TITLE

Dynamic Models Incorporating Individual Heterogeneity: Utility Evolution in Conjoint Analysis

AUTHOR(S)
Liechty, John C.; Fong, Duncan K. H.; DeSarbo, Wayne S.
PUB. DATE
March 2005
SOURCE
Marketing Science;Spring2005, Vol. 24 Issue 2, p285
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
It has been shown in the behavioral decision making, marketing research, and psychometric literature that the structure underlying preferences can change during the administration of repeated measurements (e.g., conjoint analysis) and data collection because of effects from learning, fatigue, boredom, and so on. In this research note, we propose a new class of hierarchical dynamic Bayesian models for capturing such dynamic effects in conjoint applications, which extend the standard hierarchical Bayesian random effects and existing dynamic Bayesian models by allowing for individual-level heterogeneity around an aggregate dynamic trend. Using simulated conjoint data, we explore the performance of these new dynamic models, incorporating individual-level heterogeneity across a number of possible types of dynamic effects, and demonstrate the derived benefits versus static models. In addition, we introduce the idea of an unbiased dynamic estimate, and demonstrate that using a counterbalanced design is important from an estimation perspective when parameter dynamics are present.
ACCESSION #
17149997

 

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