Using data from two Choice Experiment environmental valuation surveys we investigate several different ways of handling respondent uncertainty. In both surveys respondents are asked to state their certainty of choice after each single choice set. We evaluate three different recoding-of-answers...

In a choice experiment we test income effects for different attributes and we test the effect of stated expected changes in future income on stated WTP. We find both present and future income to be significant determinants of stated WTP when included in the same model. We also find that the less...