Distinguishing protest responses in contingent valuation: A conceptualization of motivations and attitudes behind them.

The percentage of protesters in contingent valuation surveys is substantial-about 20% across many studies. This paper seeks to clarify the motivations behind protest responses. In addition, the question whether the estimation of willingness to pay (WTP) is more biased by the exclusion or inclusion of protest bids is yet undecided.

Willingness to pay and moral stance: The case of farm animal welfare in Germany.

This study examines the impact of ethical attitude on the willingness to pay for farm animal welfare improvement in Germany. Little is known about the pluralism of moral attitudes that may exist behind farm animal welfare issues and its relationship to customers' willingness to pay for it. Via a large survey (n = 1334) we are able to identify different moral dimensions by employing validated scales.