This article extends both the logic and the statistical procedures used in a recent analysis of Hyde's data on gender differences in cognitive abilities by Rosenthal and Rubin. The logic of a "model fitting" approach to meta-analysis is described. Relevant statistical procedures and goodness-of-fit tests are illustrated. (Author/BS)

The aggregate findings of experiments with modern mathematics for the last 30 years show that there have not been many detrimental effects of "new math" either on achievement or attitude. Instead, the evidence points toward beneficial effects in terms of improvement in overall achievement and attitude. (Author/BW)

This article reports the results of a meta-analysis of 20 research articles containing 89 effect sizes related to the use of digital tools and learning environments to enhance literacy acquisition. Results (weighted effect size of 0.489) demonstrate that technology can have a positive effect on reading comprehension, but little research has…

Considers the effects of learner control in computer-assisted instruction based on literature reviews and a meta analysis of 24 studies. Results suggest that learner control has little if any effect on students, and further research is recommended. (Author/LRW)

Describes a meta-analysis of 41 studies that looked at effectiveness of continuing medical education (CME) for improving physician knowledge and performance; at influence of CME on patient health status; at variables relating to quality of instructional program design; and at effects of intervening variables and threats to validity in methodology…

Results obtained in a metanalysis using indirect alternative methods of computing standardized mean difference effect sizes (SMDESs) were compared with results obtained from direct calculations of SMDESs. In most cases, alternative methods yield very comparable results and are beneficial to use, especially when sample sizes are large. (SLD)

The purpose of this tutorial is to enhance the familiarity and accessibility of meta-analyses in the domains of audiology and speech-language pathology for investigating questions of treatment efficacy and treatment effectiveness. Steps to conducting a meta-analysis are explained and an example of meta-analysis using published data is included.…

Meta-analysis of 16 studies of expatriate managers' adjustment and 25 of expatriate job performance showed that mean effect sizes were lower than in previous analyses. Cautions about basing cross-cultural training on results of such studies were expressed. (Contains 68 references.) (SK)

Describes analyses based on 35 studies on effectiveness of Grief Therapy. Clients with no-treatment control groups showed little improvement, possibly because of the relatively long delay between loss and treatment. Client selection procedures appear to contribute strongly to variability in effect size (ESs). The majority of studies involving…

A meta-analysis of 21 studies compared the effectiveness of computer-assisted instruction (CAI) with traditional instruction. Results showed that CAI focusing on higher-order learning in technical education was more effective. (Contains 38 references.) (JOW)

Numerous studies show that happy individuals are successful across multiple life domains, including marriage, friendship, income, work performance, and health. The authors suggest a conceptual model to account for these findings, arguing that the happiness-success link exists not only because success makes people happy, but also because positive…

One conceptualization of meta-analysis is that studies within the meta-analysis are sampled from populations with mean effect sizes that vary (random-effects models). The consequences of not applying such models and the comparison of different methods have been hotly debated. A Monte Carlo study compared the efficacy of Hedges and Vevea's…

Research concerning the treatment of sexual offenders has generally focused on the treatment of adult offenders. The effectiveness of treatments for male adolescent sexual offenders (N = 644) was assessed in a meta-analysis of 10 studies. Overall, the results were surprisingly encouraging, suggesting that treatments for male adolescent sexual…

There is a vast body of literature on school size but comparatively few high quality empirical studies comparing outcomes in schools of different sizes. This systematic review synthesizes the results of the published research from 31 studies on the effects of secondary school size from OECD countries since 1990. Overall the directions and patterns…

Objectives: This meta-analysis evaluates treatment effects for nonpsychotic major depression during pregnancy and postpartum comparing interventions by type and timing. Methods: Studies for decreasing depressive severity during pregnancy and postpartum applying treatment trials and standardized measures were included. Standardized mean differences…