The poor in most parts of the world may have electricity (especially in urban areas), but they rarely have water, sewer, and telephone services. When they gain access to local services, however, many do decide to connect

The authors use the World Bank's Living Standards Measurement Study (LSMS) surveys from 15 countries (covering more than 55,500 households) to examine the relationship between infrastructure coverage and household income. The results show that throughout the world all income groups have much...