A psychometric investigation into the use of an adaptation of the Ghiselli Predictability Index in personnel selection
Date
2005
Authors
Theron, Callie
Twigge, Liesle
Steel, Henry
Meiring, Deon
Journal Title
Journal ISSN
Volume Title
Publisher
AOSIS OpenJournals
Abstract
The magnitudes of validity coefficients typically encountered in validation studies are disappointingly low. Validity
coefficients typically fall below 0,50 and only very seldom reach values as high as 0,70. Numerous possibilities have
been considered on how to affect an increase in the magnitude of the validity coefficient. A thought-provoking
alternative to the usual multiple-regression based attempts may be found in the work of Ghiselli (1956, 1960a,
1960b). The objective of this article is to propose and evaluate a modification to the original Ghiselli procedure.
Encouragingly positive results were obtained. Recommendations for future research are made.
Description
Original publication is available at http://www.sajip.co.za
Keywords
validity coefficients, validation studies
Citation
Twigge, L., Theron, C., Steel, h. & Meiring, D. 2005. A psychometric investigation into the use of an adaptation of the Ghiselli Predictability Index in personnel selection. SA Journal of Industrial Psychology, 31(1), 18-30.