A Comparison of Raw-to-Scale Conversion Consistency Between Single- and Multiple-Linking Using a Nonequivalent Groups Anchor Test Design GBA
- Author(s):
- Liu, Jinghua; Guo, Hongwen; Dorans, Neil J.
- Publication Year:
- 2014
- Report Number:
- RR-14-13
- Source:
- ETS Research Report
- Document Type:
- Report
- Page Count:
- 11
- Subject/Key Words:
- Scale Drift, Raw Scores, Scale Scores, Consistency, Scale Linking, Anchor Tests, Score Comparability
Abstract
Overall, equating based on multiple linking designs shows the promise of producing more consistent results and preventing scale drift. We recommend that testing programs and practitioners consider the use of multiple linking whenever possible.
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- http://dx.doi.org/10.1002/ets2.12014