A structural equation modeling study : factors affecting science achievement based on OBBS-2002 across grade levels and school types

Kalender, İlker
In this study, factors that affect students' science achievement were modeled based on the data which was obtained from Study for Determination of Student Achievement ا 2002 (Ogrenci Basarisinin Belirlenmesi Calismasi ا OBBS). First, using principle components analysis tecnique, dimensions of the student questionnaires and science achievement tests were found out. Using these dimensions for student questionnaires, latent variables socioeconomic status, student-centered activities, teacher-centered activities, private tutoring, experiments/technological material usage, and perception of interest and success were selected to be included in this study. Then, a reference model was proposed for factors affecting students' science achievement. Lastly, this reference model was tested across three grade levels (6th, 7th, and 8th) and three school types (state, boarding, and private) and comparisons among them were made. As a result of modeling which was conducted by structural equation modeling technique (SEM) using LISREL 8.30, the study yielded the followings: Socioeconomic status has a strong effect on science achievement for all grade levels investigated. While teacher-centered activities generally affect students' science achievement in a positive way, student-centered activities show a negative effect. Teacher-centered activities affect perception of interest and success as much as nearly they do for science achievement. Direct effect of teacher-centered activities is not significant for state and boarding schools, but their indirect effects strengthen the effect of teacher-centered activities on science achievement. Effect of experiments and technological material on perception of interest and success is negative for all grade levels and school types, except state schools in which it is positive.


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Citation Formats
İ. Kalender, “A structural equation modeling study : factors affecting science achievement based on OBBS-2002 across grade levels and school types,” M.S. - Master of Science, Middle East Technical University, 2004.