In an effort to overcome deficiencies in teaching molecular biology at school, a workshop in an out-of-school laboratory including only authentic experiments was developed. Evaluation of 337 A-level 12th graders followed a quasi-experimental design, with one hands-on group, two non-experimental control groups (at school/in the laboratory), and one…

This paper comments on strengths and weaknesses of the papers on communities of practice in this special issue of "Technology, Pedagogy and Education." First it discusses the character of communities of practice and the question of whether schools are environments that are conducive to the development of teacher communities of practice. It then…

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 the study was to discern the beliefs of pre-service science teachers (PST) concerning science technology and their implications in society. A quasi-experimental design was used. The results indicate that students who experienced Science Technology and Society (STS) approach perform better than students enrolled in section where…

Marine education research designs are discussed, and student learning outcomes while monitoring a coral reef is evaluated. Changes in environmental knowledge and attitudes, ecological intention to act, and direct reef experience were investigated. Differences between student pre-test and the post-test responses were observed, and analysis is…

In the No Child Left Behind Act and the What Works Clearinghouse, the federal government has attempted to establish guidelines for the type of education research that U.S. schools should consider in selecting instructional programs and resources. The government's clear preference for the medical model--a powerful research design in such fields as…

Pedagogical intervention regarding engagement with natural, artistic and moral beauty can lead to an increase in trait hope. In a quasi-experimental design with college students the intervention group showed significantly higher gain scores on trait hope than did the comparison group; the effect size was moderate. The experimental group also…

The purpose of this research was to investigate the effects of formative assessment and learning style on student achievement in a Web-based learning environment. A quasi-experimental research design was used. Participants were 455 seventh grade students from 12 classes of six junior high schools. A Web-based course, named BioCAL, combining three…

This article examines the relevancy of large-scale, quantitative methodologies in middle grades education research. Based on recommendations from national advocacy organizations, the need for more large-scale, quantitative research, combined with the application of more rigorous methodologies, is presented. Subsequent sections describe and discuss…

The National Study of Living-Learning Programs (NSLLP) survey instrument was designed to assess college environments and student learning and development outcomes associated with participation in living-learning programs. Data from the NSLLP show that students in living-learning programs demonstrate higher self-reported engagement and outcomes…