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The Area between Two Item Characteristic Curves

Published online by Cambridge University Press:  01 January 2025

Nambury S. Raju
Nambury S. Raju*
Affiliation:
Illinois Institute of Technology
*
Requests for reprints should be sent to Nambury S. Raju, Department of Psychology, Illinois Institute of Technology, Chicago, IL 60616.
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Abstract

Formulas for computing the exact signed and unsigned areas between two item characteristic curves (ICCs) are presented. It is further shown that when thec parameters are unequal, the area between two ICCs is infinite. The significance of the exact area measures for item bias research is discussed.

Keywords

item response theoryitem biasitem characteristic curves

Information

Type
Original Paper
Information
Psychometrika , Volume 53 , Issue 4 , December 1988, pp. 495 - 502
Copyright
Copyright © 1988 The Psychometric Society

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Footnotes

The author expresses his appreciation to Jeffrey A. Slinde, Stephen Steinhaus, Audrey Qualls-Payne, Ivo Molenaar, and two anonymous reviewers for their very helpful and constructive comments.

References

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