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Edited by Anna Alberini and James R. Kahn
Chapter 10: Modelling Behaviour in Dichotomous Choice with Bayesian Methods
10 Modelling behaviour in dichotomous choice with Bayesian methods Carmelo J. León1 and Roberto León2 10.1 Introduction Contingent valuation (CV) aims at valuing public or environmental goods by relying on cross-section data from a sample of individuals. The essential variables to be elicited are the willingness to pay (WTP) for the commodity and the eﬀect of covariates which may explain individual variation. In this chapter we discuss the use of Bayesian techniques in contingent valuation. The econometric analysis of contingent valuation data sets has evolved in parallel with the advance in elicitation techniques. For instance, mean willingness to pay from the dichotomous choice model may turn out to be a non-linear function of the parameters estimated from a survival distribution. The Bayesian approach to inference diﬀers from the classical approach in that the likelihood function of observed data is combined with some prior information on the parameters of interest, in order to derive a posterior probability measure. Thus, the parameters to be estimated are always conditional on the observed data, and can be revised as new data comes out, whereas in classical methods the data are supposed to be the result of a probability measure determined by some population parameters. Bayesian methods can be introduced into the econometric analysis of any models for which the researcher is willing to specify a prior describing his/her beliefs about the parameters of interest before data are actually collected. In this sense, there are Bayesian models for the linear regression,...
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