Differential item functioning (DIF) determines if individual test items are operating differently for different groups. The most common way to do this is with item response theory (IRT). For each item, an item characteristic curve (ICC) is developed for each group. If the ICCs are similar, ...
item biasOne of the key techniques researchers use in measurement is to investigate Differential Item Functioning (DIF). In this chapter, we give examples to help define what DIF is and why it is important to understand. Readers are provided with guidance on how to interpret numerous critical ...
In Differential Item Functioning (eds. Holland & Wainer, 1993), Angoff explains that DIF is occurring when an item displays different statistical properties between groups after those groups have been matched on a measure of proficiency. To put it another way, we need to first account for ...
3.The Exploration and Research of Parametric Polytomous Differential Item Functioning Detection Method;多等级试题项目功能差异(DIF)参数方法的检测研究 英文短句/例句 1.DETECTION OF DIFFERENTIAL ITEM FUNCTIONING IN ACHINESE VOCABULARY TEST;汉语词汇测验中的项目功能差异初探 2.Detection of Differential Item Functi...
This secondary data analysis investigated differential item functioning (DIF) in the Short Portable Mental Status Questionnaire (SPMSQ) across demographic subgroups. The study was conducted at an academic primary care group practice on 3,954 patients aged 60 years and older who completed the SPMSQ ...
Differential item functioning (DIF) assessment has been widely applied for decades to ensure test fairness in routine item analysis. However, few studies have investigated, or even noticed, omitted variable bias (OVB) while assessing DIF. As a result, the estimation of DIF e...
item biasRasch analysisItems do not always function equally in different groups (e.g. across genders, languages and cultures). Consequently, where patient-reported outcomes are used and different groups are compared, data should be checked for differential item functioning (DIF). An item that ...
A procedure to detect differential item functioning (DIF) is introduced that is suitable for tests with a cutoff score. DIF is assessed on a limited closed interval of thetas in which a cutoff score falls. How this approach affects the identification of DIF items is demonstrated with real ...
difNLR: Generalized Logistic Regression Models for DIF and DDF Detection Differential item functioning (DIF) and differential distractor functioning (DDF) are important topics in psychometrics, pointing to potential unfairness i... A Hladka,P Martinková - 《R Journal》 被引量: 0发表: 2020年...
DETECTION OF DIFFERENTIAL ITEM FUNCTIONING IN ACHINESE VOCABULARY TEST; 汉语词汇测验中的项目功能差异初探 2. Using Samejima s Graded Response Model,this paper discussed the defection of DIF in Likert-type scales. 该研究以SCL-90量表中的“恐怖”因子为例,采用Samejima等级反应模型(Graded Response Model...