A calibrated model is used to determine the welfare impacts of various regulatory instruments for improving health. The results of a lab experiment are integrated in a partial equilibrium model representing demands for two kinds of fish, one with higher nutritional benefits (canned sardines) and...

We evaluate the impact of different information sequences on participants’ hypothetical willingness to pay (WTP) for food produced using nanotechnology. In three treatment groups, information on the health, societal, or environmental impact linked to nanotechnology was revealed in...

An experiment was conducted in France to evaluate the impact of health information on consumer’s choice. Fish have positive and negative health attributes, and we focus on fish species of diverging risk-benefit ratios. Successive messages revealing risks (methylmercury) and benefits...

This article explores the combination of laboratory and field experiments in defining a welfare framework and the impact of different regulatory tools on consumer behaviors. First, an overview of strengths and weaknesses raised by the experimental literature show that, for food consumption, lab...

Une expérience a été menée en France et en Allemagne afin d'évaluer le consentement à payer des consommateurs pour les nanotechnologies alimentaires en se concentrant sur deux applications: un nano-enrichissement en vitamines et des nano-emballages. Les résultats montrent que de nombreux...

Ce texte s’intéresse aux choix réglementaires concernant l’exposition des consommateurs au méthyle-mercure et aux omégas 3. Des réactions liées à la révélation d’information et mesurées en laboratoire ont été intégrées dans un modèle calibré représentant la demande de...

A multiple price list is useful for eliciting a Willingness-to-Pay (WTP) and a possible Lower Limit (LL) under which the demand is zero. This multiple price list implies an aggregate demand determined by the number of participants whose WTP is greater than the market price and whose LL is below...

We compare the Becker-DeGroot-Marschak (BDM) mechanism to a discrete choice mechanism for revealing willingness to pay (WTP) in a lab experiment. Differences in WTP disappear when considering only engaged bidders with non-zero bids. Only WTP elicited with BDM are sensitive to the variation of...

For products with risky characteristics, there are many debates about the best way to inform consumers. Traffic-lights have been already implemented in the UK on food products to guide consumers in making healthier food choices. In response to the recent financial crisis, a discussion about the...

This paper focuses on the welfare effects of information computed from experimental methods eliciting willingness-topay. First, a theoretical model shows that the size of the welfare variation is related to the elasticity of the demand under the absence of information about a characteristic....