search

Advanced Search

Ariadne Pfad:

Inhalt

details

Title
Practical significance of item misfit in educational assessments
Authors
SourceApplied psychological measurement 41 (2017) 5, S. 388-400 ZDB
Document  (478 KB)
License of the document In copyright
Keywords (German)
sub-discipline
Document typeArticle (journal)
LanguageEnglish
Year of creation
review statusPeer-Reviewed
Abstract (English):Testing item fit is an important step when calibrating and analyzing item response theory (IRT)-based tests, as model fit is a necessary prerequisite for drawing valid inferences from estimated parameters. In the literature, numerous item fit statistics exist, sometimes resulting in contradictory conclusions regarding which items should be excluded from the test. Recently, researchers argue to shift the focus from statistical item fit analyses to evaluating practical consequences of item misfit. This article introduces a method to quantify potential bias of relationship estimates (e.g., correlation coefficients) due to misfitting items. The potential deviation informs about whether item misfit is practically significant for outcomes of substantial analyses. The method is demonstrated using data from an educational test. (DIPF/Orig.)
Statistics
Checksums
Date of publication08.08.2018
CitationKöhler, Carmen; Hartig, Johannes: Practical significance of item misfit in educational assessments - In: Applied psychological measurement 41 (2017) 5, S. 388-400 - URN: urn:nbn:de:0111-pedocs-156084 - DOI: 10.25656/01:15608; 10.1177/0146621617692978
export files

share content at social platforms