Childhood and adolescence are pivotal developmental stages for psychological health. An understanding of psychological mechanisms related to well-being is important for promoting positive life outcomes for youth. Research generally shows that the basic psychological need for autonomy is significantly associated with well-being. To examine the…

The two main purposes of the current meta-analysis were (1) to determine the relation between socioeconomic status (SES) of students and academic performance (AP) and (2) and evaluate the effect of several potential moderating factors in this relation. Data covered the publications between 2010 and 2019, and the dataset consisted of 48 independent…

This meta-analysis synthesized research on gender gap in the Force Concept Inventory (FCI). The main goal of the present meta-analysis was to identify the moderator variables that mediate effect size differences. Furthermore, the statistical significance of the average effect sizes was investigated. The inclusion criteria for the meta-analysis…

Mindfulness-based interventions (MBIs) in schools have positive effects on cognitive and socio-emotional processes, but do not improve behavior and academic achievement. The use of mindfulness-based interventions (MBIs) in schools has been on the rise. Schools are using MBI's to reduce student stress and anxiety and improve socio-emotional…

Over the past two decades, the number and types of after-school programs (ASPs) have increased substantially as a result of increased federal and private spending and because ASPs are perceived to provide wide-ranging and far-reaching benefits to students, families, schools and the public. The purpose of this systematic review and meta-analysis is…

The last decade has witnessed considerable interest in the investigation of the affective dimensions of learning and in the development of advanced learning technologies that automatically detect and respond to student affect. Identifying the affective states that students experience in technology-enhanced learning contexts is a fundamental…

The purpose of this study was to examine the relationship of specific cognitive abilities and reading comprehension across a variety of norm referenced tests that align with Cattell-Horn-Carroll (CHC) theory of cognitive abilities and integrative models of reading. Data from existing studies was analyzed by comparing the relationships of four…

The internal/external frame of reference (I/E) model and dimensional comparison theory posit paradoxical relations between achievement (ACH) and self-concept (SC) in mathematics (M) and verbal (V) domains; ACH in each domain positively affects SC in the matching domain (e.g., MACH to MSC) but negatively in the nonmatching domain (e.g., MACH to…

Worldwide, the interest of policy-makers in participating in studies from the International Association for the Evaluation of Educational Achievement (IEA), such as Trends in International Mathematics and Science Study (TIMSS) has been growing rapidly over the past two decades. These studies offer the opportunity to relate the teaching and…

Results of a previous meta-analysis of gender differences in reading achievement at the secondary school level (Lietz, in press) showed significant differences between major assessment programs. Thus, the gender gap in favour of girls was more pronounced for the assessment programs conducted by the National Assessment of Educational Programs in…