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...

The sample selection model is based upon a bivariate or a multivariate structure, and distributional assumptions are in this context more severe than in univariate settings, due to the limited availability of tractable multivariate distributions. While the standard FIML estimation of the...

I derive the value of marginal changes in a public good for two-person households, measured alternatively by household member i’s willingness to pay (WTP) for the good on behalf of the household, WTPi(H), or by the sum of individual WTP values across family members, WTP(C). Households are...

Cet article propose une évaluation contingente des services esthétiques et récréatifs rendus par un parc urbain. Les dispositions à payer d’un échantillon d’usagers d’un parc urbain dans la ville d’Angers (le parc Balzac) ont été révélées sur la base de deux scénarios...

I derive the marginal value of a public good in multiperson households, measured alternatively by one household member’s willingness to pay (WTP) for the good on behalf of the household, or by the sum of individual WTP values across family members. Households are assumed to allocate their...

Contingent valuation has been given a psychological interpretation, by Kahneman and colleagues, that claims willingness to pay bids represent psychological attitudes rather than personal economic valuations. Evidence reported here shows the need to qualify the role of this attitudinal...

While applied national accounts are based on market costs and outputs, non-market valuation techniques yield estimates for consumer or Hicksian surplus. To integrate non-market values in national accounts we propose the Simulated Exchange Value method, which simulates the whole market (demand...

This study tests the hypothesis that hypothetical bias may not be related to value elicitation; rather it may be a value formation problem. When participants are asked to indicate their willingness to pay for an induced value good, we find no evidence of hypothetical bias for three different...

The sample selection model is based upon a bivariate or a multivariate structure, and distributional assumptions are in this context more severe than in univariate settings, due to the limited availability of tractable multivariate distributions. While the standard FIML estimation of the...

The use of the contingent valuation method (CVM) policy analysis has grown significantly in the last two decades, with applications to a variety of public goods. The primary purpose of this paper is to present an application of the CVM to the valuation of projects for the improvement of some...