Item Response Theory Modeling of the Verb Naming Test.
Item Response Theory Modeling of the Verb Naming Test.
复制标题
动词命名测试的项目反应理论建模。
DOI：
10.1044/2023_jslhr-22-00458
复制
发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Hula,WilliamD
中科院分区：
文献类型：
--
作者：
Fergadiotis,Gerasimos;Casilio,Marianne;Dickey,MichaelWalsh;Steel,Stacey;Nicholson,Hannele;Fleegle,Mikala;Swiderski,Alexander;Hula,WilliamD
项目反应理论（IRT）是一种现代心理测量学理论框架，与经典测试理论相比具有许多优点。IRT已成功地用于模拟失语症患者在命名障碍测试中的表现;然而，迄今为止，所有的努力都集中在名词产生的准确性上。本研究的目的是评估是否动词重复测试（VNT），一个突出的测试动作命名，可以成功地模仿下IRT和评估其reliability.MethodWe使用的反应VNT从107个人与慢性失语症从AphasiaBank。单维性和局部独立性是IRT建模的两个前提假设，分别用因子分析和Yen的Q3统计量（Yen，1984）进行了评估。通过嵌套模型比较和实际使用所得IRT衍生评分的相关性，在统计学上评价了测试项目之间的同等区分假设。最后，内部的一致性，边际和经验的可靠性，和条件reliability evaluated.ResultsThe VNT被认为是足够的一维与大多数项目对表现出足够的本地独立性。一个IRT模型，其中项目歧视被限制为平等证明适合相当于一个模型，其中唯一的歧视参数估计为每个项目。所有形式的可靠性都很强，在大多数的IRT能力estimates.ConclusionsModeling的VNT使用IRT是可行的，产生的能力估计，是既翔实又可靠。未来的工作是需要量化的IRT下的VNT的有效性，并确定在何种程度上它的措施相同的结构，作为其他失范测试.补充材料https：doi.org/10.23641/asha.22329235
PurposeItem response theory (IRT) is a modern psychometric framework with several advantageous properties as compared with classical test theory. IRT has been successfully used to model performance on anomia tests in individuals with aphasia; however, all efforts to date have focused on noun production accuracy. The purpose of this study is to evaluate whether the Verb Naming Test (VNT), a prominent test of action naming, can be successfully modeled under IRT and evaluate its reliability.MethodWe used responses on the VNT from 107 individuals with chronic aphasia from AphasiaBank. Unidimensionality and local independence, two assumptions prerequisite to IRT modeling, were evaluated using factor analysis and Yen'sQ3statistic (Yen, 1984), respectively. The assumption of equal discrimination among test items was evaluated statistically via nested model comparisons and practically by using correlations of resulting IRT-derived scores. Finally, internal consistency, marginal and empirical reliability, and conditional reliability were evaluated.ResultsThe VNT was found to be sufficiently unidimensional with the majority of item pairs demonstrating adequate local independence. An IRT model in which item discriminations are constrained to be equal demonstrated fit equivalent to a model in which unique discrimination parameters were estimated for each item. All forms of reliability were strong across the majority of IRT ability estimates.ConclusionsModeling the VNT using IRT is feasible, yielding ability estimates that are both informative and reliable. Future efforts are needed to quantify the validity of the VNT under IRT and determine the extent to which it measures the same construct as other anomia tests.Supplemental Materialhttps://doi.org/10.23641/asha.22329235