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Establishing Effect Size Guidelines for Interpreting the Results of Differential Bundle Functioning Analyses Using SIBTEST

机译：建立使用SIBTEST解释差分束功能分析结果的效应量指南

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摘要

The purpose of this simulation study was to establish general effect size guidelines for interpreting the results of differential bundle functioning (DBF) analyses using simultaneous item bias test (SIBTEST). Three factors were manipulated: number of items in a bundle, test length, and magnitude of uniform differential item functioning (DIF) against the focal group in each item in a bundle. A secondary purpose was to validate the current effect size guidelines for interpreting the results of single-item DIF analyses using SIBTEST. The results of this study clearly demonstrate that ability estimation bias can only be attributed to DIF or DBF when a large number of items in a bundle are functioning differentially against focal examinees in a small way or a small number of items are functioning differentially against focal examinees in a large way. In either of these situations, the presence of DIF or DBF should be a cause for concern because it would lead one to erroneously believe that distinct groups differ in ability when in fact they do not.
机译：本模拟研究的目的是建立通用效应大小准则，以解释使用同时项目偏倚测试（SIBTEST）进行的差异束功能（DBF）分析的结果。操纵了三个因素：一捆中的物品数量，测试长度以及针对一捆中每个物品的焦点组的统一差分功能（DIF）的大小。第二个目的是验证使用SIBTEST解释单项DIF分析结果的当前效应大小指南。这项研究的结果清楚地表明，能力估计偏差只能归因于当一捆中的大量物品与焦点考生之间的差异较小时，或者少数物品与焦点考生之间的差异差异时，DIF或DBF。在很大程度上。在这两种情况下，DIF或DBF的存在都应该引起人们的关注，因为它会导致人们错误地认为不同群体的能力不同，而事实上却没有。

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