Orton-Gillingham (OG) and Orton-Gillingham-based reading instructional programs are commonly implemented reading programs in the United States. Twelve studies that employed quasi-experimental or experimental designs are reviewed. These studies included elementary students, adolescents, and college students. Of the 12 studies, 5 reported that the…

This article explores the effectiveness of writing to help nurse-learners develop critical thinking in an asynchronous, online learning environment. The formal written assignments of students in an online nursing health assessment program were analyzed for evidence of critical thinking according to Johns' Model of Structured Reflection (Johns,…

Evaluating the effects of interventions is among the most critical issues faced by the field of human resource development today. This study addresses the potential of multisource feedback for training evaluation. The central research question is whether or not it is possible to measure change in work behavior, as a result of training, with…

Simulations are widely viewed to be effective pedagogical tools; however, evidence concerning their effects on student learning has been largely anecdotal or unsystematic in nature. In addition, most of the literature focuses on fairly complex simulations that require more class time and demand more of students than may be possible in many…

This study aims at understanding how the use of different reading activities affects readers' comprehension of short stories. Forty-seven students with an advanced level of English proficiency participated in the study where a quasi-experimental research design was pursued. The experimental and control groups of students completed different sets…

To provide the first interstate quasi-experimental assessment on the power of content integration in building reading skills, the authors studied the effects on reading comprehension of GeoLiteracy--a K-8 package of 85 lessons that teaches geography in the context of practicing reading and writing skills. Ninety-six third through eighth grade…

Among the different types of experimental design are two general categories: true experimental designs and quasi- experimental designs. True experimental designs include more than one purposively created group, common measured outcomes, and random assignment. Quasi-experimental designs are commonly used when random assignment is not practical or…

The purpose of this handbook is to encourage and assist women's studies directors and faculty to perform or obtain evaluations of their programs in order to assist in their decision making needs, and to know how, when, and to what ends program evaluation can be used. Evaluation is defined and described. Five major approaches are listed:…

The authors suggest that there may be a phenomenon of posttest sensitization which could affect the generalizability of experimental results in the way that pretest sensitization does. A quasi-experimental design is proposed to test for such a phenomenon. (JKS)

Net impact estimates of Comprehensive Employment and Training Act (CETA) programs vary widely and can be explained by the different evaluation methodologies used. Estimates are sensitive to the inclusion of recently unemployed persons in the comparison sample and assumptions about the time of decision to enroll in CETA. (GDC)

Methods for selecting relevant and appropriate quasi-experimental studies for inclusion in research synthesis using the threats-to-validity approach are presented. Effects of including and excluding studies are evaluated. (BS)

A two-step control procedure is demonstrated in which the experimenter first identifies the most appropriate control group for the investigation and then employs multiple covariates to adjust the dependent measure(s) for these sources of error. This procedure is demonstrated in a learning strategy experiment. (GK)

The purpose of this study is to investigate the effects of the Engagement, Exploration, Explanation, Extension, and Evaluation (5E) learning cycle, conceptual change texts, and traditional instructions on 8th grade students' understanding of photosynthesis and respiration in plants. Students' understanding of photosynthesis and respiration in…

This longitudinal study examined the effects of providing an accelerated mathematics curriculum in heterogeneously grouped middle school classes in a diverse suburban school district. A quasi-experimental cohort design was used to evaluate subsequent completion of advanced high school math courses as well as academic achievement. Results showed…

This paper presents the development and evaluation of a web-based lesson--Lesson Rainbow. This lesson features multiple representations (MRs), which purposefully deliver concepts in relation to distinctive disciplinary subject areas through story-based animations that are closely related to learners' life experiences. The researchers selected 58…