Comparing Different IRT Equating Methods Based on Test Equity Property for Mixed-Format Test Equating
JOURNAL OF MEASUREMENT AND EVALUATION IN EDUCATION AND PSYCHOLOGY-EPOD, vol.6, no.1, pp.117-125, 2015 (ESCI, TRDizin)
- Publication Type: Article / Article
- Volume: 6 Issue: 1
- Publication Date: 2015
- Journal Name: JOURNAL OF MEASUREMENT AND EVALUATION IN EDUCATION AND PSYCHOLOGY-EPOD
- Journal Indexes: Emerging Sources Citation Index (ESCI), TR DİZİN (ULAKBİM)
- Page Numbers: pp.117-125
- Hacettepe University Affiliated: Yes
Abstract
In this study, Item Response Theory (IRT) true-score equating and observed-score equating methods were compared based on preserving test equity property. The data used in this study were 8th grade mathematics test item responses which obtained from booklet 5 and 6 of Trends in International Mathematics and Science Study) (TIMSS) 2011 Turkey sample. Results showed that while IRT true-score equating outperformed IRT observed-score equating in terms preserving first-order equity, however IRT observed-score equating method IRT true-score equating in terms of second order equity property.