In a review of 46 meta-analyses of gender differences, overhand throwing had the largest gender difference favoring boys (ES greater than 3.0). Expectations for gender-specific performances may be less pronounced in female Australian Aborigines, because historical accounts state they threw for defense and hunting. Overhand throwing velocities and…

A meta-analysis of the relationship between attitudes in reading and achievement in reading was conducted to provide a statistical summary to the observed variability in the magnitude of previously reported effect sizes. A total of 32 studies, with a total sample size of 224,615 were used, and included a total of 118 effect sizes. A multi-level…

This article explores research on the use of computerized games and simulations in language education. The author examined the psycholinguistic and sociocultural constructs proposed as a basis for the use of games and simulations in computer-assisted language learning. Research in this area is expanding rapidly. However, to date, few studies have…

This meta-analysis examined the association between conduct problems and lead exposure. Nineteen studies on 8,561 children and adolescents were included. The average "r" across all 19 studies was 0.19 (p less than 0.001), which is considered a medium effect size. Studies that assessed lead exposure using hair element analysis yielded…

Fifty years of theory and research offer increasing levels of support for the assertion that principal leadership makes a difference in the quality of schooling, school development, and student learning. In the current context of global education reform, however, recent inquiries have focused on identifying how teams of school leaders contribute…

The author begins her comments on "Reviewing Adolescent Literacy Reports: Key Components and Critical Questions" by commending the authors for taking on this rather massive project. The project required not only locating and reading the many lengthy reports that exist on adolescent literacy but also sifting through the numerous claims, ideas, and…

Purpose: Specific language impairment (SLI) is known to aggregate in families. Debate exists on whether the male sex presents an additional risk for SLI. This meta-analysis examined whether there is a sex ratio difference in the risk for impairment among family members of an SLI proband and whether this is mediated by assessment method (direct…

The authors report the contextualization of effect sizes within mathematics anxiety research, and more specifically within research using the Mathematics Anxiety Rating Scale (MARS) and the MARS for Adolescents (MARS-A). The effect sizes from 45 studies were characterized by graphing confidence intervals (CIs) across studies involving (a) adults…

The utility of psychopathy measures in predicting violence is largely explained by their assessment of social deviance (e.g., antisocial behavior; disinhibition). A key question is whether social deviance "interacts" with the core interpersonal-affective traits of psychopathy to predict violence. Do core psychopathic traits multiply the (already…

IQ test scores should be corrected for high stakes decisions that employ these assessments, including capital offense cases. If scores are not corrected, then diagnostic standards must change with each generation. Arguments against corrections, based on standards of practice, information present and absent in test manuals, and related issues,…

The aim of this meta-analysis is to examine whether children of chronically ill parents differ from norm groups in problem behavior. We report moderator effects and overall effect sizes for internalizing, externalizing and total problem behavior assessed by children and parents. In fixed effect models, we found a significant overall effect size…

Hispanic students, born both inside and outside the United States, comprise over 80% of the US English language learner population. The difference in mathematics achievement among Hispanic students and other populations has been well documented. As a result, it is important to understand the effects of using standards-based mathematics curriculum…

The purpose of this integrative review is to facilitate social work practitioners' understanding of how psychotropic drug harms are assessed in clinical trials and to make specific suggestions for social workers' increased involvement in detecting drug harms in their clients. The authors undertook a comprehensive review of interdisciplinary…

Over the past two decades an escalating interest in the construct of emotional intelligence (EI) has made its way into the popular press, professional press, and peer reviewed journals. Not surprisingly, an interest in EI is also gaining ground in academic settings (Parker, Duffy, Wood, Bond & Hogan, 2002; Parker, Hogan, Eastabrook, Oke &…

The effectiveness of different types of practices for promoting practitioner and parent adoption of different kinds of assistive technology and adaptations with young children birth to 105 months of age was the focus of a meta-analysis. Six operationally defined adult learning method characteristics and between 2 and 5 practices for each…