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ERIC Number: EJ1160401
Record Type: Journal
Publication Date: 2017
Pages: 15
Abstractor: As Provided
ISSN: ISSN-1062-7197
Test Assembly Implications for Providing Reliable and Valid Subscores
Lee, Minji K.; Sweeney, Kevin; Melican, Gerald J.
Educational Assessment, v22 n4 p205-219 2017
This study investigates the relationships among factor correlations, inter-item correlations, and the reliability estimates of subscores, providing a guideline with respect to psychometric properties of useful subscores. In addition, it compares subscore estimation methods with respect to reliability and distinctness. The subscore estimation methods explored in the current study include augmentation based on classical test theory and multidimensional item response theory (MIRT). The study shows that there is no estimation method that is optimal according to both criteria. Augmented subscores show the most improvement in reliability compared to observed subscores but are the least distinct.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A