期刊名称：Departmental Discussion Papers / University of Glasgow, Department of Economics
出版年度：2002
卷号：1
出版社：University of Glasgow, Department of Economics
摘要：In this paper we explore the idea that people only know the value they place on a given
environmental change as a range, rather than as a singleton. We use the payment ladder
design of contingent valuation, and take as a case study the value of coastal water quality
improvements in Scotland. Kaplan-Meier survival curves, Tobit analysis and a modified
Turnbull algorithm are used to explore the data. We find that most people state their values as
a range, and investigate empirically the determinants of this range. The paper concludes with
some thoughts concerning possible links between value ranges, context-dependence and
uncertainty
