Do national borders and ethnicity contribute to market segmentation between and within countries? This paper uses unique and high-frequency data on narrowly-defined goods to gauge the extent to which a national border impedes trade between developing countries (Niger and Nigeria). Using a...

Access to and use of mobile telephony in sub-Saharan Africa has increased dramatically over the past decade. Mobile telephony has brought new possibilities to the continent. Across urban-rural and rich-poor divides, mobile phones connect individuals to individuals, information, markets, and...

How do grain markets respond to extreme rainfall in West Africa? This paper examines the effect of weather on grain market performance in Niger, a country affected by droughts, crop failures and famines since the 1930s. Using a dataset that combines information on rainfall, agricultural...

CGD non-resident fellow Jenny Aker and co-authors report on the results from a randomized evaluation of a mobile phone education program (Project ABC) in Niger, in which adult students learned how to use mobile phones as part of a literacy and numeracy class. Overall, students demonstrated...

Expansion in mobile phone coverage has improved access to information throughout the developing world, particularly within sub-Saharan Africa.  The existing evidence suggests that information technology has improved market efficiency and reduced consumer prices for certain commodities.  There...

African elections often reveal low levels of political accountability. We assess different forms of voter education during an election in Mozambique. Three interventions providing information to voters and calling for their electoral participation were randomized; an SMS-based information...

African elections often reveal low levels of political accountability. We assess different forms of voter education during an election in Mozambique. Three interventions providing information to voters and calling for their electoral participation were randomized; an SMS-based information...