Effectiveness of conceptual change texts: A meta analysis

The purpose of this study was to determine the overall effectiveness of conceptual change texts on academic achievement and to find out some related characteristics of the study. This study followed up a Meta analysis research approach. In this research 42 published and unpublished studies? effect sizes were analyzed. The overall effect size for conceptual change texts was calculated as 1.18. This is a large effect size according to Cohen?s criteria.It was found that conceptual change texts have been quite effective than the traditional method. Hovewer these findings indicated that there was no publication bias in respect to publication status. Considerably strong effects were found for chemistry subject and also university level. Also it was found that instructor effect was the single factor that affecting students? academic success.