In this note we conduct construct validity tests for dichotomous choice (DC) and polychotomous choice (PC) contingent valuation questions. Contrary to previous results, we find that DC and PC estimates of willingness to pay are theoretically valid, convergent valid, and similar in terms of...

For some respondents, the bid offered by the dichotomous choice format used in the discrete choice technique can in fact be the true optimum. In this case the correct answer is neither ‘yes’ or ‘no’, but ‘indifferent’. We shall show results from a trichotomous choice format and...

In this paper we propose a Bayesian approach to model double bounded contingent valuation data. The double bounded elicitation method is interpreted as a two tier iterated process in which the subject is allowed to have a second thought about his/her valuation for the environmental good. Prior...

Una dificultad presente en la gestión de recursos medioambientales es la ausencia de mercados que asignen un valor económico a sus funciones. En este estudio, se ha aplicado un método directo de valoración (método dicotómico simple de valoración contingente) y otro indirecto (método...