Experimental research in education and training programs typically involves administering treatment to whole groups of individuals. As such, researchers rely on the estimation of design parameter values to conduct power analyses to efficiently plan their studies to detect desired effects. In this study, we present design parameter estimates from a…

This meta-analysis examined if students' writing performance is improved by reading interventions in studies (k = 54 experiments; 5,018 students) where students were taught how to read and studies (k = 36 investigations; 3,060 students) where students' interaction with words or text was increased through reading or observing others read. Studies…

Background: The link between disorders of attachment and psychopathology is well documented. Consequently, a person's attachment style has a profound effect on his or her development and psychological well-being. At-risk populations such as adopted children are more prone to developing pervasive patterns of attachment, given the maternal…

Purpose: Among the gold standards in human resource development (HRD) research are studies that test theoretically developed hypotheses and use experimental designs. A somewhat typical experimental design would involve collecting pretest and posttest data on individuals assigned to a control or experimental group. Data from such a design that…

Studies of interventions' impact on reading self-efficacy have been conducted since the 1980s. The purpose of this project was to conduct a systematic review of these studies because the primary studies often yielded divergent results. Included studies entailed an intervention, addressed reading specifically, and reported explicit pre- and…

Today, with the development of science and technology and its rapid progress, the importance attached to science education has increased. This increase in interest has led to the development of the methods, techniques, and approaches that enable the students to be active, question and construct knowledge. The 5E learning model is one of them, and…

This study used video vignettes of historical episodes from documentary films as a context and instructional tool to promote pre-service science teachers' (PSTs) conceptions of the nature of science (NOS). The participants received explicit-reflective NOS instruction, and were introduced to techniques to be able to use scenes from documentary…

This article reviews all (quasi)experimental studies appearing in the first 19 volumes (1997-2015) of "Language Teaching Research" (LTR). Specifically, it provides an overview of how statistical analyses were conducted in these studies and of how the analyses were reported. The overall conclusion is that there has been a tight adherence…

This research aims to investigate the effect of computer-based teaching (CBT) on students' academic success. The research used a meta-analytic method to reach a general conclusion by statistically calculating the results of a number of independent studies. In total, 78 studies (62 master's theses, 4 PhD theses, and 12 articles) concerning this…

In this meta-analysis, we synthesize the results of 24 studies using the Colorado Learning Attitudes about Science Survey (CLASS) and the Maryland Physics Expectations Survey (MPEX) to answer several questions: (1) How does physics instruction impact students' beliefs? (2) When do physics majors develop expert-like beliefs? and (3) How do…

The purpose of the study was to meta-synthesize research findings on the effectiveness of problem posing and to investigate the factors that might affect the incorporation of problem posing in the teaching and learning of mathematics. The eligibility criteria for inclusion of literature in the meta-analysis was: published between 1989 and 2011,…

Scholarly discourse has emphasized the need for culturally competent practices. Additionally, multicultural self-efficacy has been found to be critical in working with clients from diverse backgrounds, however, there is a relative paucity of literature on how to teach counselor trainees to be culturally competent and self-efficacious (Kim &…

Background: The process of problem solving is difficult for students; thus, mathematics educators have made multiple attempts to seek ways of making this process more accessible to learners. The purpose of this study was to examine the effect size statistic of utilizing exploratory computerized environments (ECEs) to support the process of word…

This report summarizes the complex research literature on quantitative methods for assessing how impacts of educational interventions on instructional practices and student learning differ across students, educators, and schools. It also provides technical guidance about the use and interpretation of these methods. The research topics addressed…

In this research, parents and children participated in a comprehensive book reading intervention designed to improve children's literacy. Over eight weeks during the summer, children in the intervention condition were encouraged to read one book weekly and parents were trained to foster reading comprehension. Forty-eight Grades 3 and 5 children…