Descriptor
| Ability | 1 |
| Comparative Analysis | 1 |
| Computation | 1 |
| Item Response Theory | 1 |
| Maximum Likelihood Statistics | 1 |
| Methods | 1 |
| Simulation | 1 |
| Statistical Bias | 1 |
| Test Items | 1 |
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| ETS Research Report Series | 1 |
Author
| Zhang, Jinming | 1 |
Publication Type
| Journal Articles | 1 |
| Numerical/Quantitative Data | 1 |
| Reports - Research | 1 |
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Download full textZhang, Jinming – ETS Research Report Series, 2005
Lord's bias function and the weighted likelihood estimation method are effective in reducing the bias of the maximum likelihood estimate of an examinee's ability under the assumption that the true item parameters are known. This paper presents simulation studies to determine the effectiveness of these two methods in reducing the bias when the item…
Descriptors: Statistical Bias, Maximum Likelihood Statistics, Computation, Ability
