Sensitivity of WTP Estimates to Definition of ‘Yes’: Reinterpreting Expressed Response Intensity
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چکیده
Copyright 2010 Northeastern Agricultural and Resource Economics Association It is especially important that researchers be cautious about presenting willingness to pay (WTP) point estimates to policy makers when the estimates are sensitive to subjective decisions that the researchers make during the estimation process. It is well known that WTP point estimates are sensitive to the choice regarding which observations should be included in aWTP estimation model as ‘yes’ (or “willing”) responses and which as ‘no’ (“not willing”) responses, when contingent valuation (CV) data are collected in formats that accommodate varying levels of “response intensity”1 (Akter et al. 2009, Champ, Alberini, and Correas 2005, Shaikh, Sun, and van Kooten 2007, Vossler et al. 2004, Samnaliev, Stevens, and More 2006, Broberg and Brannlund 2008). However, Sensitivity of WTP Estimates to Definition of ‘Yes’: Reinterpreting Expressed Response Intensity
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