Respondents of contingent valuation surveys may place a null value on the public good, for reasons that differ from a genuine indifference to the good, but that can be interpreted as a "protest": either against the interview, or the public management, or both. A good survey design can...

The idea that preferences are only revealed by real incentives is deeply embedded in economists' worldview. Consequently, evidence from hypothetical experiments has not readily permeated economic thinking. One method for determining whether hypothetical experiments provide useful information...

Selectivity bias caused by protest responses in Contingent Valuation studies can be detected and corrected by means of sample selection models. This paper compares two methods: the Heckman 2-steps method and the full ML, applied to data on forest recreation - where WTP is elicited as a...

In 1992 the National Oceanic and Atmospheric Administration (NOAA) convened a panel of prominent social scientists to assess the reliability of natural resource damage estimates derived from contingent valuation (CV). The product of the Panel's deliberations was a report that laid out a set of...

This paper considers two tests proposed to judge the internal consistency of contingent valuation estimates. Both tests are quite sensitive to the maintained hypotheses required to derive fairly precise expectations for the properties of WTP functions. This result suggests a different approach...

Overall, 72 subjects invest their endowment in four risky assets. Each com-bination of assets yields the same expected return and variance of returns. Illusion of expertise prevails when one prefers nevertheless the self-selected portfolio. After being randomly assigned to groups of four...

The gap between willingness-to-pay (WTP) and willingness-to-accept (WTA) benefit values typifies situations in which reference points — and direction of movement from reference points — are consequential. Why WTA-WTP discrepancies arise is not well understood. We generalize models of...

Models can be wrong and recognising their limitations is important in financial and economic decision making under uncertainty. Robust strategies, which are least sensitive to perturbations of the underlying model, take uncertainty into account. Finding the explicit set of alternative models...