Based on key word counts from summaries in the ERIC database and article analysis of the 1975, 1985, and 1995 volumes of Research in Science Education, certain trends appear in the style of research in science education. Trends include the move from brief, controlled, laboratory-style experiments to lengthy observations and descriptions of…

Addresses the use of subjective judgment in research that involves statistical/quantitative methods with regard to four aspects of quantitative research: (1) design; (2) preliminary analyses; (3) general analyses; and (4) specific analyses. (Contains 37 references.) (ASK)

Examined the effect of complex sampling of items on the measurement of differential item functioning (DIF) using the Mantel-Haenszel procedure through a Monte Carlo study. Suggests the superiority of the pooled booklet method when items are selected for examinees according to a balanced incomplete block design. Discusses implications for other DIF…

With the increased popularity of qualitative research, researchers in counseling psychology are expanding their methodologies to include mixed methods designs. These designs involve the collection, analysis, and integration of quantitative and qualitative data in a single or multiphase study. This article presents an overview of mixed methods…

Community is widely acknowledged as a fundamental aspect of social work practice, and this formulation distinguishes social work from other professions. Because of this long-standing tradition, social work needs to make a greater investment in producing scientific knowledge to enable community change and to incorporate community context into…

Hornworms are good assay organisms for leaf toxins, and can be raised on an artificial medium ("chow"), consisting of corn meal, soy flour, dry milk, yeast and other additives and preservatives. The hornworm assay is less useful in ecological and toxicological research, but is very useful in learning about experimental design and hypothesis…

A Monte Carlo study extended the research of MacKinnon, Lockwood, Hoffman, West, and Sheets (2002) for single-level designs by examining the statistical performance of four methods to test for mediation in a multilevel experimental design. The design studied was a two-group experiment that was replicated across several sites, included a single…

In an experimental design involving two auditorily presented competing commands (one to each ear), 144 right-handed subjects (72 male and 72 female) were asked to provide motor responses. Half of each group of subjects was responding with their right hand and the other half with the left. The test was applied in the subjects' native language…

In this article, I argue that when design and intervention are central to the research process, context as a construct is problematized. How we define context can facilitate or impede our ability to construct rich and veridical accounts of learning. A design stance may predispose us to less profitable notions of context. I present the advantages…

The world regards AIDS as the most disastrous health threat in the world. HIV/AIDS- related issues amongst adolescents were initially neglected due to the visible impact of this pandemic on babies and adults. Adolescents' behavior is however regarded as high-risk because of their involvement in sexual activities from a young age. The purpose of…

"Evaluation Theory, Models, and Applications" is designed for evaluators and students who need to develop a commanding knowledge of the evaluation field: its history, theory and standards, models and approaches, procedures, and inclusion of personnel as well as program evaluation. This important book shows how to choose from a growing…

Statistical reform in school psychology research is discussed in terms of research designs, measurement issues, statistical modeling and analysis procedures, interpretation and reporting of statistical results, and finally statistics education.

In spite of the relative success of equal opportunity laws on women's status in the workplace, we know little about the influence of such legal interventions on people's attitudes and beliefs. This paper focuses, in particular, on how sexual harassment policy affects men's beliefs about the gender hierarchy. We employ an experimental design in…

Learning how to conduct qualitative research may seem daunting for those new to the task, especially given the paradigm's emphasis on complexity and emergent design. Although there are guidelines in the literature, each project is unique and ultimately the individual researcher must determine how best to proceed. Reflexivity is thus considered…

This commentary considers some of the challenges of applying mixed methods research in undergraduate research degrees, especially in professions with a clinical health focus. Our experience in physiotherapy academia is used as an example. Mixed methods research is increasingly appreciated in its own right as a "third paradigm," however the success…