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Comparatal Dispersion, a Measure of Accuracy of Judgment

Published online by Cambridge University Press:  01 January 2025

Harold Gulliksen
Harold Gulliksen*
Affiliation:
Princeton University and Educational Testing Service
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Abstract

It is suggested that the ambiguity of a set of paired comparison judgments may be measured by the quantity √σi2 + σj2 − 2rijσiσi, This quantity is termed the comparatal dispersion. A simultaneous solution for scale values and ratios of comparatal dispersions has been presented and applied to some data on food preferences.

Type
Original Paper
Information
Psychometrika , Volume 23 , Issue 2 , June 1958 , pp. 137 - 150
Copyright
Copyright © 1958 The Psychometric Society

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Footnotes

*

This research was jointly supported in part by Princeton University, the Office of Naval Research under contract Nonr-1858(15), and the National Science Foundation under grant NSF G-642, and in part by Educational Testing Service. Reproduction in whole or in part is permitted for any purpose of the United States Government.

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