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Registros recuperados: 75
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EXOGENOUS PRODUCTION SHOCKS AND TECHNICAL EFFICIENCY AMONG TRADITIONAL IVORIEN RICE FARMERS AgEcon
Sherlund, Shane M.; Barrett, Christopher B..
This paper uses a unique panel data set and data envelopment analysis (DEA) to obtain estimates of technical efficiency for 492 traditional rice plots in Côte d'Ivoire. The objective of this paper is to explore the importance of explicitly controlling for exogenous shocks to production in technical efficiency estimation. We show how omission of such variables in highly stochastic production environments can lead to serious inferential errors, with potentially significant policy implications. Conventional DEA estimation of a production frontier, followed by second-stage Tobit estimation of the correlates of plot- level technical efficiency, suggest widespread and substantial inefficiency related to crop fragmentation and seed varieties. However, when...
Tipo: Conference Paper or Presentation Palavras-chave: Africa (Sub-Saharan); Ivory Coast; Production frontiers; Agricultural productivity; Rice.; Crop Production/Industries; Productivity Analysis; O12; Q12; D2.
Ano: 1998 URL: http://purl.umn.edu/20945
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AN ASSET-RISK MODEL OF REVERSE TENANCY AgEcon
Bellemare, Marc F.; Barrett, Christopher B..
Reverse tenancy, wherein poorer landlords rent out land to richer tenants on shares, is a common phenomenon. Yet, it does not fit existing theoretical models of sharecropping and has never before been modeled in the development microeconomics literature. We explain reverse tenancy contracts using an asset risk model that incorporates moral hazard. When choosing the terms of an agrarian contract, the landlord considers the impact of her choice on the probability that she will retain future rights to the rented land. Thus, this model captures the effect of tenure insecurity and property rights on agrarian contracts. The main testable implication of the theoretical model is that, as property rights become more secure, reverse tenancy tends to disappear.
Tipo: Conference Paper or Presentation Palavras-chave: Risk and Uncertainty.
Ano: 2003 URL: http://purl.umn.edu/22132
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U.S. Food Aid and Agricultural Cargo Preference Policy AgEcon
Bageant, Elizabeth R.; Barrett, Christopher B.; Lentz, Erin C..
Replaced with revised version of paper 07/20/10.
Tipo: Conference Paper or Presentation Palavras-chave: Food Aid Policy; Cargo Preference; Agricultural and Food Policy; Food Security and Poverty.
Ano: 2010 URL: http://purl.umn.edu/61250
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BAYES' ESTIMATES OF THE DOUBLE HURDLE MODEL IN THE PRESENCE OF FIXED COSTS AgEcon
Holloway, Garth J.; Barrett, Christopher B.; Ehui, Simeon K..
We present a model of market adoption (participation) where the presence of non-negligible fixed costs leads to non-zero censoring of the traditional double-hurdle regression. Fixed costs arise due to household resources that must be devoted a priori to the decision to participate in the market. These costs-usually a cost of time-motivate two-step decision-making and focus attentions on the minimum-efficient scale of operations (the minimum amount of milk sales) at which market entry becomes viable. This focus, in turn, motivates a non-zero-censored Tobit regression estimated through routine application of Markov chain Monte Carlo Methods.
Tipo: Working or Discussion Paper Palavras-chave: Market participation; Fixed costs; Double-hurdle model; Censored regression.; Financial Economics; O1; O11; C34; O13; Q16; D1.
Ano: 2002 URL: http://purl.umn.edu/14741
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Informal Insurance in the Presence of Poverty Traps: Evidence from Southern Ethiopia AgEcon
Santos, Paulo; Barrett, Christopher B..
Fieldwork for this paper was conducted under the Pastoral Risk Management (PARIMA) project of the Global Livestock Collaborative Research Support Program (GL CRSP), funded by the Office of Agriculture and Food Security, Global Bureau, USAID, under grant number DAN-1328-G-00-0046-00, and analysis was underwritten by the USAID SAGA cooperative agreement, grant number HFM-A-00-01-00132-00. Financial support was also provided by the Social Science Research Council's Program in Applied Economics on Risk and Development (through a grant from the John D. and Catherine T. MacArthur Foundation), The Pew Charitable Trusts (through the Christian Scholars Program of the University of Notre Dame), the Fundação para a Ciência e Tecnologia (Portugal), and the Graduate...
