Gonzalez-Sepulveda, Juan Marcos; Loomis, John B. - In: Agricultural and Resource Economics Review 39 (2010) 3
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...