|
|
|
Object |
 |
|
A comparison of equating/linking using t... - Document (1 M) |
|
| Author |
Tian, Feng |
| Title |
A comparison of equating/linking using the Stocking-Lord method and concurrent calibration with mixed-format tests in the non-equivalent groups common-item design under IRT |
| Date created |
2011 |
| Abstract |
There has been a steady increase in the use of mixed-format tests, that is, tests consisting of both multiple-choice items and constructed-response items in both classroom and large-scale assessments. This calls for appropriate equating methods for such tests. As Item Response Theory (IRT) has rapidly become mainstream as the theoretical basis for measurement, different equating methods under IRT have also been developed. This study investigated the performances of two IRT equating methods using simulated data: linking following separate calibration (the Stocking-Lord method) and the concurrent calibration. The findings from this study show that the concurrent calibration method generally performs better in recovering the item parameters and more importantly, the concurrent calibration method produces more accurate estimated scores than linking following separate calibration. Limitations and directions for future research are discussed. |
| Use Restrictions |
I hereby allow Boston College to include and preserve my dissertation/thesis in electronic form in the Boston College Institutional Repository, which shall include the right to publicly post my dissertation/thesis on the World Wide Web. I will retain copyright ownership, but I grant to Boston College the non-exclusive right to copy, distribute, and publicly display my dissertation/thesis in any form as may be necessary or convenient in the future as file formats, storage media, and distribution mechanisms evolve. |
| Subject |
Equating |
|
IRT |
|
Mixed-format tests |
| Publisher |
Boston College |
| Link to Item |
2345/2370 |
| Thesis Advisor |
Ludlow, Larry |
| Degree Name |
PhD |
| Degree Grantor |
Boston College. Lynch School of Education. |
| Sys. No. |
000011974 |
| Related collections |
|
|
