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The paper reviews recent theory and empirical evidence testing unitary versus collective models of the household. In contrast to the unitary model, the collective model posits that individuals within households have different preferences and do not pool their income. Moreover, the collective model predicts that intrahousehold allocations reflect differences in preferences and "bargaining power" of individuals within the household. Using new household data sets from Bangladesh, Indonesia, Ethiopia, and South Africa, we present measures of individual characteristics that are highly correlated with bargaining power, namely human capital and individually-controlled assets, evaluated at the time of marriage. In all country case studies we reject the unitary model as a description of household behavior, but to different degrees. Results suggest that assets controlled by women have a positive and significant effect on expenditure allocations toward the next generation, such as education and children's clothing. We also examine individual-level education outcomes and find that parents do not have identical preferences toward sons and daughters within or across countries.

We examine the impact of ambiguous and contested land rights on investment and productivity in agriculture in Akwapim, Ghana. We show that individuals who hold powerful positions in a local political hierarchy have more secure tenure rights, and that as a consequence they invest more in land fertility and have substantially higher output. The intensity of investments on di¤erent plots cultivated by a given individual correspond to that individual’s security of tenure over those speci…c plots and, in turn, to the individual’s position in the political hierarchy relevant to those speci…c plots.

... this paper will explore how prime-age adult mortality impacts the time allocation of surviving household members and the portfolio of household farming activities. Analysis of farm and chore hours across demographic groups generally found small and insignificant changes in labor supply of individuals in households experiencing a prime-age adult death. While some farm activities are temporarily scaled back and wage employment falls after a male death, households did not shift cultivation towards subsistence food farming and did not appear to have reduced their diversification over income sources more than six months after a death

This article investigates the economic efficiency of farm households, with an application to The Gambia. The efficiency analysis is conducted not at the farm level but at the household level, thus capturing the importance of off-farm activities. Output-based measures of technical, allocative, and scale efficiency are generated using nonparametric measurements. An econometric analysis of factors affecting the efficiency indexes is then conducted using a Tobit model. Technical efficiency is fairly high indicating that access to technology is not a severe constraint for most farm households. The cost of scale inefficiency is modest. Allocative inefficiency by contrast is found to be important for the majority of farm households. On the basis of the Tobit results, imperfections in markets for financial capital and nonfarm employment contribute to significant allocative inefficiency.

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This paper investigates whether human capital affects the productivity and labor allocation of rural households in four districts of Pakistan. The investigation shows that households with better-educated males earn higher off-farm income and divert labor resources away from farm activities toward nonfarm work. Education has no significant effect on productivity in crop and livestock production. The effect of human capital on household incomes is partly realized through the reallocation of labor from lowproductivity activities to nonfarm work. Female education and nutrition do not affect productivity and labor allocation in any systematic fashion, a finding that is consistent with the marginal role women play in market-oriented activities in Pakistan. As a by-product, our estimation approach also tests the existence of perfect labor and factor markets; the hypothesis that such markets exist is strongly rejected. CONTENTS Acknowledgments ..................................................

Using detailed data from rural Pakistan, this paper investigates whether human capital, learning by doing, gender, and family status affect the division of labor within households. Results suggest the presence of returns to individual specialization in all farm, non-farm, and home based activities. The intrahousehold division of labor is influenced by comparative advantage based on human capital and by long-lasting returns to learning by doing, but we also find evidence of a separate effect of gender and family status. Households seem to operate as hierarchies with sexually segregated spheres of activity. The head of household and his or her spouse provide most of the labor within their respective spheres of influence; other members work less. When present in the household, daughters-in-law work systematically harder than daughters of comparable age, build, and education. Other findings of interest are that there are increasing returns to scale in most household chores, that larger households work more off farm, and that better educated individuals enjoy more leisure. JEL Codes: O1, J2 ________________ + Department of Economics, University of Oxford, St Cross Bldg., Manor Rd., Oxford, OX1 3UQ, (United Kingdom). Tel: + 44 (0)1865 281446. Fax: + 44 (0)1865 281447. economics.ox.ac.uk. ++ International Food Policy Research Institute, 2033 K Street N.W., Washington DC 20006. Tel.: (202) 862-5650. cgiar.org.

ABSTRACT On farm conservation of crop diversity entails policy challenges, especially when the diversity of crops maintained on farms has both inter-specific (among crops) and infra-specific (within a crop) components. Survey data is used to compare the determinants of inter-and infra-specific diversity on household farms in the highlands of northern Ethiopia. Physical features of the farm, and household characteristics such as livestock assets and the proportion of adults that are men, have large and significant effects on both the diversity among and within cereal crops grown, varying among crops. Demographic aspects such as age of household head and adult education levels affect only infra-specific diversity of cereals. Though there are no apparent trade-offs between policies that would enhance one type of diversity (richness) versus another (evenness), those designed to encourage infra-specific diversity in one cereal crop might have the opposite effect on another crop. Trade-offs between development and diversity in this resource-poor system are not evident. Market-related variables and population density have ambiguous effects. Education positively influences cereal crop diversity. Growing modern varieties of maize or wheat does not detract from the richness or evenness of these cereals on household farms.

European Union (EU) retailers are setting global benchmarks for the production of fresh food, and are asking their suppliers for produce to be certified according to food safety and quality standards. Compliance to these standards for developing countries small-scale producers entail costly investment in variable inputs and long term structures. Limited empirical evidence exists either to refute or confirm the concern that the proliferation and enhanced stringency of these standards marginalize smallholders from global market. This article therefore explores the costs of compliance, factors explaining the smallholder decision to adopt EU private quality standard and the impacts of the standard on farm financial performance. We develop a two-stage standard treatment effect model to account for self-selection as a source of endogeneity. Analysis is based on a random cross section sample of 439 small-scale export vegetable producers in Kenya whose production was monitored in 2005/2006. We demonstrate that adopters and non-adopters are distinguishable by their asset holding and household wealth, access to services, labor endowment and level of education. Once we control for endogeneity problem, we found that small-scale producers can benefit substantially from adopting the standard at the farm