This article introduces a new spatial price analysis methodology based on maximum likelihood estimation of a mixture distribution model incorporating price, transfer cost, and trade flow data. This method permits differentiation between market integration and competitive market equilibrium and...

Although food aid may have important medium- to long-term effects, there is a glaring absence of empirical research on food aid dynamics. This paper applies vector autoregression methods to data from 18 countries over the period 1961-95. We find evidence that food aid has a pronounced J-curve...

This paper compares the performance of alternative models of east Asian exchange rates at different data frequencies. Selected models employ different specifications of the conditional variance and the conditional error distribution. Conditional variance specifications include: homoscedasticity,...

This paper demonstrates that there are potentially large returns to having a social protection policy that stakes out a productive safety net below the vulnerable and keeps them from slipping into a poverty trap. Much of the value of the productive safety net comes from mitigating the ex ante...