In a stated preference valuation survey, the expected benefits of environmental policies are generally presented to respondents without reference to the fact that the predicted outcomes are rarely known with certainty. This omission may reduce the credibility of the valuation scenario and...

Evaluating land use change in economic frameworks often requires non-market values to be assessed. However non-market valuation experiments can be sensitive to the way the trade offs are framed. The aim of the research reported in this paper was to examine the influence of varying the valuation...