Two methods for calibrating discrete choice contingent valuation responses – the dichotomous choice with followup certainty question method of Champ et al. (1997) and the multiple bounded method of Welsh and Poe (1998) – are evaluated using data from a field validity comparison of...

Two methods for calibrating discrete choice contingent valuation responses—the dichotomous choice with follow-up certainty question method of and the multiple-bounded method of —are evaluated using data from a field validity comparison of hypothetical and actual participation decisions in a...