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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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– A Harbinger of Political Change?
South Africa has seen a significant increase in the size of the black middle class in the post-apartheid period, but the attitudinal consequences of indicators of the middle class, as of 2011, are inconsistent and modest in size. While members of the middle class are no more likely to hold...
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– Implications for Food System Transformation
We examine the implications of the rise of a middle class in East and Southern Africa for food consumption patterns and the food system. A unique classification of food items shows that highly processed food has one-third of the purchased food market, with comparable shares in rural and urban areas...
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– The Middle Class, Private Sector and Economic Outcomes in Africa
Political scientists have generally seen two key features of African political economies—a relatively small or absent middle class, and a middle class that is unusually embedded in the state—as key explanations of the troubled political and economic trajectories of many African societies. This paper...
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– Evidence from Kenya
Barrington Moore’s famous line ‘no bourgeoisie, no democracy’ is one of the most quoted claims in political science. But has the rise of the African middle class promoted democratic consolidation? This paper uses the case of Kenya to investigate the attitudes and behaviours of the middle class...
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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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