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…

The present article offers a review of the existing literature on L2 gains arising from participation in a study abroad (SA) experience. The purpose of this article is (1) to provide a general overview of research findings on the influence of time abroad on L2 development and (2) to identify the areas which need further research within the SA…

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…

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)