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External Analyses of Preference Models

Published online by Cambridge University Press:  01 January 2025

Mark L. Davison*
Affiliation:
University of Minnesota
*
Requests for reprints should be sent to Mark L. Davison, Department of Social, Psychological, and Philosophical Foundations of Education, University of Minnesota, Minneapolis, Minnesota 55455.

Abstract

Using Carroll's external analysis, several studies have found that unfolding models account for more, although seldom significantly more, variance in preferences than Tucker's vector model. In studies of sociometric ratings and political preferences, the unfolding model again rarely outpredicted the vector model by a significant amount. Yet on cross-validation, the unfolding model consistently accounted for more variance. Results suggest that sometimes significance tests are less sensitive than cross-validation procedures to the small but consistent superiority of the unfolding model. Future researchers may wish to use significance tests and cross-validation techniques in comparing models.

Type
Original Paper
Copyright
Copyright © 1976 The Psychometric Society

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References

Reference Notes

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