One major challenge when conducting contingent valuation studies in developing countries is the choice of the appropriate payment vehicle. Since regular cash-income does not exist for the majority of the population and market integration is low, households in rural areas have less experience...

The widespread use of pesticides in agriculture provides a particularly complex pattern of multidimensionalnegative side-effects, ranging from food safety related effects to the deterioratian of farmland ecosystems.The assessment of the economic implications of such negative processes is fraught...