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Publications (11)
Working Paper
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Social scientists are increasingly engaging in experimental research projects of importance for public policy in developing areas. While this research holds the possibility of producing major social benefits, it may also involve manipulating populations, often without consent, sometimes with...
Working Paper
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– Definitions and Diagrams
The fundamental problem of external validity is not to generalize from one experiment, so much as to experimentally test generalizable theories. That is, theories that explain the systematic variation of causal effects across contexts. Here we show how the graphical language of causal diagrams can...
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In recent years, randomized controlled trials have become increasingly popular in the social sciences. In development economics in particular, their use has attracted considerable debate in relation to the identification of ‘what works’ in development policy. This paper focuses on a core topic in...
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– Opportunities and Challenges
‘Ancillary experiments’ are a new technique whereby researchers use a completed experiment conducted by others to recover causal estimates of a randomized intervention on new outcomes. The method requires pairing new outcome data with randomized treatments the researchers themselves did not oversee...
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– Towards Experiments?
In examining the study of government performance, this paper asks whether field experiments can improve the explanatory precision of results generated by public opinion surveys. Survey research on basic health and education services sub-Saharan Africa shows that the perceived ‘user friendliness’ (or...
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– Experimental and Non-Experimental Methods in Development Economics
This paper provides a survey of six widely used non-experimental methods for estimating the impact of programmes in the context of developing economies (instrumental variables, regression discontinuity, direct matching, propensity score matching, linear regression and non-parametric methods, and...
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– Better Policies? Better Politics?
The paper provides a comparative analysis of the incidence of evaluation methods in antipoverty transfer programmes in Latin America and sub-Saharan Africa. The paper identifies two broad explanations for the incidence of evaluation in antipoverty transfer programmes in developing countries, one...
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In many African countries, decentralization has long been viewed as a means for improving local service delivery. Yet, despite various decentralization initiatives, poor service delivery continues to be problematic in two of Kenya’s largest cities, Nairobi and Mombasa. Despite various governance...
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– Does Politics Matter?
This study examines the role of politics on decentralization and service delivery in South Africa, with a specific focus on Johannesburg and Cape Town. The research delineates how national decentralization has affected service delivery responsibilities and resources, determines whether service...
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Uganda, like other African countries, has implemented reforms to decentralize political authority to local governments and reintroduce multiparty elections. This combination creates opportunities for national partisan struggles to emerge in local arenas and influence local service delivery. This...
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Sub-Saharan African cities have been growing at historically unprecedented rates. Since the early 1970s, they have welcomed international assistance involving a succession of major thematic objectives. The main agency involved in urban assistance has been the World Bank. But as its goals have...
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