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A Note on the Bias of UCON Item Parameter Estimation in the Rasch Model |
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| Authors: | Dato N. M. de Gruijter |
| Affiliation: | Educational Research Center, University of Leiden |
| Abstract: | Divgi (1986) demonstrated that the bias of UCON item parameter estimates is not removed by the factor (n − 1)/n. Andrich (1989) argued in this journal that the demonstration was faulty. In this note a complete proof of Divgfs conclusion is presented. |
| Keywords: | |