Tipo: Conference Paper or Presentation Palavras-chave: Risk; Informal insurance; Social networks; Poverty traps; Ethiopia; Risk and Uncertainty; Z13; I3; O13.
Ano: 2006 URL: http://purl.umn.edu/25487
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THE COMPLEX DYNAMICS OF SMALLHOLDER TECHNOLOGY ADOPTION: THE CASE OF SRI IN MADAGASCAR AgEcon
Moser, Christine M.; Barrett, Christopher B..
This paper explores the dynamics of smallholder technology adoption, with particular reference to a high-yielding, low-external input rice production method in Madagascar. We present a simple model of technology adoption by farm households in an environment of incomplete financial and land markets. We then use a probit model and a symmetrically trimmed least squares estimation of a dynamic Tobit model to analyze the decisions to adopt, expand and disadopt the method. We find that seasonal liquidity constraints discourage adoption by poorer farmers. Learning effects – both from extension agents and from other farmers– exert significant influence over adoption decisions.
Tipo: Working or Discussion Paper Palavras-chave: Technology adoption; Learning; The System of Rice Intensification; Conformity effects; Farm Management; O0; O1; Q0; Q16; Q12; Q18.
Ano: 2003 URL: http://purl.umn.edu/14735
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Does Resource Commercialization Induce Local Conservation? A Cautionary Tale From Southwestern Morocco AgEcon
Lybbert, Travis J.; Barrett, Christopher B.; Narjisse, Hamid.
Ecotourism, bioprospecting and non-timber product marketing have been promoted recently as market-based instruments for environment protection, but without sound understanding of the resulting net conservation effects. We present evidence on the local conservation effects of recent argan oil commercialization in Morocco, which seems a promising case study in conservation through resource commercialization. Our empirical analysis shows, however, that resource commercialization is not creating strong net conservation incentives because assumptions implicit in the prevailing logic prove incorrect in this case. Generally, the experience of southwestern Morocco provides a cautionary tale about the assumed efficacy of conservation strategies founded on resource...
Tipo: Conference Paper or Presentation Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2001 URL: http://purl.umn.edu/36085
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Better Technology, Better Plots or Better Farmers? Identifying Changes in Productivity and Risk Among Malagasy Rice Farmers AgEcon
Barrett, Christopher B.; Moser, Christine M..
In assessing the productivity gains of a new technology, it is often difficult to determine the extent to which observed output gains are due to the technology itself, rather than to the skill of the farmer or the quality of the plot on which the new technology is tried. This problem of attribution is especially important when technologies are not embodied in purchased inputs such as seed or machinery but result instead from changed farmer cultivation practices. Using data based on observations of farmers in Madagascar who simultaneously practice both a newly introduced and traditional rice production methods, we introduce a method for properly attributing observed productivity and risk changes among new production methods, farmers and plots by...
Tipo: Conference Paper or Presentation Palavras-chave: Productivity Analysis.
Ano: 2003 URL: http://purl.umn.edu/22251
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DECOMPOSING PRODUCER PRICE RISK: AN ANALYSIS OF LIVESTOCK MARKETS IN NORTHERN KENYA AgEcon
Barrett, Christopher B.; Luseno, Winnie K..
This paper introduces a simple method of price risk decomposition that determines the extent to which producer price risk is attributable to volatile inter-market margins, intra-day variation, intra-week (day of week) variation, or seasonality. We apply the method to livestock markets in northern Kenya, a setting of dramatic price volatility where price stabilization is a live policy issue. Large, variable inter-market basis is the single most important factor in explaining producer price risk in animals typically traded between markets. Local market conditions explain most price risk in other markets, in which traded animals rarely exit the region. Seasonality accounts for relatively little price risk faced by pastoralists in the dry lands of northern...
