Not much attention has been given to protest responses in choice experiments (CE). Using follow-up statements, we are able to identify protest responses and compute welfare estimates with and without the inclusion of such protest responses. We conclude that protest responses are fairly common in...

Temporal aspects of environmental preferences and willingness to pay (WTP) have not yet received attention comparable to their importance. We investigate how WTP and preferences have evolved over five years. Data generated by two identical contingent valuation surveys on oil spill prevention...