This paper confirms recent evidence of a positive impact of aid on growth and widens the scope of evaluation to a range of outcomes including proximate sources of growth (e.g., physical and human capital), indicators of social welfare (e.g., poverty and infant mortality), and measures of...

What determines how much foreign aid donors provide? Existing answers to this question point to a complex range of influences. However, the tasks of distinguishing between long- and short-run factors, as well as differences between donors, have not been adequately addressed. Taking advantage of...

Summary The paper examines the revenue effects of certified organic contract farming for smallholders and of adoption of organic agricultural farming methods in a tropical African context. The comparison in both cases is with farming systems that are "organic by default." Survey data from a...

The Herzer et al. (2014) comment on our article (Lof et al., 2014) addresses two issues. First, they propose various ways to circumvent our concerns regarding data handling in a paper by Nowak-Lehmann et al. (2012). We point out that under these new approaches the link between the empirical...

This study provides a replication of the empirical results reported by Nowak-Lehmann, Dreher, Herzer, Klasen, and Martínez-Zarzoso (2012) (henceforth NDHKM). We uncover that NDHKM relied on a regression model which included a log transformation of variables that are not strictly positive. This...

Summary History, not predictions of CGE models or cross-country growth studies, shows a strong relationship between trade and development. Vietnam's experience with bilateral trade agreements, comparing actual outcomes with predictions from existing models, demonstrates this and the limitations...