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The Interpretation of a Test Validity Coefficient in Terms of Increased Efficiency of a Selected Group of Personnel

Published online by Cambridge University Press:  01 January 2025

Marion W. Richardson
Marion W. Richardson*
Affiliation:
Personnel Research, Classification and Replacement Branch Adjutant General's Office, Washington, D. C.
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Abstract

The predictive efficiency of a test used to select personnel is defined in terms of total effectiveness of the group thus selected, as compared with chance selection. The formula developed requires the use of an estimate of the ratio of average effectiveness of men selected to the average effectiveness of men not selected by the test. The predictive efficiency of the test varies directly with the magnitude of this ratio and also directly with the percentage rejected.

Type
Original Paper
Information
Psychometrika , Volume 9 , Issue 4 , December 1944 , pp. 245 - 248
Copyright
Copyright © 1944 The Psychometric Society

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References

* Taylor, H. C. and Russell, J. T. The relationship of validity coefficients to the practical effectiveness of tests in selection: Discussion and tables. J. appl. Psychol., 13, 1939, 565-578.