Multisite research designs involving cluster randomization are becoming increasingly important in educational and behavioral research. Researchers would like to compute effect size indexes based on the standardized mean difference to compare the results of cluster-randomized studies (and corresponding quasi-experiments) with other studies and to…

The authors critiqued the M. K. Lovelace (2005) meta-analysis of the Dunn and Dunn Model of Learning-Style Preferences (DDMLSP). The conclusion that Lovelace reported in her meta-analysis that learning-style instruction is a beneficial form of instructional delivery is unjustified because of critical conceptual and practical problems. Those…

This article reports on new findings from a forthcoming research review which analyzes 207 studies of school-based programs designed to foster children's social and emotional skills. Roger P. Weissberg, the president of the Collaborative for Academic, Social, and Emotional Learning, or CASEL, the Chicago-based group that sponsored the four-year…

The authors examined the methodologies of articles in teaching-and-learning research journals, published in 1994 and in 2004, and classified them as either intervention (based on researcher-manipulated variables) or nonintervention. Consistent with the findings of Hsieh et al., intervention research articles declined from 45% in 1994 to 33% in…

This article takes a further look at the percentage of data points exceeding the median (PEM) analysis method for single-case research data, first presented in this journal by Hsen-Hsing Ma. Ma examined the relationship between PEM and the established percentage of nonoverlapping data (PND) and then applied PEM in a meta-analysis of 61 data sets,…

Objective: To summarize existing research on individual numeracy and methods for presenting risk information to patients. Methods: We selectively retrieved articles from MEDLINE and the "Social Sciences Citation Index". Results: Many Americans have low numeracy skills, a deficit that impedes effective health care. Approaches to risk communication…

The present meta-analytic review aimed to clarify divergent findings concerning the relation between reactive and proactive aggression in children and adolescents. Fifty-one studies with 17,965 participants were included in the analysis. A significant correlation between reactive and proactive aggression was found. The strength of this relation…

Social skills deficits are a central feature of autism spectrum disorders (ASD). This meta-analysis of 55 single-subject design studies examined the effectiveness of school-based social skills interventions for children and adolescents with ASD. Intervention, maintenance, and generalization effects were measured by computing the percentage of…

This meta-analysis of 172 studies (N = 2,263 anxious, N = 1,768 nonanxious) examined the boundary conditions of threat-related attentional biases in anxiety. Overall, the results show that the bias is reliably demonstrated with different experimental paradigms and under a variety of experimental conditions, but that it is only an effect size of d…

What constitutes quality in early childhood settings, and how can it best be measured with today's widely used tools and promising new approaches? Find authoritative answers in this book, a must-have for high-level administrators and policymakers as more and more states adopt early childhood Quality Rating and Improvement Systems. The most…

To respond to Congress' interest in student outcomes at different types of schools, this report addresses the following questions: (1) What does research show about graduation rates, employment outcomes, student loan debts, and default rates for students at for-profit schools compared to those at nonprofit and public schools, taking differences in…

States and the federal government have invested in early care and education programs with an explicit goal of improving school readiness for low-income children. These investments, aimed at strengthening the quality of care and supporting families' access to high-quality settings, are based in part on a confluence of research findings showing a…

The purpose of this paper was to identify the characteristics and history of online education, to examine research on the effectiveness of online learning, and to note the principles and practices indicated for maximizing the effectiveness of online learning. Leading articles and studies on online education were identified and examined for this…

A recent meta-analysis found that across studies individual differences in aspects of children's emotionality predict social status [Dougherty, L.R., (2006). Children's emotionality and social status: a meta-analytic review. Social Development, 15, 394-417.]. In the present study we extended these findings by examining the emotion of interest and…

The purpose of this paper is to develop a conceptual framework and research hypotheses based upon a thorough review of the conceptual and limited published empirical research in the organizational learning and innovation performance literatures. Hypotheses indicate the relationships between organizational learning, its antecedent, perception of…