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Details for article 3 of 3 found articles
| Title: |
The Consistency of Student Proficiency Classifications Under Competing IRT Models |
| Author: |
Stone, Clement A. Weissman, Alexander Lane, Suzanne |
| Appeared in: |
Educational assessment |
| Paging: | Volume 10 (2005) nr. 2 pages 125-146 |
| Year: |
2005-05-01 |
| Contents: |
States are implementing statewide assessment programs that classify students into proficiency levels that reflect state-defined performance standards. In an effort to provide support for score interpretations, this study examined the consistency of classifications based on competing item response theory (IRT) models for data from a state assessment program. Classification of students into proficiency levels was compared based on a 1-parameter vs. a 3-parameter IRT model. Despite an overall high level of agreement between classifications based on the 2 models, systematic differences were observed. Under the 1-parameter model, proficiency was underestimated for low proficiency classifications but overestimated for upper proficiency classifications. This resulted in higher "Below Basic" and "Advanced" classifications under 1-parameter vs. 3-parameter IRT applications. Implications of these differences are discussed. |
| Publisher: |
Routledge |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 3 of 3 found articles
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