This article reviews research on the achievement outcomes of elementary mathematics programs. 85 rigorous experimental studies evaluated 64 programs in grades K-5. Programs were organized in 6 categories. Particularly positive outcomes were found for tutoring programs. Positive outcomes were seen in studies focused on professional development for…

Decades of research has assessed the benefits of children's and adolescents' friendships, but friendships among youth often dissolve within a matter of months or years. Studies have investigated predictors and consequences of friendship stability with the expectation that, in order for friendships to have a positive or negative influence on youth,…

Internet-based learning is increasingly applied in medical education, but its effect in the field of public health training is still unclear. This meta-analysis was undertaken to explore the impact of Internet-based learning on students'/professionals' knowledge of public health compared with no intervention and with traditional face-to-face (FTF)…

It has been argued that children who possess an advanced theory of mind (ToM) are more likely to act prosocially, yet the empirical findings are mixed. To address this issue definitively, a meta-analytic integration of all prior literature that met appropriate inclusion criteria was conducted. In total, 76 studies including 6,432 children between…

This study examined the relationships among statistics achievement and four components of attitudes toward statistics (Cognitive Competence, Affect, Value, and Difficulty) as assessed by the SATS. Meta-analysis results revealed that the size of relationships differed by the geographical region in which the studies were conducted as well as by the…

Despite the large research base grounded in behavioral theory for strategies to increase appropriate behavior and prevent or decrease inappropriate behavior in the classroom, a systematic review of multi-component universal classroom management research is necessary to establish the effects of teachers' universal classroom management approaches.…

Background: Accumulating studies have demonstrated that the Screen for Child Anxiety Related Emotional Disorders (SCARED), a modern youth anxiety questionnaire with scales explicitly designed to map onto specific DSM-IV-TR anxiety disorders, has good psychometric properties for children and adolescents from various countries. However, no study has…

This meta-analysis examines the effects of family literacy programs on children's literacy development. It analyzes the results of 30 recent effect studies (1990-2010), covering 47 samples, and distinguishes between effects in two domains: comprehension-related skills and code-related skills. A small but significant mean effect emerged (d = 0.18).…

This article describes the effects of self-instruction training (SIT) in microcounseling skills compared to those of a traditional trainer-guided program (TT) in a pretest-posttest comparison group design. A sample of 193 undergraduate psychology students participated in this study: 97 students followed SIT and 96 students followed TT. We used…

Although it is generally believed that early intervention programmes are an effective means to stimulate children's cognitive development, many questions remain concerning programme design and delivery. This article reviews 19 studies into the effectiveness of early intervention programmes published from 1985 onward. The database comprised 85…