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Concerning the Determination of Trait Variability

Published online by Cambridge University Press:  01 January 2025

Malcolm G. Preston
Malcolm G. Preston*
Affiliation:
University of Pennsylvania
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Abstract

An analytic technique for the study of trait variability is presented. An expression for the average variance from test to test and an expression for the variance of these variances are derived in terms of the number of tests and the intercorrelations between them, and limiting cases are examined. The question of the true relationship between the nature of the distribution of test scores in a sample of N persons and the nature of the distribution of n traits in a single individual is discussed, and other problems are introduced.

Type
Original Paper
Information
Psychometrika , Volume 5 , Issue 4 , December 1940 , pp. 275 - 281
Copyright
Copyright © 1940 The Psychometric Society

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References

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