“…At this point, the results of the study also show consistency with those that were not included in the analysis. The excluded studies can be listed as follows: the MA theses on a national level (Çakan, 2006;Moradaoğlu, 2006;Taşezen, 2005;Türkuzan, 2004); PhD dissertation (Bümen, 2001); articles (Azar, Presley, & Balkaya, 2006); conference/congress (Kıray & Göktaylar, 2004), and a variety of studies on an international level (Kuo, Maker, Su, & Hu, 2010;Sulaiman, Abdurahman, & Rahim, 2010;Zhao, Zhang, & Vance, 2013). For this reason, the results for the meta-analytic study concerning students' academic achievement can be said to be quite consistent with the related literature.…”