When does rigorous impact evaluation make a difference ? the case of the millennium villages
AbstractWhen is the rigorous impact evaluation of development projects a luxury, and when a necessity? This Paper studies one high-profile case: the Millennium Villages Project (MVP), an experimental and intensive package intervention to spark sustained local economic development in rural Africa. it illustrates the benefits of rigorous impact evaluation in this setting by showing that estimates of the project's effects depend heavily on the evaluation method. Comparing trends at the MVP intervention sites in Kenya, Ghana, and Nigeria to trends in the surrounding areas yields much more modest estimates of the project's effects than the before-versus-after comparisons published thus far by the MVP. Neither approach constitutes a rigorous impact evaluation of the MVP, which is impossible to perform due to weaknesses in the evaluation design of the project's initial phase. These weaknesses include the subjective choice of intervention sites, the subjective choice of comparison sites, the lack of baseline data on comparison sites, the small sample size, and the short time horizon. The authors describe how the next wave of the intervention could be designed to allow proper evaluation of the MVP's impact at little additional cost.
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Bibliographic InfoPaper provided by The World Bank in its series Policy Research Working Paper Series with number 5477.
Date of creation: 01 Nov 2010
Date of revision:
Housing&Human Habitats; Poverty Monitoring&Analysis; Science Education; Scientific Research&Science Parks; Population Policies;
Other versions of this item:
- Michael A. Clemens & Gabriel Demombynes, 2011. "When does rigorous impact evaluation make a difference? The case of the Millennium Villages," The Journal of Development Effectiveness, Taylor and Francis Journals, vol. 3(3), pages 305-339, September.
- NEP-AFR-2010-11-27 (Africa)
- NEP-ALL-2010-11-27 (All new papers)
- NEP-DEV-2010-11-27 (Development)
- NEP-PPM-2010-11-27 (Project, Program & Portfolio Management)
- NEP-TUR-2010-11-27 (Tourism Economics)
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
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Blog mentionsAs found by EconAcademics.org, the blog aggregator for Economics research:
- Chapter II : Is Jeffrey Sachs in a highway to hell?
by Dany Jaimovich - Bakary Baludin in Development Therapy on 2012-05-11 08:40:00
- Maria Carmela Lo Bue & Stephan Klasen, 2012.
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- Maria Lo Bue & Stephan Klasen, 2013. "Identifying Synergies and Complementarities Between MDGs: Results from Cluster Analysis," Social Indicators Research, Springer, vol. 113(2), pages 647-670, September.
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