Background: Much has been made of whether the evidence supporting mindfulness-based interventions (MBIs) is consistent or high-quality enough to merit their wide implementation, and numerous meta-analyses, reviews, and meta-analyses of meta-analyses have been conducted in pursuit of this question (e.g., Bockmann & Yu, 2023; Goldberg et al.,…

Efficacy studies of educational programs often involve mediator analyses aimed at testing empirically appropriate theories of action. In particular, in the studies of professional teacher development programs, the intervention targets presumably teacher performance while the ultimate outcome is the student achievement measured by a standardized…

Research has proven that teachers have a fundamental influence on student results. Moreover, effective teacher professional development is one of the key mechanisms for improving student achievement. By the most recent OECD (Organisation for Economic Cooperation and Development) definition, "Professional development is defined as activities…

Writing is an essential skill for participating in modern American society. Although it is crucial to careers and civic engagement, student writing falls far short of national expectations (College Board, 2004; NCES, 2012; Persky, Daane, & Jin, 2003). The Common Core State Standards (CCSS) seek to increase the rigor of writing instruction…