In response to rising rates of firearms violence that peaked in the mid-1990s, a wide range of policy interventions have been developed in an attempt to reduce violent crimes committed with firearms. Although some of these approaches appear to be effective at reducing gun violence, methodological variations make comparing effects across program…

The purpose of this study was to determine the perceptions of building principals toward superintendent leadership responsibilities and practices of goal setting, nonnegotiable goals for achievement and instruction, board alignment with support of district goals, monitoring goals for achievement and instruction, use of resources to support the…

The purpose of this study was to perform a comprehensive analysis of 830 articles published in the "Journal of Career Development" ("JCD") between 1972 and 2007 and provide a chronicle of the publication trends since the journal's establishment. The analysis focused on six main areas (e.g., authors and institutions, type of article, major…

Background: A meta-analysis examined the effects of deinstitutionalisation on adaptive behaviour outcomes in persons with intellectual disability. The need for an updated review in this area is reflected by recent policy shifts in community care practices and the international status of deinstitutionalisation efforts. Method: Twenty-three studies…

Research on bystander intervention has produced a great number of studies showing that the presence of other people in a critical situation reduces the likelihood that an individual will help. As the last systematic review of bystander research was published in 1981 and was not a quantitative meta-analysis in the modern sense, the present…

Although the National Early Literacy Panel report provides an important distillation of research, the manner in which the data are reported underrepresents the importance of language. Unlike other predictors with moderate associations with later reading, language exerts pervasive and indirect influences that are not described by the effect sizes…

A substantial amount of research has been conducted in an effort to understand the impact of short-term (less than 48 hr) total sleep deprivation (SD) on outcomes in various cognitive domains. Despite this wealth of information, there has been disagreement on how these data should be interpreted, arising in part because the relative magnitude of…

In this article, we analyzed research studies in the field of graduate education. In particular, we explored the issue of inequity in graduate education through three key lenses of social science analyses. Furthermore, we analyzed selected quantitative research studies that undertook a comparative examination of aggregate trends in enrollment and…

Research on the predictors of 3 bully status groups (bullies, victims, and bully victims) for school-age children and adolescents was synthesized using meta-analytic procedures. The primary purpose was to determine the relative strength of individual and contextual predictors to identify targets for prevention and intervention. Age and how…

A meta-analysis was conducted to determine relationships between team training and team effectiveness. Results from the 21 studies provided evidence that training is positively related to team effectiveness and effectiveness in five outcome categories: affective, cognitive, subjective task-based skill, objective task-based skill, and teamwork…

This meta-analysis draws studies from the literature on college student persistence, need theories, and positive psychology in investigating the strongest predictors of social functioning in college students in the United States and Canada. The predictor categories included background characteristics, measures of personality, mental health…

This meta-analysis was performed to determine the overall effectiveness of computer assisted instruction on students' academic achievement in science education from 2001 to 2007 in Turkey. The study reported the results of 65 effect sizes (ES) included in 52 studies. Grand mean for 65 ESs was found to be 1.12. This effect size can be interpreted…

The Daily Behavior Report Card is an intervention showing promise in various formats and in multiple settings. A meta-analysis evaluated the size of effects obtained from Daily Behavior Report Card interventions within single case research designs, investigating six potential moderators of treatment effects: student age, target behavior,…

The current meta-analysis compares the self-concepts and perceived competencies of gifted and non-gifted students. Using meta-analytic methods to synthesise the results of 40 studies, we found that gifted students scored significantly higher than non-gifted students on measures of academic and behavioural perceived competence, as well as global…

A meta-analysis is undertaken, including 11 studies, to determine whether there is a relationship between Bible knowledge on one hand and academic and behavioral outcomes on the other among those living in urban areas. The results indicate that increased Bible knowledge is associated with higher levels of student academic achievement and positive…