Deworming and Development: Asking the Right Questions, Asking the Questions Right

Two billion people are infected with intestinal worms. In many areas, the majority of schoolchildren are infected, and the World Health Organization (WHO) has called for school-based mass deworming. The key area for debate is not whether deworming medicine works—in fact, the medical literature finds that treatment is highly effective, and thus the standard of care calls for treating any patient known to harbor an infection. As the authors of the Cochrane systematic review point out, a critical issue in evaluating current soil-transmitted helminth policies is whether the benefits of deworming exceed the costs or whether it would be more prudent to use the money for other purposes. While in general we think the Cochrane approach is very valuable, we argue below that many of the underlying studies of deworming suffer from three critical methodological problems: treatment externalities in dynamic infection systems, inadequate measurement of cognitive outcomes and school attendance, and sample attrition. We then argue that the currently available evidence from studies that address these issues is consistent with the consensus view expressed by other reviews and by policymakers that deworming is a very cost-effective way to increase school participation and has a high benefit to cost ratio.Economic

The Making of a Productivity Hotspot in the Coastal Ocean

Highly productive hotspots in the ocean often occur where complex physical forcing mechanisms lead to aggregation of primary and secondary producers. Understanding how hotspots persist, however, requires combining knowledge of the spatio-temporal linkages between geomorphology, physical forcing, and biological responses with the physiological requirements and movement of top predators.) off the Baja California peninsula, Mexico.We have identified the set of conditions that lead to a persistent top predator hotspot, which increases our understanding of how highly migratory species exploit productive regions of the ocean. These results will aid in the development of spatially and environmentally explicit management strategies for marine species of conservation concern

Deworming and Development: Asking the Right Questions, Asking the Questions Right

No abstrac

Employability, skills mismatch and spatial mismatch in metropolitan labour markets

The skills mismatch and spatial mismatch perspectives are often presented as competing explanations of the spatial distribution of unemployment within metropolitan areas. This paper argues that the spatial mismatch hypothesis addresses some of the shortcomings of the skills mismatch perspective, while not denying the importance of skills mismatch. The development of the spatial mismatch hypothesis in the US is traced, before considering its relevance in the British context. A framework in which to conceptualise and reconcile skills mismatch and spatial mismatch within metropolitan areas is developed, incorporating the operation of local housing and labour markets as well as the role of commuting. The paper concludes by arguing that skills and spatial mismatches reinforce each other and that the concept of employability offers some potential to help understand how job searchers and employers make decisions in situations of skills and/or spatial mismatch. The implications for future research are highlighted