A contingent valuation test for measuring the construct validity of willingness-to-pay estimates derived from choice-experiments.

We introduce a protocol for measuring the construct validity of competing willingness-to-pay (WTP) distributions derived from mixed logit models. The protocol is based on a two-round survey. Round 1 consists in a standard discrete choice experiment (DCE) sample survey, at the end of which competing models are estimated. Round 2 introduces additional respondents who, in addition to taking part in the DCE, are asked to identify the money value interval that better reflects their preferences using a set of values drawn from the estimated range of WTPs obtained from competing models estimated on the previous sample

A Contingent Valuation Test for Measuring the Construct Validity of Willingness-to-pay Estimates derived from choice-experiments

We introduce a protocol for measuring the construct validity of competing willingness-to-pay (WTP) distributions derived from mixed logit models. The protocol is based on a two-round survey. Round 1 consists in a standard discrete choice experiment (DCE) sample survey, at the end of which competing models are estimated. Round 2 introduces additional respondents who, in addition to taking part in the DCE, are asked to identify the money value interval that better reflects their preferences using a set of values drawn from the estimated range of WTPs obtained from competing models estimated on the previous sample

Évaluation pilote des choix expérimentaux auprès de spécialistes français du nucléaire : mesure de la valeur intangible de territoires contaminés

International audienceA discrete choice experiment was conducted in France to value the loss of welfare from a nuclear accident, using a sample of 400 respondent working in the French nuclear safety authority (ASN) and the French Institute for radiation protection and nuclear safety (IRSN). The respondents were asked to choose between three different alternatives describing life conditions in their supposed living territory after a nuclear accident. These alternatives were characterized by the proportion of people who stay in the territory after the accident, the proportion of services remaining in the territory, whether or not access to nature is prohibited and the duration of the deteriorated situation. A mixed-logit model shows that the access to areas of nature and the runaway of services are the main sources of disutility. People having children under 18 years old and those living outside the Paris region give more importance to these aspects, whereas younger people and people leaving in the Paris region value the proportion of persons and services around them higher. The mean willingness to pay (WTP) per household to avoid living in a contaminated territory for 30 years is about 18,000 euros. An important finding of the paper is that places considered as more important by inhabitants are not necessarily the ones they attend more. The study sheds some light on strategies to mitigate welfare loss of welfare after a nuclear accident

Évaluation pilote des choix expérimentaux auprès de spécialistes français du nucléaire : mesure de la valeur intangible de territoires contaminés

International audienceA discrete choice experiment was conducted in France to value the loss of welfare from a nuclear accident, using a sample of 400 respondent working in the French nuclear safety authority (ASN) and the French Institute for radiation protection and nuclear safety (IRSN). The respondents were asked to choose between three different alternatives describing life conditions in their supposed living territory after a nuclear accident. These alternatives were characterized by the proportion of people who stay in the territory after the accident, the proportion of services remaining in the territory, whether or not access to nature is prohibited and the duration of the deteriorated situation. A mixed-logit model shows that the access to areas of nature and the runaway of services are the main sources of disutility. People having children under 18 years old and those living outside the Paris region give more importance to these aspects, whereas younger people and people leaving in the Paris region value the proportion of persons and services around them higher. The mean willingness to pay (WTP) per household to avoid living in a contaminated territory for 30 years is about 18,000 euros. An important finding of the paper is that places considered as more important by inhabitants are not necessarily the ones they attend more. The study sheds some light on strategies to mitigate welfare loss of welfare after a nuclear accident

Évaluation pilote des choix expérimentaux auprès de spécialistes français du nucléaire : mesure de la valeur intangible de territoires contaminés

International audienceA discrete choice experiment was conducted in France to value the loss of welfare from a nuclear accident, using a sample of 400 respondent working in the French nuclear safety authority (ASN) and the French Institute for radiation protection and nuclear safety (IRSN). The respondents were asked to choose between three different alternatives describing life conditions in their supposed living territory after a nuclear accident. These alternatives were characterized by the proportion of people who stay in the territory after the accident, the proportion of services remaining in the territory, whether or not access to nature is prohibited and the duration of the deteriorated situation. A mixed-logit model shows that the access to areas of nature and the runaway of services are the main sources of disutility. People having children under 18 years old and those living outside the Paris region give more importance to these aspects, whereas younger people and people leaving in the Paris region value the proportion of persons and services around them higher. The mean willingness to pay (WTP) per household to avoid living in a contaminated territory for 30 years is about 18,000 euros. An important finding of the paper is that places considered as more important by inhabitants are not necessarily the ones they attend more. The study sheds some light on strategies to mitigate welfare loss of welfare after a nuclear accident

Un guide pratique des méthodes de préférences déclarées

International audienceThis volume contains good practice protocols for the economic valuation of non-market forest goods and services developed by participants to the European Cooperation in Science and Technology (COST) Action 45 “European forest externalities (EUROFOREX – COST E45). A previous version of this guide was made available by DiGeSA, University of Catania, Italy. The starting point for the Action was that, although there is a considerable body of research in Europe concerning the valuation of forest externalities, the results from these valuation studies are often not comparable due to variations in the application of the valuation methods and the reporting of results. The aim of the protocols is to facilitate a better and more consistent application and reporting of nonmarket valuation projects. Action E45 involved 20 European countries and two non-European institutions, from New Zealand and Tunisia. It was organized into three working groups, each focusing on a family of valuation methods. One group was concerned with the stated preference methods. Two variants were studied in particular: contingent valuation and choice experiments. Another working group focused on the use of the revealed preference methods, such as the hedonic pricing approach and the travel cost models. The remaining group covered the benefit transfer approaches