Tipo: Conference Paper or Presentation Palavras-chave: Livestock Production/Industries; Risk and Uncertainty.
Ano: 2001 URL: http://purl.umn.edu/36154
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BAYESIAN HERDERS: ASYMMETRIC UPDATING OF RAINFALL BELIEFS IN RESPONSE TO EXTERNAL FORECASTS AgEcon
Lybbert, Travis J.; Barrett, Christopher B.; McPeak, John G.; Luseno, Winnie K..
Temporal climate risk weighs heavily on many of the world's poor. Recent advances in model-based climate forecasting have expanded the range, timeliness and accuracy of forecasts available to decision-makers whose welfare depends on stochastic climate outcomes. There has consequently been considerable recent investment in improved climate forecasting for the developing world. Yet, in cultures that have long used indigenous climate forecasting methods, forecasts generated and disseminated by outsiders using unfamiliar methods may not readily gain the acceptance necessary to induce behavioral change. The value of model-based climate forecasts depends critically on the premise that forecast recipients actually use external forecast information to update...
Tipo: Working or Discussion Paper Palavras-chave: Agribusiness; O1; D1; Q12.
Ano: 2003 URL: http://purl.umn.edu/14762
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A HOLISTIC APPROACH TO SUSTAINABILITY BASED ON PLURALISTIC STEWARDSHIP AgEcon
Barrett, Christopher B.; Grizzle, Raymond E..
Tipo: Working or Discussion Paper Palavras-chave: Environmental Economics and Policy.
Ano: 1997 URL: http://purl.umn.edu/28367
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THE ECONOMICS OF POVERTY AND THE POVERTY OF ECONOMICS: A CHRISTIAN PERSPECTIVE AgEcon
Barrett, Christopher B..
In this world of plenty, almost half of the world's six billion people live on two dollars a day or less and the number living on less than one dollar a day has increased over the past fifteen years (World Bank 2000). Between one third and one half suffer under nutrition due to insufficient intake of calories, protein or critical micronutrients such as vitamin A, iodine and iron. More than one child in five lives in acute poverty. Why does such unnecessary injustice continue to disfigure a rich, technologically advanced world and what can be done to care for the poor and thereby to care for and honor God, as the Gospels instruct us? In attempting to answer those questions, at least partly, this paper offers some insights from recent research in economics,...
Tipo: Working or Discussion Paper Palavras-chave: Food Security and Poverty; O1; I1; A1.
Ano: 2003 URL: http://purl.umn.edu/14747
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ASSET, ACTIVITY, AND INCOME DIVERSIFICATION AMONG AFRICAN AGRICULTURALISTS: SOME PRACTICAL ISSUES AgEcon
Barrett, Christopher B.; Reardon, Thomas.
This paper starts from the premise that diversification of assets, activities, and incomes is important to African rural households, in that diversification into nonfarm income constitutes on average about 45 percent of incomes, and the push and pull factors driving that diversification are bound to persist. From that premise, we noted that the empirical study of diversification has been beset by practical problems and issues relating to (1) definitions and concepts, (2) data collection, and to (3) measurement of the nature and extent of diversification. The paper addressed each of those problems. Two points are of special interest to the overall conceptualization of diversification research. The first is that empirical studies have exhibited a wide...
Tipo: Working or Discussion Paper Palavras-chave: Agribusiness; O; Q12.
Ano: 2000 URL: http://purl.umn.edu/14734
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Perceptions of Risk within Pastoralist Households in Northern Kenya and Southern Ethiopia AgEcon
Doss, Cheryl R.; McPeak, John G.; Barrett, Christopher B..
Perceptions of risk may vary within households as well as across households and communities. In this paper, we take advantage of panel survey data collected quarterly over a period of 2 ½ years to see how perceptions of risk vary across individuals over time. The surveyed households are in pastoralist communities in Northern Kenya and Southern Ethiopia and the survey period coincides with a severe drought in this region and the beginning of the recovery. We identify the structural heterogeneity of the perceptions of risk of these individuals. Because of the nature of panel data, we can also test how the perceptions of risk are affected by shocks in previous periods. In particular, we ask how an individual's risk perceptions change when shocks happen to...
