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Direct linkLee, HyeSun – Applied Measurement in Education, 2018
The current simulation study examined the effects of Item Parameter Drift (IPD) occurring in a short scale on parameter estimates in multilevel models where scores from a scale were employed as a time-varying predictor to account for outcome scores. Five factors, including three decisions about IPD, were considered for simulation conditions. It…
Descriptors: Test Items, Hierarchical Linear Modeling, Predictor Variables, Scores
Mohammadpour, Ebrahim; Shekarchizadeh, Ahmadreza – Educational Psychology, 2015
This paper identifies the amount of variance in mathematics achievement in high- and low-achieving schools that can be explained by school-level factors, while controlling for student-level factors. The data were obtained from 2679 Iranian eighth graders who participated in the 2007 Trends in International Mathematics and Science Study. Of the…
Descriptors: Mathematics Achievement, High Achievement, Low Achievement, Secondary Schools
Byun, Soo-yong; Henck, Adrienne; Post, David – Comparative Education Review, 2014
Most existing research indicates that working students perform more poorly than do full-time students on standardized achievement tests. However, we know there are wide international variations in this gap. This article shows that national and international contexts help to explain the gap in the academic performance between working and nonworking…
Descriptors: Student Employment, Academic Achievement, Middle School Students, Grade 8
Download full textKareshki, Hossein; Hajinezhad, Zahra – Universal Journal of Educational Research, 2014
The purpose of the present study is investigating the correlation between school quality and family socioeconomic background and students' mathematics achievement in the Middle East. The countries in comparison are UAE, Syria, Qatar, Iran, Saudi Arabia, Oman, Lebanon, Jordan, and Bahrain. The study utilized data from IEA's Trends in International…
Descriptors: Foreign Countries, Educational Quality, Family Characteristics, Socioeconomic Background
