pre transfer level these results are statistically significant and robust to a statistically more conservative identification strategy

demand for differentiated products discrete choice models and the characteristics approach we propose a specific characteristics framework in order to construct linkages between alternative conceptual approaches to modelling product differentiation first it is shown that a demand system which satisfies the gross substitutes property imposes specific requirements on the locations of products in particular the dimension of the characteristics space must be larger than or equal to the number of products minus one we then identify a method for casting a given demand system subject to certain restrictions into our characteristics framework this is illustrated for the logit probit and linear probability models of discrete choice theory finally we find a characteristics representation of the ces representative consumer

accounting for the effect of health on economic growth i use microeconomic estimates of the effect of health on individual outcomes to construct macroeconomic estimates of the proximate effect of health on gdp per capita i employ a variety of methods to construct estimates of the return to health which i combine with cross country and historical data on height adult survival rates and age at menarche using my preferred estimate eliminating health differences among countries would reduce the variance of log gdp per worker by 9 9 percent and reduce the ratio of gdp per worker at the 90th percentile to gdp per worker at the loth percentile from 20 5 to 17 9 while this effect is economically significant it is also substantially smaller than estimates of the effect of health on economic growth that are derived from cross country regressions

can unobserved land quality explain the inverse productivity relationship abstract an inverse relationship between both farm productivity and labor intensity and farm size is a common empirical finding in developing country agriculture the traditional explanation has been imperfect labor markets recently it has been suggested instead that the inverse relationship is a statistical artifact resulting from omitted land quality using a farm level data set from java i investigate whether omitted variable bias can explain the inverse relationship i show that the inverse relationship and accompanying wage responses are inconsistent with a model of neoclassical farm behavior that ignores omitted variable bias instrumental variables techniques yield parameter estimates in which the inverse relationship is eliminated and the estimated wage elasticities are more in line with economic theory further econometric investigation hints that a model of omitted land quality may be a possible source of the inverse relationship these results emphasize the importance of considering the sources of cross sectional variation in estimating microeconomic relationships