There are significant weaknesses in some of the traditional justifications for assuming that aid will foster development. This paper looks at what the cross-country aid effectiveness literature and World Bank Operations Evaluation Department reviews have suggested about effective aid, first in...

This paper develops a framework to bound the welfare impacts of reforms to notches using two sufficient statistics: (1) the number of households bunching at the old notch who move toward the new notch, and (2) the number of households who "jump” down to the new notch. The bounds hold in a wide...

While barriers to trade in most goods and some services including capital flows have been reduced considerably over the past two decades, many remain. Such policies harm most the economies imposing them, but the worst of the merchandise barriers (in agriculture and textiles) are particularly...

The proliferation of preferential trade liberalization over the past 20 years has raised the question of whether it slows down multilateral trade liberalization. Recent theoretical and empirical evidence indicates this is the case even for unilateral preferences that industrial countries provide...

Using panel data for Peru for 1994-2000, the authors find that when households receive two, or more services jointly, the welfare increases as measured by changes in consumption are larger than when services are provided separately. The increases appear to be more than proportional, as F-tests...

This paper assesses the impact of social assistance benefits on household welfare in Moldova. Ignoring standard issues of impact evaluations such as selection bias, behavioral responses, unobserved heterogeneity and endogeneity, an incidence analysis suggests that increased spending on social...

The authors assess the effect of economic instability on the success of projects funded by the World Bank using the outcome of the projects, which is a notation of their overall success determined by the Bank's Independent Evaluation Group. It has been argued in macroeconomic studies that aid...

The 2005 Paris Declaration on Aid Effectiveness sets targets for increased use by donors of recipient country systems for managing aid. It also calls for donors to be more responsive to the quality of recipient country systems: the optimal level of their use, in terms of maximizing the...

After the tsunami in Aceh, Indonesia, the recovery of fishing was limited while non-fishing sectors temporarily expanded. This paper shows that fishermen's ex-post labor supply responses continued to be constrained by the provision of low quality production assets. The average fishing...

The demand for accountability in aid-for-trade is increasing but monitoring has focused on case studies and impressionistic narratives. The paper reviews recent evidence from a wide range of studies, recognizing that a multiplicity of approaches is needed to learn what works and what does not....