Random Coefficient Models for Stated Preference Surveys

This paper combines the use of random coefficient discrete choice models that allow for correlated errors in the form of unobserved preference heterogeneity with an investigation of the reliability and usefulness of rankings data. For the data we examine, we find significant unobserved preference he...

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Bibliographic Details
Published in:Journal of environmental economics and management 2000-07, Vol.40 (1), p.21-36
Main Author: Layton, David F.
Format: Article
Language:English
Subjects:
Coefficient of determination
Coefficient of variation
Econometric models
Econometrics
Economic models
Economic theory
Environmental cleanup
Environmental economics
Polls & surveys
Ratings & rankings
Regression analysis
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Summary:This paper combines the use of random coefficient discrete choice models that allow for correlated errors in the form of unobserved preference heterogeneity with an investigation of the reliability and usefulness of rankings data. For the data we examine, we find significant unobserved preference heterogeneity in the rankings, which violates the underlying assumptions of the rank-ordered logit model. Further, directly modeling unobserved preference heterogeneity results in significant improvement in the precision of the parameter estimates and in estimated Willingness to Pay (WTP). The reliability and usefulness of rankings data should be re-examined with econometric models not subject to the Independence of Irrelevant Alternatives (IIA).
ISSN:0095-0696
1096-0449
DOI:10.1006/jeem.1999.1104