Varun Gauri is Senior Economist in the Development Research Group of the World Bank. His research focuses on politics and governance in the social sectors and aims to combine quantitative and qualitative methods in economics and social science research. His research has addressed HIV/AIDS policies in Brazil, South Africa, and Mozambique; basic immunization in Pakistan; the behavior of development nongovernmental organizations (NGOs) in Bangladesh; payment modalities for health-care providers in Costa Rica and Nigeria; litigation for social and economic rights in developing countries; and the r...