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Characteristics of Two Measures of Profile Similarity

Published online by Cambridge University Press:  01 January 2025

Chester W. Harris*
Affiliation:
University of Wisconsin

Abstract

Analogs of Pearson's coefficient of racial likeness and of Mahalanobis' distance measure have been proposed as descriptive statistics for comparing two individuals. This paper shows that two different definitions of “uncorrelated” variables—one associated with an inverse transformation and the other with a principal-axis transformation—give rise to these two descriptive statistics. The effects of putting the data into certain forms, such as equalizing the variances of the variables or equalizing the means of the persons, prior to using either of the two transformations, are discussed.

Type
Original Paper
Copyright
Copyright © 1955 The Psychometric Society

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References

Cochran, W. G.. The distribution of quadratic forms in a normal applications to the analysis of variance. Proc. Cambridge Phil. Soc., 1934, 30, 178191CrossRefGoogle Scholar
Cronbach, L. J., Gleser, G. C.. Assessing similarity between profiles. Psychol. Bull., 1953, 50, 456473CrossRefGoogle ScholarPubMed
Gaier, E. L., Lee, M. C.. Pattern analysis: the configural approach to predictive measurement. Psychol. Bull., 1953, 50, 140148CrossRefGoogle ScholarPubMed
Harris, Chester W.. Relations among factors of raw, deviation, and double-centered score matrices. J. exp. Educ., 1953, 22, 5358CrossRefGoogle Scholar
Osgood, C. E., Suci, G. J.. A measure of relation determined by both mean difference and profile information. Psychol. Bull., 1952, 49, 251262CrossRefGoogle ScholarPubMed
Rao, C. R.. Advanced statistical methods in biometric research, New York: Wiley, 1952Google Scholar
Thorndike, R. L.. Who belongs in the family?. Psychometrika, 1953, 18, 267276CrossRefGoogle Scholar
Webster, H.. A note on profile similarity. Psychol. Bull., 1952, 49, 538539CrossRefGoogle ScholarPubMed