Person:
Lanjouw, Peter Frederik
Author Name Variants
Fields of Specialization
Poverty and Inequality Analysis; Rural Development; Small Area Estimation; Village Studies
Degrees
Departments
Poverty and Inequality Team, Development Economics Research Group, World Bank
Externally Hosted Work
Contact Information
Last updated
January 31, 2023
Biography
Peter Lanjouw, a Dutch national, is Research Manager of the Poverty and Inequality Team in the Development Economics Research Group of the World Bank. He is also an Honorary Fellow of the Amsterdam Institute of International Development, Netherlands. He completed his Ph.D. in economics from the London School of Economics in 1992. From August 2003 until August 2005, he was a visiting scholar at the Agriculture and Resource Economics department at UC Berkeley, and he held the appointment of Professor of Economics at the VU University of Amsterdam between September 1998 and May 2000. He has taught in the Masters in Development Economics program at the University of Namur, Belgium and has also taught at the Foundation for the Advanced Study of International Development in Tokyo, Japan. His research focuses on various aspects of poverty and inequality measurement as well as on rural development issues.
Publication Search Results
1 - 10 of 15
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Publication
Vietnam's Evolving Poverty Map : Patterns and Implications for Policy
(World Bank, Washington, DC, 2013-02)This paper uses small area estimation techniques to update Vietnam's province and district-level poverty map to 2009. It finds that poverty rates continue to be highest in the northern and central mountainous regions, where ethnic minorities make up a large fraction of the population. Poverty has fallen in most provinces and districts over this decade, but the pace of poverty reduction has been least pronounced in those localities with high initial poverty or inequality levels. As a result, poverty rates have become more spatially concentrated over time, which is consistent with widely observed growth processes linked to agglomeration. The authors hypothesize that this makes geographic targeting of the poor more relevant as a means to re-balance growing welfare disparities between geographic areas. Simulations indicate that in both 1999 and 2009, geographic targeting for poverty alleviation improves upon a uniform lump-sum transfer and this becomes more evident the more spatially disaggregated the target populations. The analysis further indicates that the gains from geographic targeting have become more pronounced over time in Vietnam. Although poverty reduction in Vietnam has been impressive, further progress may thus warrant increased attention to geographic targeting. -
Publication
Poverty Alleviation through Geographic Targeting: How Much Does Disaggregation Help?
(World Bank, Washington, D.C., 2004-10)Using recently completed "poverty maps" for Cambodia, Ecuador, and Madagascar, the authors simulate the impact on poverty of transferring an exogenously given budget to geographically defined subgroups of the population according to their relative poverty status. They find large gains from targeting smaller administrative units, such as districts or villages. But these gains are still far from the poverty reduction that would be possible had the planners had access to information on household level income or consumption. The results suggest that a useful way forward might be to combine fine geographic targeting using a poverty map with within-community targeting mechanisms. -
Publication
Poverty, Education, and Health in Indonesia : Who Benefits from Public Spending?
(World Bank, Washington, DC, 2001-12)The authors investigate the extent to which Indonesia's poor benefit from public and private provisioning of education and health services. Drawing on multiple rounds of SUSENAS household surveys, they document a reversal in the rate of decline in poverty and a slowdown in social sector improvements resulting from the economic crisis in the second half of the 1990s. Carrying out traditional static benefit-incidence analysis of public spending in education and health, the authors find patterns consistent with experience in other countries: spending on primary education and primary health care tends to be pro-poor, while spending on higher education and hospitals is less obviously beneficial to the poor. These conclusions are tempered once one allows for economies of scale in consumption which weaken the link between poverty status and household size. The authors also examine the incidence of changes in government spending. They find that the marginal incidence of spending in both junior and senior secondary schooling is more progressive than what static analysis would suggest, consistent with "early capture" by the non-poor of education spending. In the health sector marginal and average incidence analysis point to the same conclusion: the greatest benefit to the poor would come from an increase in primary health care spending. -
Publication
Simulating the Impact of Geographic Targeting on Poverty Alleviation in Morocco : What Are the Gains from Disaggregation?
