Six estimators of treatment effect when assignment to treatment groups is based on the covariate are compared in terms of empirical standard errors and percent relative bias. Results show that simple analysis of covariance estimator is not always appropriate. (Author/GK)

Two computer-intensive procedures are presented for dealing with non-random selection in the development of samples for experimental, quasi-experimental, and survey designs associated with educational research. The procedures are randomization tests to clarify treatment effects and bootstrap techniques to estimate the uncertainty of…

Purpose: This article describes the progress of our study to examine the advantages and costs of using self-managed nurse aide teams in nursing homes, steps that are being taken to implement such teams, and management strategies being used to manage the teams. Design and Methods: A quasi-experimental design is underway where certified nurse aide…

We rely a great deal on the schematic descriptions that represent experimental and quasi-experimental design arrangements, as well as the discussions of threats to validity associated with these, provided by Campbell and his associates: Stanley, Cook, and Shadish. Some of these designs include descriptions of treatments removed, removed and then…

The effectiveness of Tennessee EdTech Launch (TnETL), a statewide technology program designed to meet the No Child Left Behind (NCLB) mandate, was investigated in this matched treatment-control quasi-experimental study. The goal of the program was to provide full-time, on-site technology coaches to prepare teachers to create lessons that engage…

This quasiexperimental research studies the effect of socioeconomic status (SES), language learning, and culture on gifted Hispanic children's performance in an alternative developmental scale (Qualitative Use of English and Spanish Tasks) of cognitive ability for generating developmental profiles. Results show the effect of SES and language…

Purpose: This study concerns one component of the ability to provide person-centered care: the cognitive skill of perceiving others in relatively complex terms. This study tested the effectiveness of a social motivation for increasing the number of psychological constructs used to describe an unfamiliar senior citizen. Design and Methods:…

This study was designed to compare teachers certified in South Carolina that were trained in two different methods: through traditional college preparation programs and through the Program of Alternative Certification for Educators (PACE). This study explored three research questions. The first question addressed differences in pedagogical…

The purpose of this study was to demonstrate the effectiveness of web-based homework (WBH) assignments on the overall comprehension measured by the final examination in a first year college algebra course. This study included 1653 students over a three year period. Results indicate a strong correlation between achievement on the WBH assignments…

Introduction: In recent decades there has been a well warranted interest in the topic of self-regulated learning, or more recently, in developing the competency "learning how to learn". Research has shown substantial differences between those students and teachers who work along these lines, as compared to others who do not. This paper studies the…

This study is an action research based both on quantitative and qualitative research techniques carried out with a group of fifth grade students in K"r,ehir during the 2003-2004 education year. In the study, the main purpose was to improve historical time concept and chronology perceptions among fifth grade students. Students' interests, reactions…

The purpose of this study was to investigate the effects of formative assessment as a teaching strategy through an internet-mediated assessment portal (ImAP) on preservice elementary student understanding of kinematics graphs as opposed to traditional lecturing. A quasi-experimental design was used for this purpose. Findings revealed that…

The effects of service-learning on the academic attainment of rehabilitation services students were examined using a quasi-experimental design. One hundred and thirty senior rehabilitation services students enrolled in the medical aspects of disabilities course, 65 with service-learning and 65 with classroom-only instruction. The same instructor…

To enhance student performance, prevent attrition, and build a learning community, two courses were linked together by requiring concurrent enrollment. "Writing Effectively," an upper-division composition course, was linked with "Abnormal Psychology," an upper-division clinical psychology course, requiring concurrent enrollment in both. In short,…

The purpose of this research was to determine whether using an audience response system improves student achievement. Audience response systems are computer-based tools for use in classrooms for the purpose of providing feedback to students on questions asked during instruction. This study used a quasi-experimental design to determine if students…