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Evaluating the Accuracy of the Empirical Item Characteristic Curve Preequating Method in the Presence of Test Speededness

机译:存在测试速度时评估经验项特征曲线预先确定方法的准确性

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摘要

This study aimed to assess the accuracy of the empirical item characteristic curve (EICC) preequating method given the presence of test speededness. The simulation design of this study considered the proportion of speededness, speededness point, speededness rate, proportion of missing on speeded items, sample size, and test length. After crossing all of the manipulated factors and then normalizing the evaluation criteria (bias and root mean square difference [ ]) with regard to test length, the results revealed that (1) when test speededness was present, conversions from the EICC preequating method tended to be positively distorted; (2) no practically meaningful moderation effect associated with sample size was found on the relationship between test speededness and the accuracy of EICC preequating; and (3) the location of the speededness point was the driving factor in terms of its impact on the accuracy of EICC preequating. Implications and suggestions were discussed.
机译:这项研究旨在评估存在测试速度的情况下经验项目特征曲线(EICC)预先确定方法的准确性。这项研究的模拟设计考虑了速度的比例,速度点,速度速率,速度项上的缺失项比例,样本大小和测试长度。跨越所有可操作因素,然后对测试长度进行归一化评估标准(偏差和均方根差[])后,结果表明:(1)当测试速度提高时,EICC预先确定方法的转换倾向于积极扭曲; (2)在测试速度与EICC预先确定的准确性之间的关系上,没有发现与样本量相关的实际有意义的调节作用; (3)速度点的位置是影响EICC预选精度的驱动因素。讨论和建议。

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