项目聚焦树用于区分项目功能中的项目识别
Item focussed Trees for the Identification of Items in Differential Item Functioning
摘要：
提出了一种利用递归划分技术识别差异项目功能（DIF）的新方法。我们假设扩展的Rasch模型，允许DIF被诱导的任意数量的协变量为每个项目。在项目级别上的递归划分导致每个项目一棵树，并导致同时选择诱发DIF的项目和变量。对于每个项目，可以检测具有不同项目难度的受试者组，由未预先指定的特征组合定义。提出了一种基于排列测试的算法。各种模拟研究，包括与传统的方法来识别项目与DIF的比较，显示了该方法的适用性和竞争力的表现。两个应用程序说明了新方法的实用性和优点。
英文摘要：
A new method for the identification of differential item functioning (DIF) by using recursive partitioning techniques is proposed. We assume an extension of the Rasch model that allows for DIF being induced by an arbitrary number of covariates for each item. Recursive partitioning on the item level results in one tree for each item and leads to simultaneous selection of items and variables that induce DIF. For each item it is possible to detect groups of subjects with different item difficulties, defined by combinations of characteristics that are not pre-specified. An algorithm is proposed that is based on permutation tests. Various simulation studies, including the comparison with traditional approaches to identify items with DIF, show the applicability and the competitive performance of the method. Two applications illustrate the usefulness and the advantages of the new method.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
