Differential item functioningDIFIRTStressCoping stressPsychometryThis study examined the Item Response Theory (IRT) method with statistical analysis to determine Differential Item Functioning (DIF) between men and women on the Ways of Coping Checklist (WOCC) Instruments revised by Vitaliano, Russo, Carr,...
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 this article, we discuss the important decisions that affect investigations of differential item functioning (DIF) such as choice of method, sample size, effect size criteria, conditioning variable, purification, DIF amplification, DIF cancellation, and research designs for evaluating DIF. Our ...
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 ...
regDIF: Regularized Differential Item Functioning This R package performs regularization of differential item functioning (DIF) parameters in item response theory (IRT) models using a penalized expectation-maximization algorithm.Version 1.1.0 FeaturesregDIF can:...
To determine whether differential item functioning (DIF) was present in the EuroQol five-dimensional questionnaire (EQ-5D) used in cancer (non–small cell lung cancer and prostate cancer). Methods The Partial Credit Model was applied to the three-level version of the EQ-5D with data obtained ...
Differential item functioning analysesThis article briefly describes the main procedures for performing differential item functioning (DIF) analyses and points out some of the statistical and extra-statistical implications of these methods. Research findings on the sources of DIF, including those associated...
DIF项目功能差异 1.DETECTION OFDIFFERENTIAL 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 ofDIFin 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...
Differential item functioning (DIF), referring to between-group variation in item characteristics above and beyond the group-level disparity in the latent variable of interest, has long been regarded as an important item-level diagnostic. The presence of DIF impairs the fit of the single-group ite...
Item Response Theory (IRT) methodologies wereemployed in order to examine the Myers-Briggs TypeIndicator (MBTI) for differential item functioning (DIF) onthe basis of crossed gender and ethnicity variables. Whitemales were the reference group, and the focal groupswere: black females, black males,...