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Item Selection by Means of a Maximizing Function

Published online by Cambridge University Press:  01 January 2025

Paul Horst
Paul Horst*
Affiliation:
The Procter and Gamble Company, Cincinnati, Ohio
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Abstract

A new item selection technique is presented which takes into account the intercorrelations of the items as well as their correlations with the criterion. The technique is regarded as superior to comparable techniques in that it is considered to achieve greater economy of time, greater objectivity of procedure, higher validity, and higher reliability. The mathematical theory underlying the method is developed. An approximate solution of the mathematical equations is suggested. An approximation procedure for the complete item selection technique is presented, based on the mathematical solution, but much simpler in procedure. The clerical operations involved in the approximation procedure are outlined and illustrated on a sample worksheet.

Type
Original Paper
Information
Psychometrika , Volume 1 , Issue 4 , December 1936 , pp. 229 - 244
Copyright
Copyright © 1936 The Psychometric Society

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Footnotes

*

Long, John A. and Sandiford, Peter. “The Validation of Test Items”, Bulletin No. 3, Department of Educational Research, University of Toronto.

†

Horst, Paul, “Item Analysis by the Method of Successive Residuals”, Journal of Experimental Education II (March 1934) pp. 254-263.