Aiew, Wipon; Nayga, Rodolfo; Woodward, Richard - In: Applied Economics Letters 11 (2004) 9, pp. 581-585
This paper evaluates income variable specification and functional form issues in contingent-valuation studies using the utility-theoretic approach. Applying data from a study of willingness to pay for irradiated beef, results suggest that functional form does affect the estimates, but variable...