This paper investigates the impact of interviewer effects on willingness to pay (WTP) estimates. Face-to-face surveys were conducted with two interviewers. Both interviewers used a transcript and conducted the survey at the same location and at the same time. We found that responses to the WTP...

This special issue is a collection of papers that address three questions of critical importance to the design of eco-labeling marketing strategies and policies. These three questions deal respectively with the efficiency of eco-labels when considering market structure and trade, the credibility...