Preference uncertainty in non-market valuation: A fuzzy approach

In this article, we consider uncertain preferences for non-market goods, bu t we move away from a probabilistic representation of uncertainty and propo se the use of fuzzy contingent valuation. We assume that a decision maker n ever fully knows her own utility function and we treat utility as a fuzzy n umber. The methodology is illustrated using data on forest valuation in Swe den. Fuzzy contingent valuation provides estimates of resource value in the form of a fuzzy number and includes estimates obtained using a standard pr obabilistic approach.