ERIC Number: EJ1025254
Record Type: Journal
Publication Date: 2014
Abstractor: As Provided
Reference Count: 24
An Empirical Investigation of Population Invariance in the Value of Subscores
Sinharay, Sandip; Haberman, Shelby J.
International Journal of Testing, v14 n1 p22-48 2014
Recently there has been an increasing level of interest in subtest scores, or subscores, for their potential diagnostic value. Haberman (2008) suggested a method to determine if a subscore has added value over the total score. Researchers have often been interested in the performance of subgroups--for example, those based on gender or ethnicity--on subtests. Several researchers found that the difference in performance between the gender-based subgroups varied over the different subtests. In this article, we examine whether the added values of the subscores vary between subgroups using data from several operational tests, including an international English proficiency test. For these data sets, the added values of the subscores occasionally vary over the subgroups, but the added values of the augmented subscores are invariant over the subgroups.
Descriptors: Scores, Achievement Tests, Language Tests, English (Second Language), Licensing Examinations (Professions), Correlation, Robustness (Statistics), Comparative Analysis, Population Groups, Sex, Ethnicity, Language, Test Theory
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A