One of the most fruitful advances in modern economics has been the introduction of psychological realism into the model of "economic man." The World Development Report 2015 organizes the evidence about how humans actually think and make decisions into a coherent framework useful for designing...

This paper provides an overview of the history of development research at the World Bank and points to new future directions in both what we research and how we research. Six main messages emerge. First, research and data have long been essential elements of the Bank's country programs and its...

This study investigates the World Bank's use of lending and non-lending instruments to affect the policy priorities of developing countries. In a typical year, the World Bank lends more than $30 billion to its client countries. It also spends approximately $200 million on the provision of...

This study uses loan-level data on syndicated lending to a large sample of developing countries between 1993 and 2017 to estimate the mobilization effects of multilateral development banks (MDBs), that is, their ability to crowd-in capital from private creditors. Controlling for a large set of...

Do elites capture foreign aid? This paper documents that aid disbursements to highly aid-dependent countries coincide with sharp increases in bank deposits in offshore financial centers known for bank secrecy and private wealth management, but not in other financial centers. The estimates are...

This paper shows that the increased policy-selectivity of aid allocations observed in recent years provides recipient countries an incentive to improve policies. The paper estimates that a change in the World Banks Country Policy and Institutional Assessment policy index from 1.5 to 2 for a...

This paper argues for a novel approach to financing infrastructure needs in Arab countries. It first describes the context of rising public debt in the region, contrasting it with the vast infrastructure needs. It then discusses the challenges in meeting these needs with traditional financing....

Some multilateral agencies implement aid projects in a broad range of sectors, with aid disbursements showing a strong overlap with those of bilateral donors. The question then arises of why do bilateral donors delegate sizable shares of their aid to non-specialized agencies for implementation?...

This paper examines whether domestic output growth helps attract capital inflows and, in turn, capital inflows help boost output growth in a set of 38 Sub-Saharan African countries. Using a two-step approach to address reverse causality and omitted variable issues, the paper finds that output...

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...