PT - JOURNAL ARTICLE AU - David Aadland AU - Arthur J. Caplan TI - Incentive Incompatibility and Starting-Point Bias in Iterative Valuation Questions: Comment AID - 10.2307/3654745 DP - 2004 May 01 TA - Land Economics PG - 312--315 VI - 80 IP - 2 4099 - http://le.uwpress.org/content/80/2/312.short 4100 - http://le.uwpress.org/content/80/2/312.full SO - Land Econ2004 May 01; 80 AB - 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)