Reliability of Scaled Scores IRT
- Author(s):
- Haberman, Shelby J.
- Publication Year:
- 2008
- Report Number:
- RR-08-70
- Source:
- ETS Research Report
- Document Type:
- Report
- Page Count:
- 9
- Subject/Key Words:
- Item Response Theory (IRT), Variance, Item Sets, Partial Credit Model, Two-Parameter Logistic Model, Reliability
Abstract
The reliability of a scaled score can be computed by use of item response theory. Estimated reliability can be obtained even if the item response model selected is not valid.
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- http://dx.doi.org/10.1002/j.2333-8504.2008.tb02156.x