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ERIC Number: EJ779656
Record Type: Journal
Publication Date: 2007
Pages: 8
Abstractor: Author
Reference Count: 20
ISSN: ISSN-0731-1745
Subscores Based on Classical Test Theory: To Report or Not to Report
Sinharay, Sandip; Haberman, Shelby; Puhan, Gautam
Educational Measurement: Issues and Practice, v26 n4 p21-28 Win 2007
There is an increasing interest in reporting subscores, both at examinee level and at aggregate levels. However, it is important to ensure reasonable subscore performance in terms of high reliability and validity to minimize incorrect instructional and remediation decisions. This article employs a statistical measure based on classical test theory that is conceptually similar to the test reliability measure and can be used to determine when subscores have any added value over total scores. The usefulness of subscores is examined both at the level of the examinees and at the level of the institutions that the examinees belong to. The suggested approach is applied to two data sets from a basic skills test. The results provide little support in favor of reporting subscores for either examinees or institutions for the tests studied here.
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A