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El Masri, Yasmine H.; Andrich, David – Applied Measurement in Education, 2020
In large-scale educational assessments, it is generally required that tests are composed of items that function invariantly across the groups to be compared. Despite efforts to ensure invariance in the item construction phase, for a range of reasons (including the security of items) it is often necessary to account for differential item…
Descriptors: Models, Goodness of Fit, Test Validity, Achievement Tests
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Eklöf, Hanna; Pavešic, Barbara Japelj; Grønmo, Liv Sissel – Applied Measurement in Education, 2014
The purpose of the study was to measure students' reported test-taking effort and the relationship between reported effort and performance on the Trends in International Mathematics and Science Study (TIMSS) Advanced mathematics test. This was done in three countries participating in TIMSS Advanced 2008 (Sweden, Norway, and Slovenia), and the…
Descriptors: Mathematics Tests, Cross Cultural Studies, Foreign Countries, Correlation