This study set out to re-examine the effectiveness of study abroad programs in second language (L2) acquisition through a multi-level meta-analysis. Overall, 42 primary studies published between 1995 and 2019 were identified, and in total 283 effect sizes were meta-analysed. This study implemented a three-level random effects model to account for…

This research aims to examine the experimental studies on the impact of simulation technique on students' academic achievement using the meta-analysis method. The previous studies that could be meta-analyzed were examined based on the criteria set out in this study. Finally, 91 studies that were conducted between 2010-2020 years and met the…

In this review, we have examined the main components of peer tutoring in mathematics in primary education (1st to 6th grade) settings. Fifty studies were included in this article. The review was intended to examine trends in this research field regarding roles of the participants, their age (same-age vs cross-age), the methodological approach…

The purpose of this study was to examine the effects of physical exercise programs on individuals with intellectual disabilities (ID). This meta-analysis analyzed 67 effect sizes and 14 studies and calculated the standardized mean difference in effect size. The unit of analysis for overall effects was the study, and the sub-group analysis focused…

The aim of this study was to compare the effects of 8-week aerobic exercise program on blood lipids and cholesterol profile of smoker's vs. non-smokers. A total of 34 male subjects (18 non-smokers and 16 smokers) took part in this study. Both groups were pre- and post tested in their blood-lipids and cholesterol profile before and after the 8-week…

Whereas much is known about designing effective continuous professional development (CPD) for teachers, little is known about spillover effects of CPD by fostering collegial interactions. In this respect, the self-efficacy expectancy of multipliers to spread CPD issues within their own school is an important predictor for scaling. Self-efficacy…

As policymakers contemplate expanding preschool opportunities for low-income children, one possibility is to fund 2, rather than 1 year of Head Start for children at ages 3 and 4. Another option is to offer 1 year of Head Start followed by 1 year of pre-K. We ask which of these options is more effective. We use data from the Oklahoma pre-K study…

As policy-makers contemplate expanding preschool opportunities for low-income children, one possibility is to fund two, rather than one year of Head Start for children at ages 3 and 4. Another option is to offer one year of Head Start followed by one year of pre-k. We ask which of these options is more effective. We use data from the Oklahoma…

Background: The implementation of inclusive education creates challenges for classroom teachers who have to meet the learning needs of students with and without special educational needs (SEN). Research has revealed that teachers' readiness and willingness to accommodate the learning needs of students with SEN was determined by their…

This meta-analysis examined the influence of attributes related to the implementation of learning strategy instruction interventions on students' academic performance, and also examined how the attributes related to the method of testing the intervention effects affected the actual effects measured. Using metaregression, we analyzed the…

This meta-analysis used hierarchical linear modeling to examine 115 single-case studies with 343 participants that examined the effectiveness of social skills interventions for individuals with autism spectrum disorder (ASD). The average effect size of the included studies was 1.40 (SD = 0.43, 95% CL = 1.32-1.48, N = 115). In the further, several…

We use three data sources to build a rationale for why intensive interventions are necessary for students with pervasive reading disabilities: current data on the performance of students with disabilities on reading achievement measures over time, observation studies on students with reading disabilities in general and special education…

In this study, we meta-analyzed empirical research of the effectiveness of intelligent tutoring systems (ITS) on K-12 students' mathematical learning. A total of 26 reports containing 34 independent samples met study inclusion criteria. The reports appeared between 1997 and 2010. The majority of included studies compared the effectiveness of ITS…

Fifty-five studies of a variety of education interventions designed to stimulate development in moral judgment, which used the Defining Issues Test, are reviewed. Results are discussed in terms of general treatment effects, program type, exposure to Kohlberg's Theory, subject age, and treatment duration. (Author/BS)

A meta-analytic review of all adequately designed field and laboratory research on the use of incentives to motivate performance is reported. Of approximately 600 studies, 45 qualified. The overall average effect of all incentive programs in all work settings and on all work tasks was a 22% gain in performance. Team-directed incentives had a…