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The Law of Comparative Judgment in the Successive Intervals and Graphic Rating Scale Methods

Published online by Cambridge University Press:  01 January 2025

H. J. A. Rimoldi  and
M. Hormaeche
H. J. A. Rimoldi
Affiliation:
University of Chicago
M. Hormaeche
Affiliation:
University of Virginia
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Abstract

The law of comparative judgment is applied to the successive intervals and graphic rating scale methods. A procedure for estimating the modal discriminal process and discriminal dispersion of the stimuli, as well as the value of the boundaries of the intervals on the continuum, is given. From the estimated values it is possible to determine the theoretical proportions and to compare them with the actual experimental proportions. The agreement between these values is an indication of the adequacy of the assumptions made.

Type
Original Paper
Information
Psychometrika , Volume 20 , Issue 4 , December 1955 , pp. 307 - 318
Copyright
Copyright © 1955 The Psychometric Society

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Footnotes

*

This article is the first part of a larger study conducted at the Laboratorio de Psicologia, Facultad de Humanidades y Ciencias, Montevideo, Uruguay, during the years 1951 and 1952. The authors want to thank Dr. L. V. Jones for his critical comments on the manuscript. The authors have been informed by the editors of Psychometrika that R. H. Burros (2) has independently reached the same analytic solution for the computation of stimulus dispersions. Dr. Burros has used a set of assumptions different from the ones stated in the present paper.

†

Now at Loyola University, Chicago, Ill.

References

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