Snowball, J. D.; Willis, K. G. - In: Applied Economics Letters 18 (2011) 16, pp. 1521-1525
Since the NOAA (National Oceanic and Atmospheric Administration) panel (1993) on Contingent Valuation (CV), it has been accepted that Willingness to Pay (WTP) data should ideally be collected using only face-to-face interviews and not self-completion surveys. However, there has been little...
