Meta-analyses play an instrumental role in informing second language (L2) theory and practice. However, current (i.e., classic) approaches to meta-analysis are limited in their ability to do so because they often fail to capture the complexity inherent in primary studies' research designs. As we argue in this article, when complex L2 studies are…

Outcomes of meta-analyses are increasingly used to inform evidence-based decision making in various research fields. However, a number of recent studies have reported rapid temporal changes in magnitude and significance of the reported effects which could make policy-relevant recommendations from meta-analyses to quickly go out of date. We…

As adolescent mental health crises intensify across Western, Educated, Industrialised, Rich, and Democratic (WEIRD) countries, schools face mounting pressure to support student wellbeing without sacrificing academic priorities. This tension presents an urgent challenge: how can evidence-based psychological interventions be realistically integrated…

Purpose: Early language intervention is essential for children with indicators of language delay. Enhanced milieu teaching (EMT) is a naturalistic intervention that supports the language development of children with emerging language. We conducted a systematic review and meta-analysis of all qualifying single-case and group design studies that…

In evidence-based practice, new topics generally only have a few studies available for synthesis. As a result, the evidence of such meta-analyses raised substantial concerns. We investigated the robustness of the evidence from these earliest studies. Real-world data from the Cochrane Database of Systematic Reviews (CDSR) were collected. We…

We conducted a descriptive analysis and meta-analysis of single-case research design (SCRD) studies investigating the effectiveness of the graduated guidance procedure. Once we identified studies through electronic databases and reference lists, we used What Works Clearinghouse (WWC) Standards to evaluate each study. Then, we described studies in…

This meta-analysis systematically examines the evidence supporting the effectiveness of performance feedback as an evidence-based practice in the training of preservice special education teachers. A total of 27 studies were evaluated using the rigorous What Works Clearinghouse (WWC) design standards for Single-Case Experimental Research. Results…

Meta-analyses and structured reviews provide a synthesis of the results of multiple studies, thus offering unique contributions to informing practice and advancing science in the field of school psychology. High-quality meta-analyses and structured reviews include a review and summary of the extant studies and highlight clear directions for future…

Background: Research on pedagogical models in physical education has exponentially increased over the last two decades [Casey, A., and D. Kirk. 2020. "Models-Based Practice in Physical Education." London: Routledge]. Moreover, several literature reviews on the effectiveness of the different pedagogical models have been conducted. Due to…

We present 11 evidence-based practices for teaching writing to students. These include recommendations for teaching writing to younger students (aged 5-11) and older students (aged 6-18). The recommendations are based on findings from close to 1000 investigations. The proposed recommendations are (1) students need to write, but writing is not…

We present 11 evidence-based practices for teaching writing to students. These include recommendations for teaching writing to younger students (aged 5-11) and older students (aged 6-18). The recommendations are based on findings from close to 1000 investigations. The proposed recommendations are: (1) students need to write, but writing is not…

Coping Power (CP) is an evidence-based intervention that reduces externalizing behaviors in students who are identified as aggressive or disruptive. CP is based on a cognitive-behavioral model and involves child-focused group sessions and parent-focused sessions. A large body of research has demonstrated the effectiveness of CP, but to date there…

This study aimed to examine the efficacy of school-based e-cigarette preventive interventions via a systematic review and meta-analysis. We searched Medline, Embase, PsycINFO, Scopus, CINAHL, Cochrane, and clinical trial registries for studies published between January 2000 and June 2023 using keywords for e-cigarettes, adolescents, and school. Of…

Introduction: The What Works Clearinghouse (WWC) reviews rigorous research on educational interventions with a goal of identifying "what works" and making that information accessible to educators and policymakers. The WWC has historically prioritized internal validity over external validity in rating the quality of research. One critique…

Children who engage in aggressive behaviors are at heightened risk of being involved in the justice system, committing serious offenses, and becoming chronic offenders. The Stop Now And Plan (SNAP) program was designed as an early intervention to address several mechanisms underlying the development of conduct problems, including emotion…