BARREIRO HURLÉ, J. (Dpto. de Gestión de Empresas. Universidad Pública de Navarra.) PÉREZ Y PÉREZ, L (Unidad de Economía Agraria. Servicio de Investigación Agroalimentaria. Diputación General de Aragón.)
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La utilización del método de valoración contingente (MVC) como herramienta de valoración de los beneficios derivados de los espacios naturales protegidos está bastante extendida tanto en EE.UU. como en Europa desde los años 70, habiendo sido su desarrollo en España en los años 90. Existe, sin embargo, una falta de evidencia y consenso sobre la fiabilidad de los resultados que se pueden obtener mediante el MVC. En 1993, tras el accidente del petrolero Exxon Valdez se constituyó un grupo de expertos que emitieron un dictamen sobre la posibilidad del MVC para aportar estimaciones fiables, aunque hasta la fecha ningún ejercicio de valoración contingente ha seguido todas las recomendaciones de dicho grupo. Una de las recomendaciones era la utilización de encuestas en persona realizadas por entrevistadores profesionales, aspecto que aumenta sustancialmente el coste de aplicar el MVC para valorar activos ambientales. En este trabajo se contrasta el denominado sesgo del entrevistador, analizando el efecto sobre las estimaciones obtenidas de la utilización de encuestadores no profesionales sobre los resultados de una aplicación realizada en 1996 para valorar el Parque Posets-Maladeta en Aragón. The use of the contingent valuation method (CVM) as a tool to value environmental benefits supplied by protected natural areas is widespread in the US and Europe since the 1970´s and has had it’s development in Spain in the 1990’s. Nevertheless there is still a lack of consensus regarding CVM’s results reliability. After Exxon Valdez’s oil spill in 1993 a group of experts gave a review on the method’s validity with some criteria that should be met in order to make CVM a reliable tool, unfortunately, no study up to date has met all of the group’s recommendations. One of these recommendations was the use of professional interviewers to conduct CVM surveys, this substantially increases the cost of CVM applications. This paper tests the so called interviewer bias analysing then effects on the estimates obtained when using non-professional interviewers in CVM studies with data from an study carried out in the Parque Posets-Maladeta located in Aragón in 1996.
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Find related papers by JEL classification: Q26 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Recreational Aspects of Natural Resources
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Kopp, Raymond & Smith, V. Kerry & Mitchell, Robert & Presser, Stanley & Ruud, Paul & Hanemann, W. Michael & Krosnick, Jon & Conaway, Michael & Martin, Kerry & Carson, Richard, 1996.
"Was the NOAA Panel Correct About Contingent Valuation?,"
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dp-96-20, Resources For the Future.
[Downloadable!]
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Carson, Richard T. & Hanemann, W. Michael & Kopp, Raymond J. & Krosnick, Jon A. & Mitchell, Robert C. & Presser, Stanley & Ruud, Paul A. & Smith, V. Kerry, 1996.
"Was the NOAA Panel Correct about Contingent Valuation?,"
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96-21, Duke University, Department of Economics.
[Downloadable!]