Effect of Item Response Theory (IRT) Model Selection on Testlet-Based Test Equating IRT OSE
- Author(s):
-
Cao, Yi;
Lu, Ru;
Tao, Wei
- Publication Year:
- 2014
- Report Number:
-
RR-14-19
- Source:
-
ETS Research Report
- Document Type:
- Report
- Page Count:
- 17
- Subject/Key Words:
-
Item Response Theory (IRT),
Testlets,
Local Item Dependence,
Dichotomous Items,
Item Response Models,
Polytomous Items,
Testlet Models,
True-Score Equating Method,
Observed-Score Equating (OSE)
Abstract
And the number-correct equating using the 2PL is robust to the violation of local item independence.
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