عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Present research studies performed thesis about academic failure between academic years 1990-2012 in Tehran Universities. Within related projects, 55 projects which had information necessary for analysis were selected as final sample. CMA-2 software was used for calculating Coefficients. Results of Q test showed that primary studies are not homogenous and studying Nfs showed that there isn’t protection of distribution within studies. Dual and Toidi correction test was performed for both constant and random models. Measure of total effect for all studies under both constant and random models, was gained statistically meaningful. Also, measures of effect in separation of distribution year, sampling method, sex of sample, education program, research method and factors affected on educational slump were gained statistically meaningful. Average of effect measures was 0.312 and educational factor, with effect measure higher than average, showed the most effect on educational slump. The results showed that variables of education, socioeconomic, individual factor, family factor and sex factor had the most effect on educational slump respectively. Also, studying hypotheses showed that there is meaningful difference between effect measures of educational slump according to year of research, sampling method, sex, education program, meaningful level, factors being effective on educational slump and research method.