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Sensitivity of a Linear Composite of Predictor Items to differential Item Weighting

Published online by Cambridge University Press:  01 January 2025

William W. Rozeboom
William W. Rozeboom*
Affiliation:
University of Alberta
*
Requests for reprints should be sent to Wm. W. Rozeboom, Department of Psychology, University of Alberta, Edmonton, Alberta, CANADA T6G 2E9.
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Abstract

Many authors have demonstrated for idealized item configurations that equal item weights are often virtually as good for a particular predictive purpose as the item weights that are theoretically optimal. What has not been heretofore clear, however, is what happens to the similarity between weighted and unweighted composites of the same items when the item configuration's variance structure is complex.

Keywords

item weightscomposite predictorsequal-weighting
Type
Original Paper
Information
Psychometrika , Volume 44 , Issue 3 , September 1979 , pp. 289 - 296
Copyright
Copyright © 1979 The Psychometric Society

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