Thesis:

Meta-analysis of researches conducted in the field of effectiveness of blended learning on learning rate

The aim of the present research is meta-analysis of the researches conducted in the field of effectiveness of blended learning on the learning rate. The statistical population of the research is all the studies that were conducted in the form of articles in the two databases SID.IR and ENSANI.IR and also in the form of dissertations in the IRANDOC.IR website between 2013 and 2014 in the field of combined education. From this community, 35 master theses and doctoral theses were obtained from the irandoc.ir database and 114 articles from the sid.ir and ensani.ir websites, of which 74 studies had the basic criteria necessary to enter the meta-analysis. In the subsequent reviews, based on the previously defined characteristics, 65 studies were selected for sampling, and finally, after reviewing 35 studies based on the inclusion criteria; It was entered into meta-analysis and an information document was extracted for each of these 23 studies. SPSS software was used to analyze descriptive findings and CMA2 software was used to analyze inferential findings. The results of the research showed that the effect size for all data in the fixed model is equal to 0.14 and in the random model is equal to 0.49, which is significant in both models. Also, the effect size was calculated for each of the influential variables in meta-analysis such as research method, sampling method and statistical method.

Keywords: Blended learning, effectiveness, learning, meta-analysis, diffusion bias, homogeneity