Results 111 to 120 of about 41,119 (165)
Some of the next articles are maybe not open access.
Differential Item Functioning in rehabilitation research
Work, 2010Measurement is critical to Rehabilitation practice and research. To provide effective services and to have valid research results, it is imperative to have valid and reliable assessment tools. Differential Item Functioning (DIF) is a statistical procedure which better enables us to assess both the validity and the results of measurement instruments. As
Dent, Gitchel +2 more
openaire +2 more sources
Differential Item Functioning Analysis Using Rasch Item Information Functions
International Journal of Testing, 2009Differential item functioning (DIF) analysis is a statistical technique used for ensuring the equity and fairness of educational assessments. This study formulates a new DIF analysis method using the information similarity index (ISI). ISI compares item information functions when data fits the Rasch model.
Adam E. Wyse, Raymond Mapuranga
openaire +1 more source
A 37-item shoulder functional status item pool had negligible differential item functioning
Journal of Clinical Epidemiology, 2006Measures of shoulder function may differ by dominance of affected shoulder, surgical history, gender, or race. We present a technique for determining whether observed differences in function between groups are due to biased test items or real differences in function.Four hundred patients who were receiving rehabilitation for a variety of shoulder ...
Paul K, Crane +3 more
openaire +2 more sources
Differential Item Functioning in Attitude Assessment
Evaluation Practice, 1997Differential item functioning (DIF) is not often seen in the literature on attitude assessment. A brief discussion of DIF and methods of implementation is followed by an illustrative example from a program evaluation, using an attitude-towards-science scale with 1550 children in grades one through six.
openaire +1 more source
Schizotypy, marijuana, and differential item functioning
Human Psychopharmacology: Clinical and Experimental, 2006AbstractAt least five studies report elevated schizotypy scores in cannabis users. The current research confirms higher schizotypy scores in regular cannabis users. Nevertheless, further analyses reveal that select items on the brief version of the Schizotypal Personality Questionnaire do not function comparably in current and former users.
openaire +2 more sources
Estimating the Importance of Differential Item Functioning
Journal of Educational and Behavioral Statistics, 1995Several methods have been proposed to detect differential item functioning (DIF), an item response pattern in which members of different demographic groups have different conditional probabilities of answering a test item correctly, given the same level of ability. In this article, the mixture index of fit, proposed by Rudas, Clogg, and Lindsay (1994)
Tamás Rudas, Rebecca Zwick
openaire +1 more source
5 Differential Item Functioning and Item Bias
2006Publisher Summary This chapter presents a description of many of the commonly employed methods in the detection of item bias. Because much of the statistical detection of item bias makes the use of differential item functioning (DIF) procedures, the majority of this chapter focuses on the description of statistical methods for the analysis of DIF ...
Randall D. Penfield, Gregory Camilli
openaire +1 more source
International Journal of Testing, 2015
Raju, van der Linden, and Fleer (1995) introduced a framework for differential functioning of items and tests (DFIT) for unidimensional dichotomous models. Since then, DFIT has been shown to be a quite versatile framework as it can handle polytomous as well as multidimensional models both at the item and test levels.
T. C. Oshima, Keith Wright, Nick White
openaire +1 more source
Raju, van der Linden, and Fleer (1995) introduced a framework for differential functioning of items and tests (DFIT) for unidimensional dichotomous models. Since then, DFIT has been shown to be a quite versatile framework as it can handle polytomous as well as multidimensional models both at the item and test levels.
T. C. Oshima, Keith Wright, Nick White
openaire +1 more source
Screening Test Items for Differential Item Functioning
Journal of Educational and Behavioral Statistics, 2014A method for medical screening is adapted to differential item functioning (DIF). Its essential elements are explicit declarations of the level of DIF that is acceptable and of the loss function that quantifies the consequences of the two kinds of inappropriate classification of an item.
openaire +1 more source
Assessment of differential item functioning.
Journal of applied measurement, 2009This study addresses several important issues in assessment of differential item functioning (DIF). It starts with the definition of DIF, effectiveness of using item fit statistics to detect DIF, and linear modeling of DIF in dichotomous items, polytomous items, facets, and testlet-based items.
openaire +2 more sources