This meta-analysis examines the effectiveness of technology-assisted second language (L2) vocabulary learning as well as identifies factors that may play a role in their effectiveness. We found 34 studies with 2,511 participants yielding 49 separate effect sizes. Following the procedure developed by Hunter and Schmidt (2004), we corrected for…

This article presents a meta-analysis on cognitive (e.g., academic performance) and psychosocial outcomes (e.g., self-concept, well-being) among students with general learning difficulties and their peers without learning difficulties in inclusive versus segregated educational settings. In total, we meta-analyzed k = 40 studies with 428 effect…

Listener-based judgements of fluency play an important role in second language (L2) communication contexts and in L2 assessment. Accordingly, our meta-analysis examined the relationship between different aspects of utterance fluency and listener-based judgements of perceived fluency by analyzing primary studies reporting correlation coefficients…

Bjorklund and Kipp (1996) hypothesized that due to selection processes operative during human evolution, females have an inborn advantage over males in the ability to suppress inappropriate responses on tasks in the behavioral and social domains. To test this hypothesis, a meta-analysis was conducted on gender differences on simple delay tasks in…

In this research, a meta-analysis study was conducted to determine the effect of student and teacher-centered practices in science lessons on students' scientific process skills. To this end, the literature related to the studies conducted in Turkey and abroad was searched. For this purpose, articles, master's, and doctoral theses published…

Previous empirical studies on the effect of scaffolding in game-based learning environments have shown inconsistent findings. In this study, we conducted a meta-analysis to examine the effect of scaffolding in digital game-based learning (DGBL) and to explore a range of moderating factors that may have contributed to the inconsistencies of primary…

Research on the question of creative benefit accompanying dyslexia has produced conflicting findings. In this meta-analysis, we determined summary effects of mean and variance differences in creativity between groups with and without dyslexia. Twenty studies were included (n = 770 individuals with dyslexia, n = 1,671 controls). A random-effects…

A deficit in social skills often makes teaching academics a second thought when instructing students with autism. Peer-mediated instruction has been well studied for increasing academic skills across various disabilities and social skills for students with autism spectrum disorder (ASD). The purpose of this study was to determine the effect size…

We conducted a systematic review to identify randomized controlled trials (RCTs) and single case research design (SCRD) studies of children with autism spectrum disorder that evaluate the effectiveness of responsivity intervention techniques for improving prelinguistic and/or language outcomes. Mean effect sizes were moderate and large for RCTs…

Assessing publication bias is a critical procedure in meta-analyses for rating the synthesized overall evidence. Because statistical tests for publication bias are usually not powerful and only give "P" values that inform either the presence or absence of the bias, examining the asymmetry of funnel plots has been popular to investigate…

Publication bias and other forms of outcome reporting bias are critical threats to the validity of findings from research syntheses. A variety of methods have been proposed for detecting selective outcome reporting in a collection of effect size estimates, including several methods based on assessment of asymmetry of funnel plots, such as the…

Online scientific argumentation activities have significant value for students' cognitive ability. The purpose of this study was to solve the issues of online scientific argumentation. Firstly, the influences of online scientific argumentation were classified into "Learn to Argue" and "Argue to Learn" abilities. And then the…

Thousands of education institutions worldwide rely on IELTS scores as criteria for accepting international students whose first language is not English. Individual studies have found varying degrees of strength of correlations and conflicting results between IELTS entry scores and subsequent academic success. These conflicting results were…

This study combines the results of studies on the effect of plyometric training on back and leg muscle strength in different places and times to reveal the overall effect sizes of these results. For this purpose, between 2000-2020 years of plyometric training method in Turkey, back and legs taken the subject of the effect on muscle strength…

We present results from a meta-analysis of 37 contemporary experimental and quasi-experimental studies of summer programs in mathematics for children in grades pre-K-12, examining what resources and characteristics predict stronger student achievement. Children who participated in summer programs that included mathematics activities experienced…