Net and Global Differential Item Functioning in PISA Polytomously Scored Science Items: Application of the Differential Step Functioning Framework

Autor/inn/en	Akour, Mutasem; Sabah, Saed; Hammouri, Hind
Titel	Net and Global Differential Item Functioning in PISA Polytomously Scored Science Items: Application of the Differential Step Functioning Framework
Quelle	In: Journal of Psychoeducational Assessment, 33 (2015) 2, S.166-176 (11 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0734-2829
DOI	10.1177/0734282914541337
Schlagwörter	Test Bias; Science Tests; Test Items; Scoring; International Programs; Testing Programs; French; English; Translation; Foreign Countries; Denmark; France; Slovakia; United States; Program for International Student Assessment + Suchen Sie Ihr Suchwort? Testkritik; Test content; Testaufgabe; Bewertung; Französisch; English language; Englisch; Ausland; Dänemark; Frankreich; Slowakei; USA
Abstract	The purpose of this study was to apply two types of Differential Item Functioning (DIF), net and global DIF, as well as the framework of Differential Step Functioning (DSF) to real testing data to investigate measurement invariance related to test language. Data from the Program for International Student Assessment (PISA)-2006 polytomously scored science items for four countries with different test languages were used, where French and English represented the reference languages. The findings showed that many items exhibited both types of DIF, although, in most cases, the results were inconsistent for the two source languages. In addition, net and global DIF tests did not always yield the same results depending on the DSF effect pattern. Furthermore, the DSF analysis provided valuable information over and above that provided by the net DIF analysis concerning the nature and the location of the DIF effect. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01