This paper provides a critical review of the literature on non-market valuation methods to estimate the welfare impact of novel products; it is the first study to assess both observed data- and perception-based methods as non-market valuation methods. Observed databased methods include budgets,...

The net impact of pest-resistant GM crops on the welfare of both producers and consumers in developing countries is currently unknown and subject to speculation. This study uses choice-based conjoint protocol to estimate the net impact of pest-resistant Genetically Modified (GM) cowpea on net...

Member countries of the Economic Community of West African States (ECOWAS) are expected to form a West African Monetary Zone (WAMZ) by 2004 whereby member countries would use a common currency in an attempt to promote regional integration. Evidence suggests that reduction in transaction cost as...

This paper compares two estimation methods of a three-stage least squares (3SLS) system of equations, corrected for spatial autocorrelation. The modeling approach is novel in that it is an extension of Anselin's (1988) seemingly unrelated regression (SUR) space-time spatial error model for panel...

The goal of this research was to develop spatial regression methods to economically evaluate on-farm site-specific management (SSM) trials. Whether yields are collected with a combine yield monitor, a weigh wagon, or other technology, they usually have a spatial structure. Covariates including...

Due to a rapid yield decline, plantain fields in Southeastern Nigeria are reverted to fallow after two years. However, population pressure leads to shorter fallow periods and high rates of deforestation. This study investigates the potential of mulch-based systems for perennial plantain...