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	Provedor de dados AgEcon (3) Autor Bergstrom, John C. (1) Bowker, James Michael (1) Gonzalez-Sepulveda, Juan Marcos (1) Johnson, Donn M. (1) Loomis, John B. (1) McKean, John R. (1) Sardana, Kavita (1) Taylor, R. Garth (1) Mais... Palavra-chave Endogenous stratification (3) Environmental Economics and Policy (2) Choice based data (1) Contingent behavior (1) Contingent valuation method (1) Count data (1) Exogenous stratification (1) Follow-on site (1) Location value (1) Multiple destination (1) On-site sampling bias (1) Option value (1) Outdoor recreation (1) Q000 (1) Q500 (1) Resource /Energy Economics and Policy (1) Short-run demand (1) Travel cost method (1) Mais... Tipo do documento Journal Article (2) Conference Paper or Presentation (1) Ano 2010 (3) País United States (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Modeling Demand for Outdoor Recreation Settings with Choice Based Data Accounting for Exogenous and Endogenous Stratification AgEcon Sardana, Kavita; Bowker, James Michael; Bergstrom, John C.. Estimating regional demand models by pooling different samples without correcting for such differences causes model misspecification as each sample belongs to a different population. Weighted regression using Pseudolikelihood to account for differences in sample population with adjustment for heteroskedasticity improves efficiency but the estimates are biased. We estimate regional demand for National Forest settings types in the southeastern states of U.S using weighted and unweighted regression. Using estimation of demand for National Forests as a case study, we resolve problems relating to inference about the data generating process when different samples are pooled together. We show that though efficiency of weighted estimates improves after correcting... Tipo: Conference Paper or Presentation Palavras-chave: Exogenous stratification; Endogenous stratification; Choice based data; Outdoor recreation; Environmental Economics and Policy; Q000; Q500. Ano: 2010 URL: http://purl.umn.edu/61046 Measuring the Location Value of a Recreation Site AgEcon Taylor, R. Garth; McKean, John R.; Johnson, Donn M.. The demand for sport fishing on the Snake River reservoirs was estimated using the travel cost method. A short-run demand model was specified with location value for anglers who have the option to access a follow-on site if fishing conditions are poor. Willingness to pay for a fishing trip to the site was $18.52 for anglers who did not have a follow-on site and $43.48 for anglers who did. A location value of $24.96 accrued only to anglers with a follow-on site. Total annual site value was understated by as much as 40% ($0.78 million) if location value for anglers with a follow-on site was excluded from the benefit estimate. Tipo: Journal Article Palavras-chave: Contingent behavior; Count data; Endogenous stratification; Follow-on site; Location value; Multiple destination; Option value; Short-run demand; Travel cost method; Resource /Energy Economics and Policy. Ano: 2010 URL: http://purl.umn.edu/61063 Do CVM Welfare Estimates Suffer from On-Site Sampling Bias? A Comparison of On-Site and Household Visitor Surveys AgEcon Gonzalez-Sepulveda, Juan Marcos; Loomis, John B.. 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... Tipo: Journal Article Palavras-chave: Contingent valuation method; Endogenous stratification; On-site sampling bias; Environmental Economics and Policy. Ano: 2010 URL: http://purl.umn.edu/95610 Registros recuperados: 3 Primeira ... 1 ... Última

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