Donaldson, Cam; Thomas, Ruth; Torgerson, David - In: Applied Economics 29 (1997) 1, pp. 79-84
The open-ended and payment scale approaches to eliciting willingness to pay (WTP) valuations are compared. Use of the payment scale led to a higher response rate, a higher rate of completion of the WTP question, higher mean and median WTP values, a stronger association between WTP and ability to...