The randomized control trial (RCT) is the primary experimental design in education research due to its strong internal validity for causal inference. However, in situations where RCTs are not feasible or ethical, quasi-experiments are alternatives to establish causal inference. This paper serves as an introduction to several quasi-experimental…

We present an aggregation scheme that increases power in randomized controlled trials and quasi-experiments when the intervention possesses a robust and well-articulated theory of change. Intervention studies using longitudinal data often include multiple observations on individuals, some of which may be more likely to manifest a treatment effect…

African-American boys who receive exclusionary discipline (i.e. in- or out-of-school suspensions) are overrepresented at the elementary (kindergarten through fifth grade) level. Although African-American boys comprised only 15% of the population of this school, they accounted for 70% of the exclusionary discipline incidents. This…

Purpose: The purposes of this study were to: (a) examine the impact of the Silverman and Solmon article (1998) on how researchers handle the unit of analysis issue in their field-based intervention research in physical education in the United States and summarize statistical approaches that have been used to analyze the data, and (b) provide…

Underlying all What Works Clearinghouse (WWC) products are WWC Study Review Guides, which are intended for use by WWC certified reviewers to assess studies against the WWC evidence standards. As part of an ongoing effort to increase transparency, promote collaboration, and encourage widespread use of the WWC standards, the Institute of Education…

Rigorous scholarship is essential to the continued growth of group work, yet the unique nature of this counseling specialty poses challenges for quantitative researchers. The purpose of this proposal is to overview unique challenges to quantitative research with groups in the counseling field, including difficulty in obtaining large sample sizes…

This article discusses the effectiveness of the Sexual Attitude Restructuring (SAR) curriculum in developing positive sexual attitudes amongst Taiwanese graduate students in human sexuality. Through purposive sampling, 32 graduate students in human sexuality were selected to participate in the study. Before and after providing participants with a…

This study considers the impact of using a series of Mindset interventions during a five-day outdoor personal development (OPD) course. Self-efficacy, resilience and Mindset were measured pre course, post course and one month post course. It was hypothesised that both experimental and control groups would increase their self-efficacy and…

Background: African American women have the highest risk of death from heart disease among all racial, ethnic, and gender groups due to sedentary behaviors. Purpose: This article describes an intervention among 2 groups--a program group and an information group (intervention and comparison)--that assessed cardiovascular risk factor knowledge among…

Many of the top 21st century careers require advanced mathematics skills. However, mathematics is a known area of difficulty for students with disabilities (SWD), as they struggle in this area at a higher rate than peers without disabilities (O'Brien, 2016). Mathematical word problems incorporate comprehension of written language, an area known to…

This quasi-experimental pretest/posttest control group study design evaluated the effects of a multi-component educational intervention on the well-being of older adults. Participants were members of a senior community center in the Midwestern United States. The sample consisted of 45 participants assigned to either a treatment or control group.…

Carnegie Learning's Cognitive Tutor®The purpose of this study is to determine whether there is a statistically significant difference between pre-test and post-test achievement scores when Compass Learning's Odyssey Math® is used together with Carnegie Learning's Math Cognitive Tutor® in a mathematics intervention program at ABC Middle School. The…

The purpose of this quasi-experimental research study was to evaluate the effectiveness of art therapy for teaching social skills to children with autism spectrum disorder (ASD). The program we tested was structured to provide a therapeutic setting for children to discuss difficulties they experience in their social interactions, and give them…

Elementary students spend an average of five and a quarter hours per day seated on a hard surface which provides little sensory input and possibly contributes to discomfort. Sensory integration was found to improve executive functioning skills in elementary students by helping their comfort level at being seated. This quasi-experimental study…

"Professional Development Tools to Enhance the Abilities of Veteran Teachers in Pre-K Through Eighth Grades" examined the variety of professional development tools available to veteran educators. The quasi-experimental study allowed veteran teachers to participate in a pretest survey consisting of questions about teachers' desire for…