A random-coefficients logit model that allows for unobserved heterogeneity in brand preferences and in the responses to marketing variables is empirically investigated using household-level panel data. The unknown underlying distribution of unobserved heterogeneity is approximated by a discrete distribution. The results reveal that there is significant unobserved heterogeneity across households and that ignoring its effects results in a downward bias in the parameter estimates of the marketing variables. It is, therefore, important to account for heterogeneity in both preferences and responses in the absence of any a priori knowledge about the nature of heterogeneity across households.
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Donkers, A.C.D. & Jonker, J-J. & Franses, Ph.H.B.F. & Paap, R., 2001.
"Deriving Target Selection Rules from Endogenously Selected Samples,"
Research Paper
ERS-2001-68-MKT Revision_, Erasmus Research Institute of Management (ERIM), ERIM is the joint research institute of the Rotterdam School of Management, Erasmus University and the Erasmus School of Economics (ESE) at Erasmus Uni.
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Other versions:
Fok, D. & Franses, Ph.H.B.F. & Paap, R., 2001.
"Incorporating Responsiveness to Marketing Efforts When Modeling Brand Choice,"
Research Paper
ERS-2001-47-MKT Revision_, Erasmus Research Institute of Management (ERIM), ERIM is the joint research institute of the Rotterdam School of Management, Erasmus University and the Erasmus School of Economics (ESE) at Erasmus Uni.
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