In this article we analyse the relative importance of individual ability and labour market institutions, including public sector wage setting and trade unions, in determining earnings differences across different types of employment. To do this we use the KwaZulu-Natal Income Dynamics Study panel data from South Africa, which show extremely large average earnings differentials across differen…

We study the impact of post-election ethnic violence in Kenya on the wheat and maize market in Mombasa and find empirical evidence that for these food markets, there is no impact on prices following violence. Using a data set of a flour producing firm, we identify the degree of persistence in prices and quantities by means of techniques based on long memory and long range dependence. Prices…

Phytophagous pentatomid insects can negatively impact agricultural productivity and the brown marmorated stink bug (Halyomorpha halys) is an emerging invasive pest responsible for damage to many fruit crops and ornamental plants in North America. Many phytophagous stink bugs, including H. halys, harbor gammaproteobacterial symbionts that likely contribute to host development, and characterizati…

The objective of this article is to explore the effects of crises and openness on a large sample of African countries. Focusing on sudden stops, currency, twin and sovereign debt crises, the article shows that crises are associated with growth collapses in Africa. In contrast, openness is found to be beneficial to growth. More specifically, consistent with standard Mundell�Fleming type mod…

This study aims to investigate the experience of six early-career teachers who team-taught grammar to EFL college students using data-driven learning (DDL) for the first time. The results show that the teachers found DDL an innovative and interesting approach to teaching grammar, approved of DDL’s capacity to provide more incentives for students to engage in discussion, and endorsed its effec…

Curriculum innovation is challenging and, as several commentators have reported, moves to introduce communicative language teaching in many contexts internationally have resulted in mixed outcomes, or even failure. In an effort to shed some light on this complex problem, this article focuses on curriculum change through the introduction of new communicative textbooks in an engineering college …

Two tax a studied to date, the therian mammals and Caen or habd it is elegans, display under representations of mito nuclear genes (mtN genes, nuclear genes who seproducts are imported to and act within the mitochondria) on their X chromosomes. This pattern has been interpreted as the result of sexual conflict driving mt-N genes off of the X chromosome. However, studies inseveral other sp…

In TESOL teacher mentoring, giving advice can be conceptualized as a continuum, ranging from directive to facilitative feedback. The goal, over time, is to lead toward the facilitative end of the continuum and specifically to catalytic interventions that encourage self-reflection and autonomous learning. This study begins by examining research on the mentor’s advicegiving role. Next, the exp…

Shocks to world commodity prices and the depreciation of sterling led to a large increase in the price of food in the UK. It also resulted in large changes in the relative prices of different foods. We document these changes, and consider how they affected the composition of households� shopping baskets. We isolate the impact of changes in relative food prices from variation in preferences…

In this paper we present an empirical study of a supermarket supply chain to understand the determinants of prices and profits enjoyed by farmers, processors, and supermarkets. We study the liquid milk market which has seen much controversy about both the distribution of rents and the mechanisms firms have used to influence the distribution. We discuss insights from a series of interviews we co…