Hostname: page-component-745bb68f8f-l4dxg Total loading time: 0 Render date: 2025-01-08T11:59:46.575Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access Rights & Permissions [Opens in a new window]

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

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

Edwards, A. L.. The scaling of stimuli by the method of successive intervals. J. appl. Psychol., 1952, 36, 118–122CrossRefGoogle Scholar
Burros, R. H.. The estimation of the discriminal dispersion in the method of successive intervals. Psychometrika, 1955, 20, 299–305CrossRefGoogle Scholar
Guilford, J. P.. Psychometric methods, New York: Mc-Graw Hill, 1936Google Scholar
Hevner, H.. An empirical study of three psychophysical methods. J. gen. Psychol., 1930, 4, 191–212CrossRefGoogle Scholar
Saffir, M. A.. A comparative study of scales constructed by three psychophysical methods. Psychometrika, 1937, 2, 179–198CrossRefGoogle Scholar
Thurstone, L. L.. A method of scaling psychological and educational tests. J. educ. Psychol., 1925, 16, 433–451CrossRefGoogle Scholar
Thurstone, L. L.. Psychophysical analysis. Amer. J. Psychol., 1927, 38, 368–389CrossRefGoogle Scholar
Thurstone, L. L.. A law of comparative judgment. Psychol. Rev., 1927, 34, 273–286CrossRefGoogle Scholar