Impact of a negatively weighted variable on the validity of an aptitude index /
Leland D. Brokow and Helen Tomlinson.

Description

Main Author

Brokaw, Leland D.

Related Names

Tomlinson, Helen, author.
United States. Air Force. Air Research and Development Command.
United States. Wright Air Development Center.
Lackland Air Force Base (Tex.).

Language(s)

English

Published

Lackland Air Force Base, Texas : Personnel Laboratory, Wright Air Development Division, Air Research and Development Command, United States Air Force :

Subjects

Statistics.
Indexing.
Ability > Ability / Testing.

Summary

Evaluation of the impact of a negatively weighted variable as a part of a complete score is made by comparison between the characteristics of such composites and the characteristics of the composites with that variable removed. The validity of the aptitude indexes was increased, but not significantly, by eliminating the negatively weighted element; the correlation between the aptitude indexes was strongly affected. The aptitude indexes, containing the negatively weighted elements, were not appreciably correlated with each other; but the composites, without the negatively weighted elements, were positively intercorrelated. The results strongly support the use of negatively weighted elements in the aptitude indexes of differential classification batteries; they indicate that other purposes are best served by batteries involving only positively weighted elements. This conclusion is pertinent only to aptitude composites whose components all have positive validity.

Note

"January 1960."

Physical Description

iii, 6 pages : tables ; 28 cm.

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