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Effect Size Measures for Multilevel Models: Definition, Interpretation, and TIMSS Example
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Lorah, Julie – Large-scale Assessments in Education, 2018
Effect size reporting is crucial for interpretation of applied research results and for conducting meta-analysis. However, clear guidelines for reporting effect size in multilevel models have not been provided. This report suggests and demonstrates appropriate effect size measures including the ICC for random effects and standardized regression…
Descriptors: Effect Size, Hierarchical Linear Modeling, Definitions, Regression (Statistics)
What Works Where? The Relationship between Instructional Variables and Schools' Mean Scores in Mathematics and Science in Low-, Medium-, and High-Achieving Countries
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Zuzovsky, Ruth – Large-scale Assessments in Education, 2013
Background: The association between frequent use of certain instructional practices in mathematics and science and learning outcomes in schools in low-, medium-, and high-achieving countries is the focus of this study. It not only looks at teaching practices "that work" (positively associated with achievement) but whether they…
Descriptors: Mathematics Instruction, Science Instruction, Teaching Methods, Mathematics Achievement