(World Bank, Washington, DC, 2008-09)The authors employ the recently completed "poverty map" for Morocco, referring to the year 2004, as a tool for an ex-ante evaluation of the distributional incidence of geographic targeting of public resources. They simulate the impact on poverty of transferring an exogenously given budget to geographically defined sub-groups of the population according to their relative poverty status. In both rural and urban areas, the findings reveal large gains from targeting smaller administrative units, such as communes or districts. However, these gains are still far from the poverty reduction that would be possible had the planners had access to information on household level income or consumption. The results indicate that a useful way forward might be to combine fine geographic targeting using a poverty map with within-community targeting mechanisms. -
Publication
How Good a Map? Putting Small Area Estimation to the Test
(World Bank, Washington, DC, 2007-03)The authors examine the performance of small area welfare estimation. The method combines census and survey data to produce spatially disaggregated poverty and inequality estimates. To test the method, they compare predicted welfare indicators for a set of target populations with their true values. They construct target populations using actual data from a census of households in a set of rural Mexican communities. They examine estimates along three criteria: accuracy of confidence intervals, bias, and correlation with true values. The authors find that while point estimates are very stable, the precision of the estimates varies with alternative simulation methods. While the original approach of numerical gradient estimation yields standard errors that seem appropriate, some computationally less-intensive simulation procedures yield confidence intervals that are slightly too narrow. The precision of estimates is shown to diminish markedly if unobserved location effects at the village level are not well captured in underlying consumption models. With well specified models there is only slight evidence of bias, but the authors show that bias increases if underlying models fail to capture latent location effects. Correlations between estimated and true welfare at the local level are highest for mean expenditure and poverty measures and lower for inequality measures. -
Publication
Local Inequality and Project Choice: Theory and Evidence from Ecuador
(World Bank, Washington, DC, 2006-08)This paper provides evidence consistent with elite capture of Social Fund investment projects in Ecuador. Exploiting a unique combination of data-sets on village-level income distributions, Social Fund project administration, and province level electoral results, the authors test a simple model of project choice when local political power is unequally distributed. In accordance with the predictions of the model, poorer villages are more likely to receive projects that provide excludable (private) goods to the poor, such as latrines. Controlling for poverty, more unequal communities are less likely to receive such projects. Consistent with the hypothesis of elite capture, these results are sensitive to the specific measure of inequality used in the empirical analysis, and are strongest for expenditure shares at the top of the distribution. -
Publication
Re-Interpreting Sub-Group Inequality Decompositions
(World Bank, Washington, DC, 2005-08)The authors propose a modification to the conventional approach of decomposing income inequality by population sub-groups. Specifically, they propose a measure that evaluates observed between-group inequality against a benchmark of maximum between-group inequality that can be attained when the number and relative sizes of groups under examination are fixed. The authors argue that such a modification can provide a complementary perspective on the question of whether a particular population breakdown is salient to an assessment of inequality in a country. As their measure normalizes between-group inequality by the number and relative sizes of groups, it is also less subject to problems of comparability across different settings. The authors show that for a large set of countries their assessment of the importance of group differences typically increases substantially on the basis of this approach. The ranking of countries (or different population groups) can also differ from that obtained using traditional decomposition methods. Finally, they observe an interesting pattern of higher levels of overall inequality in countries where their measure finds higher between-group contributions. -
Publication
Brazil's Bolsa Escola Program : The Role of Local Governance in Decentralized Implementation
(World Bank, Washington, DC, 2005-12)This study analyzes the role of local governance in the implementation of Bolsa Escola, a decentralized conditional cash transfer program for child education in Brazil. It is based on a survey of 260 municipalities in four states of the Northeast. The analysis focuses on program implementation. Results show that there was considerable confusion over the municipality s role in beneficiary selection and consequently much heterogeneity in implementation across municipalities. Social control councils as direct accountability mechanisms were often not in place and poorly informed, weakening their role. However, electoral support for incumbent mayors rewarded larger program coverage, presence of councils, and low leakages of benefits to the non-poor. -
Publication
Non-Farm Diversification, Poverty, Economic Mobility and Income Inequality : A Case Study in Village India
(World Bank, Washington, DC, 2013-05)This paper assembles data at the all-India level and for the village of Palanpur, Uttar Pradesh, to document the growing importance, and influence, of the non-farm sector in the rural economy between the early 1980s and late 2000s. The suggestion from the combined National Sample Survey and Palanpur data is of a slow process of non-farm diversification, whose distributional incidence, on the margin, is increasingly pro-poor. The village-level analysis documents that the non-farm sector is not only increasing incomes and reducing poverty, but appears as well to be breaking down long-standing barriers to mobility among the poorest segments of rural society. Efforts by the government of India to accelerate the process of diversification could thus yield significant returns in terms of declining poverty and increased income mobility. The evidence from Palanpur also shows, however, that at the village-level a significant increase in income inequality has accompanied diversification away from the farm. A growing literature argues that such a rise in inequality could affect the fabric of village society, the way in which village institutions function and evolve, and the scope for collective action at the village level. Failure to keep such inequalities in check could thus undermine the pro-poor impacts from the process of structural transformation currently underway in rural India. -
Publication
Using Disaggregated Poverty Maps to Plan Sectoral Investments
(World Bank, Washington, DC, 1998-05)This poverty note analyzes the usefulness of poverty maps, and how they can be constructed using census and survey data, for the use and benefit of policy makers to focus scarce development resources. The note goes on to describe various kinds of poverty maps, such as those based on indexes of welfare, basic needs indicators, and disaggregated consumption-based factors. Methodologies to create these maps, are further discussed at some length.