Purpose: The purpose of this paper is to review cross-disciplinary research on e-learning from workplace learning, educational technology, and instructional communication disciplines to identify relevant e-learning design principles. It aims to use these principles to propose an e-learning model that can guide the design of instructionally sound,…

In meta-analysis, it is common to have dependent effect sizes, such as several effect sizes from the same sample but measured at different times. Cheung and Chan proposed the adjusted-individual and adjusted-weighted procedures to estimate the degree of dependence and incorporate this estimate in the meta-analysis. The present study extends the…

This meta-analysis of 68 studies (770 effect sizes) used random effects models to examine whether children's achievement differed depending on whether their mothers were employed. Four achievement outcomes were emphasized: formal tests of achievement and intellectual functioning, grades, and teacher ratings of cognitive competence. When all…

In recent years, computer-based testing (CBT) has grown in popularity, is increasingly being implemented across the United States, and will likely become the primary mode for delivering tests in the future. Although CBT offers many advantages over traditional paper-and-pencil testing, assessment experts, researchers, practitioners, and users have…

This article systematically reviews research on the achievement outcomes of four types of approaches to improving the reading of middle and high school students: (1) reading curricula; (2) mixed-method models (methods that combine large-and small-group instruction with computer activities); (3) computer-assisted instruction; and (4)…

Early childhood multicultural education presents teachers with the challenge of how to engage young children in exploring issues of diversity and inequality in meaningful, authentic, and hopeful ways. To support these efforts, this review summarizes past and current research on children's understandings and feelings related to race, social class,…

The literature on Web-based instruction (WBI) is reviewed, focusing initially on the terminology, history, and commentary (pro and con) related to the topic. The advantages and disadvantages associated with WBI are then discussed and an overview of the empirical work on WBI, paying particular attention to studies on student satisfaction and…

The purpose of this meta-analysis was to synthesize findings from 42 interventions (randomized control trials and quasi-experimental studies) on instructional approaches that enhance the mathematics proficiency of students with learning disabilities. We examined the impact of four categories of instructional components: (a) approaches to…

The introductory article to this series (Roblyer, 2005) outlined four kinds of studies that could move the educational technology field forward and that are lacking in the current published research base: (1) Research to Establish Relative Advantage; (2) Research to Improve Implementation Strategies; (3) Research to Monitor Impact on Important…

This paper presents a conceptual, contingent model of management development. It explains the nature of the UK hospitality industry and its potential influence on MD practices, prior to exploring dimensions and relationships in the model. The embryonic model is presented as a model that can enhance our understanding of the complexities of the…

This report responds to the need for information on how to improve adolescent writing skills. The study builds upon previously published "Reading Next" results and highlights key elements essential to improving writing. The study used meta-analysis, allowing researchers to determine the strength and consistency of the effects of different…

Introduction: Physicians spend a considerable amount of time in Continuing Medical Education (CME) to maintain their medical licenses. CME evaluation studies vary greatly in evaluation methods, levels of evaluation, and length of follow-up. Standards for CME evaluation are needed to enable comparison among different studies and to detect factors…

Do adopted children show lower self-esteem than nonadopted peers, and do transracial adoptees show lower self-esteem than same-race adoptees? Adopted children are hypothesized to be at risk of low self-esteem. They may suffer from the consequences of neglect, abuse, and malnutrition in institutions before adoption. They have to cope with their…

Practitioners working in social welfare, education, judicial circuits, psychology, and many other domains of human sciences daily decide on best treatments for their clients. The authors expect those practitioners to base their decisions on evidence from scientific research. The Campbell collaboration is an international nonprofit organization…

This article examines what we know about effective adolescent writing instruction and what we still need to know. What we know is established by bringing together the findings from three sources: a comprehensive meta-analysis of experimental and quasi-experimental studies (Graham & Perin, 2007), a meta-analysis of single-subject design studies…