This paper summarizes the long history of the contingent valuation method, stressing the important dates and events that influenced its economic applications. It reviews the economic theory of contingent valuation, highlights the related survey design, alludes to the econometrics methodology...

A revealed-preference-based method is proposed for assessment of the environmental and human health impact of genetically engineered (GE) crops. This method employs the relative pesticide toxicity information from farmers' pesticide choices combined with volume of pesticides as an alternative to...