Fonta, William M.; Ichoku, H. Eme.; Kabubo-Mariara, Jane - In: Applied Health Economics and Health Policy 8 (2010) 4, pp. 225-237
'Protest zeros' occur when respondents reject some aspect of the contingent valuation (CV) market scenario by reporting a zero value even though they place a positive value on the amenity being valued. This is inevitable even in the best-designed CV study, and, when excluded on an ad hoc basis,...