"Schätzung" . . "Sevan, Lacul (Armenia)" . . "Protecţia mediului Anchete Sevan, Lacul (Armenia)" . . . . "Armenien" . . "Willingness to pay / Naturschutz / See / Schätzung / Armenien." . . . . . . "Estimating Willingness-to-Pay with Random Valuation Models: An Application to Lake Sevan, Armenia"@en . . . . . . "Estimating willingess-to-pay with random valuation models : an application to Lake Sevan, Armenia"@en . . . . "This paper presents a case study of willingness-to-pay (WTP) estimation using random valuation models. A contingent valuation survey was conducted in Yerevan, Armenia to estimate people's WTP for the protection of Lake Sevan. Three elicitation formats--open-ended, closed-ended, and the stochastic payment card (SPC) approach--were used with split random samples. WTP models with heterogeneous errors were constructed and estimated with the survey data. The SPC approach produces a higher estimation of the mean WTP than both the open-ended and closed-ended approaches, while results from the open-ended and closed-ended elicitation formats are similar. Furthermore, contrary to research findings obtained in the United States, this study finds higher WTP estimations with mail surveys than with personal interviews. This paper--a product of the Infrastructure and Environment Team, Development Research Group--is part of a larger effort in the group to understand the economics of sustainable development in developing countries."@en . . . . . . . . . . . . . "Estimating willingess-to-pay with random valuation models an application to Lake Sevan, Armenia"@en . "Estimating Willingness-to-Pay with Random Valuation Models An Application to Lake Sevan, Armenia" . "Estimating willingness-to-pay with random valuation models : an application to Lake Sevan, Armenia" . . . . . . . . . . . . . "\"This paper presents a case study of willingness-to-pay (WTP) estimation using random valuation models. A contingent valuation survey was conducted in Yerevan, Armenia to estimate people's WTP for the protection of Lake Sevan. Three elicitation formats - open-ended, closed-ended, and the stochastic payment card (SPC) approach - were used with split random samples. WTP models with heterogeneous errors were constructed and estimated with the survey data. The SPC approach produces a higher estimation of the mean WTP than both the open-ended and closed-ended approaches, while results from the open-ended and closed-ended elicitation formats are similar. Furthermore, contrary to research findings obtained in the United States, this study finds higher WTP estimations with mail surveys than with personal interviews. This paper - a product of the Infrastructure and Environment Team, Development Research Group is part of a larger effort in the group to understand the economics of sustainable development in developing countries\"--World Bank web site."@en . . . . "Willingness to pay" . . "See" . . "Naturschutz" . . "Zonder onderwerpscode: wereldeconomie, ontwikkelingsproblematiek." . . "Sevan Lake (Armenia)" . . "International Bank for Reconstruction and Development Infrastructure and Environment Team" . .