REFINEMENT OF A BIAS-CORRECTION PROCEDURE FOR THE WEIGHTED LIKELIHOOD ESTIMATOR OF ABILITY
نویسندگان
چکیده
منابع مشابه
Refinement of a Bias- Correction Procedure for the Weighted Likelihood Estimator of Ability
In practical applications of item response theory (IRT), item parameters are usually estimated first from a calibration sample. After treating these estimates as fixed and known, ability parameters are then estimated. However, the statistical inferences based on the estimated abilities can be misleading if the uncertainty of the item parameter estimates is ignored. Instead, estimated item param...
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ژورنال
عنوان ژورنال: ETS Research Report Series
سال: 2007
ISSN: 2330-8516
DOI: 10.1002/j.2333-8504.2007.tb02065.x