Vouchers stimulate demand for health care services by giving beneficiaries purchasing power. In turn, health facilities? claims are reimbursed for providing beneficiaries with improved quality of health care. Efficient strategies to generate demand from new, often poor, users and supply in the...

The paper investigates the effects of short-term political motivations on the effectiveness of foreign aid. Specifically, the paper tests whether the effect of aid on economic growth is reduced by the share of years a country served on the United Nations Security Council (UNSC) in the period the...

This paper examines the correlates of success of development policy lending operations of the World Bank between 2004 and 2012. The paper uses a data set constructed of individual loan characteristics and ex-post loan ratings produced by the World Bank's Independent Evaluation Group. Departing...

Does research add value to aid? Specifically, does impact evaluation research help or hinder the delivery of development projects? This paper analyzes the question by constructing a new data set of 100 impact evaluations and 1,135 projects approved by the World Bank between 2005 and 2011. The...

Cash transfers have been demonstrated to improve education and health outcomes and alleviate poverty in various contexts. However, policy makers and others often express concern that poor households will use transfers to buy alcohol, tobacco, or other "temptation goods." The income effect of...