ERIC Number: EJ1374775
Record Type: Journal
Publication Date: 2023
Pages: 19
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0022-0973
EISSN: EISSN-1940-0683
Available Date: N/A
Comparability of TIMSS 2015 Mathematics Test Scores across Country Subgroups
Atar, Burcu; Atalay Kabasakal, Kubra; Kibrislioglu Uysal, Nermin
Journal of Experimental Education, v91 n1 p82-100 2023
The purpose of this study was to evaluate the population invariance of equating functions across country subgroups in TIMSS 2015 mathematics tests in relation to the raw-score distribution, DIF, and DTF. We used equipercentile and IRT observed-score equating methods. The results of the study indicate that there is a relationship between the population invariance and raw-score and skewness differences for both equating methods. The association between the population invariance and the number of DIF items is explicit in the equipercentile equating but not clear in the IRT equating. Furthermore, we have observed that when the number of DIF items is high, if the DTF value is relatively low, the equating errors tend to be moderate to low.
Descriptors: Foreign Countries, Achievement Tests, International Assessment, Mathematics Tests, Elementary Secondary Education, Mathematics Achievement, Comparative Analysis, Item Response Theory
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Publication Type: Journal Articles; Reports - Research
Education Level: Elementary Secondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Turkey; United States; United Kingdom (England); Canada
Identifiers - Assessments and Surveys: Trends in International Mathematics and Science Study
Grant or Contract Numbers: N/A
Author Affiliations: N/A