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Assessing differential functioning in a satisfaction scale.

W C Collins·N S Raju·J E Edwards
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Abstract

In this study, an item response theory-based differential functioning of items and tests (DFIT) framework (N. S. Raju, W. J. van der Linden, & P. F. Fleer, 1995) was applied to a Likert-type scale. Several differential item functioning (DIF) analyses compared the item characteristics of a 10-item satisfaction scale for Black and White examinees and for female and male examinees. F. M. Lord's (1980) chi-square and the extended signed area (SA) measures were also used. The results showed that the DFIT indices consistently performed in the expected manner. The results from Lord's chi-square and the SA procedures were somewhat varied across comparisons. A discussion of these results along with an illustration of an item with significant DIF and suggestions for future DIF research are presented.

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Black or African AmericanCross-Cultural ComparisonFemaleHumansJob SatisfactionMaleMilitary PersonnelPsychometricsSex FactorsUnited StatesWhite PeopleComparative StudyJournal Article

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W C Collins, N S Raju, J E Edwards. 2000. Assessing differential functioning in a satisfaction scale.. https://doi.org/10.1037/0021-9010.85.3.451

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