We use data from the Ethiopia Rural Household Survey and the Ethiopian Central Statistics Agency to demonstrate a set of techniques for estimating optimal investment allocation in smallholder farming. The approaches treat farming tasks, constraints, and investments as a portfolio problem,...

In this paper, I explore the reactions of financial market participants to news relating to the Kimberley Process Certification Scheme (KPCS), a body that regulates aspects of global diamond production and trade. I use an event study approach with data on the returns for shares of leading global...