This paper analyses the impacts of trade policy responses to rising world food prices by carrying out a series of stylised experiments in the wheat market using a world trade model, GTAP. The sequence of events that is modelled comprises a negative wheat supply shock and subsequent...

We explore whether the creation of the Ethiopian Commodity Exchange (ECX) and its formal monitoring and enforcement institutions has affected social capital and trust in the Ethiopian segment of the sesame value chain. Consistent with a simple theoretical marketing model, our panel data suggest...