Data on willingness-to-pay (WTP) collected from contingent valuation surveys are usuallycensoredat zero. Insuch cases, ordinary least squares estimationof the WTP equation produces inconsistent parameter estimates. The maximum likelihood estimation of the Tobit model, which is widely used in...

Controlling unsolicited commercial spam mail has become an increasingly critical issue. This study applies a contingent valuation method to measuring the inconvenience cost of spam mail. The mean willingness to pay for controlling the commercial spam mail per individual is estimated as 1836...

This study investigates the respondents' preference uncertainty in the dichotomous choice (DC) contingent valuation study for gathering information on willingness to pay (WTP). To this end, we use polychotomous choice (PC) question and DC question with certainty level for two split samples. We...

We attempt to value a cyber ecological park on the Internet by applying willingness to pay (WTP) survey techniques. The respondents' judgements required in the survey were within their abilities and the household's mean WTP for visiting the Woopo wetland cyber ecological park was estimated as...

In order to develop the proper policies for preventing climate change, it is necessary to know the public preference for preventing climate change. This study attempts to analyse public Willingness To Pay (WTP) for preventing climate change by applying a Contingent Valuation (CV) method. The...

Modelling public behaviour with the data from double bounded dichotomous choice contingent valuation surveys is often complicated by zero willingness to pay (WTP) responses in the sample. To deal with the zero response data to obtain an appropriate welfare measure such as the mean and median...

This article estimates a multinomial probit model structured according to the defensive expenditures for drinking water (DW) choice, using a Bayesian analysis with Gibbs sampling. We also approximate the nonmarginal benefit from discrete improvement in DW quality by calculating the willingness...

Approximating bottled water consumption (BWC) distribution is complicated by zero observations in the sample. To deal with the zero observations, a mixture model of BWC distributions is considered to allow a point mass at zero. The model is empirically verified for household BWC survey data.

Conventional parametric estimation of the hedonic price models is not robust to heteroscedastic and/or non-normal error structure. This paper applies least absolute deviations (LAD) estimation as a robust approach to estimating the hedonic price models, using the Korea housing markets data. The...

This article investigates empirically the impacts of the internet access charge on economic activity using a cross-country analysis based on data from 76 countries for the year 1998-2001. The results show that the level of the Internet access charge has a significantly negative effect on the...