Using Differential Item Functioning to Test for Interrater Reliability in Constructed Response Items

Autor:	Sakine Göçer Şahin, Cindy M. Walker
Rok vydání:	2020
Předmět:	Applied Mathematics Polytomous Rasch model Test theory Test bias Differential item functioning Article Education Classical test theory Test (assessment) Inter-rater reliability Constructed response Statistics Developmental and Educational Psychology Psychology Applied Psychology
Zdroj:	Educ Psychol Meas
ISSN:	1552-3888 0013-1644
DOI:	10.1177/0013164419899731
Popis:	The purpose of this study was to investigate a new way of evaluating interrater reliability that can allow one to determine if two raters differ with respect to their rating on a polytomous rating scale or constructed response item. Specifically, differential item functioning (DIF) analyses were used to assess interrater reliability and compared with traditional interrater reliability measures. Three different procedures that can be used as measures of interrater reliability were compared: (1) intraclass correlation coefficient (ICC), (2) Cohen’s kappa statistic, and (3) DIF statistic obtained from Poly-SIBTEST. The results of this investigation indicated that DIF procedures appear to be a promising alternative to assess the interrater reliability of constructed response items, or other polytomous types of items, such as rating scales. Furthermore, using DIF to assess interrater reliability does not require a fully crossed design and allows one to determine if a rater is either more severe, or more lenient, in their scoring of each individual polytomous item on a test or rating scale.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23f2b8ed45b9d8bee2e2912f05f72612 https://doi.org/10.1177/0013164419899731 Zobrazit plný text záznamu