Understanding what determines the geographic spread of innovations can help guide the funding and implementation of research and extension programs. Our approach uses household survey data as model parameters, to simulate behavior across the entire surveyed population and avoid the aggregation...

In this study we analyze recent and proposed maize marketing reforms in Zambia. To capture the effects of changing transport systems, we use a continuous-space model in place of the traditional point-representation model of Takayama and Judge. This method permits us to use prereform data on...