TY - JOUR T1 - Incentive Incompatibility and Starting-Point Bias in Iterative Valuation Questions: Comment JF - Land Economics JO - Land Econ SP - 312 LP - 315 DO - 10.2307/3654745 VL - 80 IS - 2 AU - David Aadland AU - Arthur J. Caplan Y1 - 2004/05/01 UR - http://le.uwpress.org/content/80/2/312.abstract N2 - In a recent study, Whitehead (2002) proposes incentive-incompatibility and starting-point-bias tests for iterative willingness-to-pay questions. We show that if restrictions associated with the nature of starting-point bias are not imposed on the estimation, one obtains inconsistent estimates of the structural parameters and may draw inaccurate conclusions regarding the extent of incentive incompatibility and starting-point bias in contingent-valuation survey data. (JEL Q26, C35) ER -