William Jack is an Associate Professor in the Economics Department at Georgetown University, where he is currently the Director of Undergraduate Studies. He is co-founder and co-director of gui2de, the Georgetown University Initiative on Innovation, Development and Evaluation, which conducts empirical field-based research to assess the impact and effectiveness of interventions and policies aimed at empowering individuals in developing countries to improve their lives. Major research themes include governance and accountability, the promotion of agency in the delivery of health, education, and other public services, the role of mobile technology in development, and financial development and integration.