| Registro completo |
| Provedor de dados: |
AgEcon
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| País: |
United States
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| Título: |
Do CVM Welfare Estimates Suffer from On-Site Sampling Bias? A Comparison of On-Site and Household Visitor Surveys
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| Autores: |
Gonzalez-Sepulveda, Juan Marcos
Loomis, John B.
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| Data: |
2010-10-26
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| Ano: |
2010
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| Palavras-chave: |
Contingent valuation method
Endogenous stratification
On-site sampling bias
Environmental Economics and Policy
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| Resumo: |
The problem of endogenous stratification associated with on-site sampling has been overlooked in the Contingent Valuation Method (CVM). We find that using on-site samples of visitors overstates visitor willingness to pay (WTP) estimates relative to a household sample of visitors, and substantially overstates the unconditional population values. We provide two methods of correcting WTP of on-site samples. The uncorrected on-site sample CVM yields WTP of $132 per trip, while visitor WTP obtained from a random sample of households had a value of $66 per trip. Adaptation of choice-based sampling correction estimator to the on-site CVM data yields $73 per trip, not statistically different from the visitor value from the household survey, but significantly different from the uncorrected on-site sample value.
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| Tipo: |
Journal Article
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| Idioma: |
Inglês
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| Identificador: |
http://purl.umn.edu/95610
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| Relação: |
Agricultural and Resource Economics Review>Volume 39, Number 3, October 2010
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| Formato: |
10
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