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首页> 外文期刊>Journal of speech, language, and hearing research: JSLHR >Empirical Evaluation of Computer-Adaptive Alternate Short Forms for the Assessment of Anomia Severity
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Empirical Evaluation of Computer-Adaptive Alternate Short Forms for the Assessment of Anomia Severity

机译：计算机适应性替代性短语的实证评价，用于评估异常严重程度

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Purpose: The purpose of this study was to verify the equivalence of 2 alternate test forms with nonoverlapping content generated by an item response theory (IRT)-based computer-adaptive test (CAT). The Philadelphia Naming Test (PNT; Roach, Schwartz, Martin, Grewal, & Brecher, 1996) was utilized as an item bank in a prospective, independent sample of persons with aphasia. Method: Two alternate CAT short forms of the PNT were administered to a sample of 25 persons with aphasia who were at least 6 months postonset and received no treatment for 2 weeks before or during the study. The 1 st session included administration of a 30-item PNT-CAT, and the 2nd session, conducted approximately 2 weeks later, included a variable-length PNT-CAT that excluded items administered in the 1st session and terminated when the modeled precision of the ability estimate was equal to or greater than the value obtained in the 1st session. The ability estimates were analyzed in a Bayesian framework. Results: The 2 test versions correlated highly (r = .89) and obtained means and standard deviations that were not credibly different from one another. The correlation and error variance between the 2 test versions were well predicted by the IRT measurement model. Discussion: The results suggest that IRT-based CAT alternate forms may be productively used in the assessment of anomia. IRT methods offer advantages for the efficient and sensitive measurement of change over time. Future work should consider the potential impact of differential item functioning due to person factors and intervention-specific effects, as well as expanding the item bank to maximize the clinical utility of the test.
机译：目的：本研究的目的是验证2个替代测试表格的等价性，其中包含由项目响应理论（IRT）的基于计算机自适应测试（CAT）产生的非传播内容。费城命名试验（PNT;罗赫，施瓦茨，马丁，葡萄牙，＆Brecher，1996）被用作潜在的独立人物样本的商品银行，具有失语症。方法：将两种替代的猫短形式的PNT施用于25人的异常，其中至少6个月，在研究前或期间没有治疗2周或期间。第1次SENA会话包括约2周后的30项PNT-CAT的管理，包括一个可变长度的PNT-CAT，其中排除在第1次会议中管理的项目，并在模型精度时终止能力估计等于或大于第1次会议中获得的值。在贝叶斯框架中分析了能力估算。结果：2测试版本高度（r = .89）和获得的手段和标准偏差，这些方法和标准偏差并不可靠地彼此不同。 IRT测量模型很好地预测了2个测试版本之间的相关性和误差方差。讨论：结果表明，基于IRT的CAT替代形式可以高效地用于评估异常。 IRT方法提供了高效敏感的变化测量的优势。未来的工作应考虑由于人物因素和干预特定效果的差异项目功能的潜在影响，以及扩展物品银行以最大限度地提高测试的临床效用。

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