Comparing Apples to Oranges
Published 3/15/2008
Author: Lynd Bacon, Peter Lenk, Katya Seryakova, and Ellen Veccia
Summary
MaxDiff scaling and discrete-choice conjoint methods measure subjects’ preference structures relevant to a common referent, thus removing a common scale origin for between-subject comparisons. Subject-level estimates of the partworths from discrete-choice and MaxDiff are not on a common scale across subjects; they do not have the same scale “zero point.” This article describes augmenting choice-based tasks with ratings to recover the lost origin. The benefit is to extend the utility of discrete-choice methods to domains such as segmentation and targeting.Please register or login to view this article