Tipo: Conference Paper or Presentation Palavras-chave: Risk and Uncertainty.
Ano: 2005 URL: http://purl.umn.edu/19504
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THE IMPACTS OF AGRICULTURAL LIBERALIZATION ON COMMODITY PRICE DISTRIBUTIONS: EVIDENCE FROM MADAGASCAR AgEcon
Barrett, Christopher B..
Tipo: Working or Discussion Paper Palavras-chave: Demand and Price Analysis.
Ano: 1994 URL: http://purl.umn.edu/12669
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U.S. Food Aid: It’s Not Your Parents’ Program Any More! AgEcon
Barrett, Christopher B..
Much has changed in the 50 years since modern food aid began with the enactment of U.S. Public Law 480 in 1954. Yet contemporary policy debates often become derailed by failures to appreciate the significant changes that have already occurred. This paper identifies the most important of these changes and explains how these set the stage for further desirable changes to U.S. food aid programs.
Tipo: Journal Article Palavras-chave: Food security; Humanitarian assistance; Hunger; Poverty; Safety nets; Surplus disposal; Trade promotion; Agricultural and Food Policy; Food Security and Poverty; International Relations/Trade.
Ano: 2006 URL: http://purl.umn.edu/57696
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ARE AGRICULTURAL EXPERIMENT STATION FACULTY SALARIES COMPETITIVELY OR MONOPSONISTICALLY DETERMINED? AgEcon
Barrett, Christopher B.; Bailey, DeeVon.
Tipo: Working or Discussion Paper Palavras-chave: Labor and Human Capital; Teaching/Communication/Extension/Profession.
Ano: 1998 URL: http://purl.umn.edu/28370
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Household-Level Livestock Marketing Behavior Among Northern Kenyan and Southern Ethiopian Pastoralists AgEcon
Bellemare, Marc F.; Barrett, Christopher B.; Osterloh, Sharon M..
Pastoralists in East Africa's arid and semi-arid lands (ASAL) regularly confront climatic shocks triggering massive herd die-offs and loss of scarce wealth. On the surface, it appears puzzling that pastoralists do not make extensive use of livestock markets to offload animals when climatic shocks temporarily reduce the carrying capacity of local rangelands, and then use markets to restock their herds when local conditions recover. In recent years, donors and policy makers have begun to hypothesize that investments in livestock marketing systems might quickly pay for themselves through reduced demand for relief aid,by increasing pastoralist marketing responsiveness to temporal variation in range conditions.
Tipo: Working or Discussion Paper Palavras-chave: Marketing.
Ano: 2005 URL: http://purl.umn.edu/14749
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FOOD AID FOR MARKET DEVELOPMENT IN SUB-SAHARAN AFRICA AgEcon
Abdulai, Awudu; Barrett, Christopher B.; Hazell, Peter B.R..
Food aid remains significant for food availability in many low-income countries in sub-Saharan Africa, helping to reduce the gap between food consumption needs and supply from domestic production and inventories and commercial imports. Food aid remains a contentious subject, however, and there have been many recent pleas for more effective use of the resource. This study explores how food aid might be used for domestic food market development to facilitate poverty alleviation and economic growth. There are obvious risks to using food aid for market development, just as there have been in using food aid to try to stimulate agricultural development. Because food aid necessarily expands local food supply, it needs to be well targeted if adverse producer price...
Tipo: Working or Discussion Paper Palavras-chave: Food Security and Poverty; International Relations/Trade.
Ano: 2004 URL: http://purl.umn.edu/16170
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THE ECONOMIC AND ETHICAL AMBIGUITIES OF AFRICAN DEBT FORGIVENESS AgEcon
Barrett, Christopher B..
Tipo: Working or Discussion Paper Palavras-chave: Financial Economics.
Ano: 1996 URL: http://purl.umn.edu/28345
Registros recuperados: 75
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