The paper considers the macroeconomic impact of shocks to agricultural output and of negative and positive price shocks. It is shown that negative price shocks have particularly large externalities: it is estimated that the overall impact of these negative shocks on GDP may well be double their...

This paper extends and applies principal-agent theory to the performance of donor projects. There is variation in the degree of divergence between the interests of the donor (the principal) and the recipient government (the agent). Further, the effort expended on observation of the agent is a...

For Africa, a regional customs union is unlikely to realise net welfare gains (in the sense of trade creation dominating trade diversion) which cannot be attained through unilateral trade liberalization. Unilateral reform has often failed in Africa, however. A regional customs union tied to...

This paper extends and applies principal-agent theory to the performance of donor projects. There is variation in the degree of divergence between the interests of the donor (the principal) and the recipient government (the agent). Further, the effort expended on observation of the agent is a...