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Expected Equating Error Resulting From Incorrect Handling of Item Parameter Drift Among the Common Items

机译:常见项目中项目参数漂移处理不当导致的预期均等误差

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摘要

Incorrect handling of item parameter drift during the equating process can result in equating error. If the item parameter drift is due to construct-irrelevant factors, then inclusion of these items in the estimation of the equating constants can be expected to result in equating error. On the other hand, if the item parameter drift is related to the construct being measured, then removal of those items from the estimation of the equating constants can be expected to result in equating error. The effect of incorrect handling of item parameter drift on equating has been examined via simulation studies and other methods by a number of authors with mixed results. In this article, this effect is assessed by estimating the expected equating error under the assumptions that the three-parameter item response theory model is used for calibration-equating.
机译:在均衡过程中对项目参数漂移的不正确处理可能会导致均衡误差。如果项参数漂移是由于与构造无关的因素引起的,则可以预期将这些项包含在等值常数的估计中会导致等值误差。另一方面,如果项目参数漂移与被测量的构造有关,则可以期望从等式常数的估计中去除那些项目导致等式误差。许多作者通过模拟研究和其他方法研究了错误处理项目参数漂移对均衡的影响,结果各不相同。在本文中,通过在三参数项响应理论模型用于校准均衡的假设下,通过估计预期的等效误差来评估这种效果。

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