Investigation of Equating Error in Tests with Differential Item Functioning

In this study purposes to indicate the effect ofthe number of DIF items and the distribution of DIF items in these forms, whichbe equalized on equating error. Mean-mean, mean-standard deviation, Haebara andStocking-Lord Methods used in common item design equal groups as equalizationmethods. The stud...

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Main Authors: Meltem Yurtçu, Cem Oktay Güzeller
Format: Article
Language:English
Published: izzet kara 2018-01-01
Series:International Journal of Assessment Tools in Education
Subjects:
Online Access:https://dergipark.org.tr/tr/download/article-file/344211
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author Meltem Yurtçu
Cem Oktay Güzeller
author_facet Meltem Yurtçu
Cem Oktay Güzeller
author_sort Meltem Yurtçu
collection DOAJ
description In this study purposes to indicate the effect ofthe number of DIF items and the distribution of DIF items in these forms, whichbe equalized on equating error. Mean-mean, mean-standard deviation, Haebara andStocking-Lord Methods used in common item design equal groups as equalizationmethods. The study included six different simulation conditions. The conditionswere compared according to the number of DIF items and the distribution of DIFitems on tests. The results illustrated that adding DIF items to tests wereequated caused an increase in the errors obtained by equating methods. We maystate that the change in errors is lowest in characteristic curvetransformation methods, largest in moment methods depending on the situationsin these conditions.
format Article
id doaj-art-e8dc8fa271834a56955a633d7c839451
institution OA Journals
issn 2148-7456
language English
publishDate 2018-01-01
publisher izzet kara
record_format Article
series International Journal of Assessment Tools in Education
spelling doaj-art-e8dc8fa271834a56955a633d7c8394512025-08-20T02:12:58Zengizzet karaInternational Journal of Assessment Tools in Education2148-74562018-01-0151505710.21449/ijate.316420618Investigation of Equating Error in Tests with Differential Item FunctioningMeltem Yurtçu0Cem Oktay Güzeller1Hacettepe UniversityAKDENİZ ÜNİVERSİTESİIn this study purposes to indicate the effect ofthe number of DIF items and the distribution of DIF items in these forms, whichbe equalized on equating error. Mean-mean, mean-standard deviation, Haebara andStocking-Lord Methods used in common item design equal groups as equalizationmethods. The study included six different simulation conditions. The conditionswere compared according to the number of DIF items and the distribution of DIFitems on tests. The results illustrated that adding DIF items to tests wereequated caused an increase in the errors obtained by equating methods. We maystate that the change in errors is lowest in characteristic curvetransformation methods, largest in moment methods depending on the situationsin these conditions.https://dergipark.org.tr/tr/download/article-file/344211equation errordifirt equation methodslarge scale exams
spellingShingle Meltem Yurtçu
Cem Oktay Güzeller
Investigation of Equating Error in Tests with Differential Item Functioning
International Journal of Assessment Tools in Education
equation error
dif
irt equation methods
large scale exams
title Investigation of Equating Error in Tests with Differential Item Functioning
title_full Investigation of Equating Error in Tests with Differential Item Functioning
title_fullStr Investigation of Equating Error in Tests with Differential Item Functioning
title_full_unstemmed Investigation of Equating Error in Tests with Differential Item Functioning
title_short Investigation of Equating Error in Tests with Differential Item Functioning
title_sort investigation of equating error in tests with differential item functioning
topic equation error
dif
irt equation methods
large scale exams
url https://dergipark.org.tr/tr/download/article-file/344211
work_keys_str_mv AT meltemyurtcu investigationofequatingerrorintestswithdifferentialitemfunctioning
AT cemoktayguzeller investigationofequatingerrorintestswithdifferentialitemfunctioning