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The Occurrence of an Increase in Correlation by Restriction of Range

Published online by Cambridge University Press:  01 January 2025

Joseph Levin
Joseph Levin*
Affiliation:
Tel-Aviv University
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Abstract

Given three variables, x, y, z, univariate selection on x, usually reduces the correlation ry z. However, in some cases, when rx y or rx z assumes extreme values, ry z may increase. This reversal is explained by comparison to the effects of suppressor variables and predictors of predictability.

Type
Original Paper
Information
Psychometrika , Volume 37 , Issue 1 , March 1972 , pp. 93 - 97
Copyright
Copyright © 1972 The Psychometric Society

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References

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