Selected methodological characteristics of meta-analyses related to educational achievement are reviewed in an exploration of the practice of meta-analysis and the characteristics of meta-analyses related to educational achievement, as well as possible relationships among background, methodological and substantive characteristics, and effect…

A "best evidence" review synthesis, which incorporates features of meta-analytic and traditional literature reviews, is used in this review of studies on the effects of ability grouping on secondary school students' achievement. The focus was on 29 studies that compared between-class ability grouping to heterogeneous placements. Effect sizes were…

Statistical methodologists have sometimes criticized the use of conventional statistics in meta-analysis, and in recent years a number of them have advocated the use of a special new statistical methodology for research synthesis. An examination of recent books describing this methodology shows that it is seriously limited in its applicability to…

A meta analysis of preschool intervention programs is performed to arrive at an overall effect size of such programs. Results indicate that despite the diversities in intervention sites, ages of subjects, lengths of intervention, and curricula models, there is a positive homogeneous effect on the variables. (Author/LMO)

The aim of this paper is to examine a variety of features of research that might account for mixed findings of the relationship between teachers' subject matter knowledge and student achievement based on meta-analytic technique. Of several variables that might contribute to inconsistencies and variations in study findings, three features of…

This volume is part of the final report of the National Evaluation of Family Support Programs and details findings from a meta-analysis of extant research on programs providing family support services. Chapter A1 of this volume provides a rationale for using meta-analysis. Chapter A2 describes the steps of preparation for the meta-analysis.…

Ten Minnesota Multiphasic Personality Inventory-2 (MMPI-2) fake-bad scales/indexes are reviewed with respect to their potential usefulness in evaluation of feigning mental illness, and a meta analysis of the MMPI is performed. One scale and two indexes were superior when effect sizes were calculated. (SLD)

Describes and discusses metanalysis and criticisms of the methodology. Reports on a pilot study which tested the feasibility of metanalytic methods in library science research using the literature on paper- or computer-based information retrieval. (28 references) (EA)

A meta-analysis of 41 studies was conducted to examine the strength of the relation between parenting (positive control, negative control and responsiveness) and self-regulation in preschoolers. Results revealed significant associations between both types of parental control and self-regulation, with effect sizes being small in magnitude. There…

Background: The differential effectiveness of parent training has led researchers to examine a variety of child, parent, and familial variables that may predict treatment response. Studies have identified a diverse set of child, parent psychological/behavioral and demographic variables that are associated with treatment outcome and dropout.…

A meta-analysis of 50 studies was conducted to investigate whether juvenile delinquents use lower levels of moral judgment than their nondelinquent age-mates and, if so, what factors may influence or moderate the developmental delay. The results show a lower stage of moral judgment for juvenile delinquents (d = 0.76). Effect sizes were large for…

In response to critics' charges that use of the word processor may have a detrimental effect on writing, this study identified and analyzed 20 published studies that used experimental and control groups to compare conventional writing instruction (using handwriting) with instruction using the word processor. Five types of outcomes were analyzed:…

This paper focuses on a critical analysis and reanalysis of two earlier multisection validity meta-analyses of student ratings of instruction. The reanalysis is based on a sharpening of criteria for: (1) including studies in the meta-analysis; (2) defining key study characteristics that influence results; and (3) calculating the correlational…

The purpose of this investigation was to conduct a quantitative synthesis of correlational research that focused on the Dunn and Dunn Learning-Style Model and was concerned with adult populations. A total of 8,661 participants from the 47 original investigations provided 386 individual effect sizes for this meta-analysis. The mean effect size was…

This literature review examined 16 treatment studies which employed electroencephalographic (EEG) biofeedback to treat children with attention-deficit/hyperactivity disorder (ADHD). An introductory section reviews hallmarks of ADHD, its historical background, current diagnostic criteria, etiology, single treatment or symptom focused treatment,…