Most researchers using analysis of variance (ANOVA) use a fixed-effects model. However, a random- or mixed-effects model may be a more appropriate fit for many research designs. One benefit of the random- and mixed-effects models is that they yield more generalizable results. This paper focuses on the similarities and differences between the…

The popularity of sample surveys in evaluation and research makes it necessary for consumers to tell a good survey from a poor one. Several sources were identified that gave advice on how to evaluate a sample design used in a survey study. The sources are either too limited or too extensive to be useful practically. The purpose of this paper is to…

This paper helps researchers develop criteria for conducting surveys. Cost considerations frame the paper's suggestions. Specifically, the text advises that researchers consider the human and material resources needed, type of survey instrument, medium for conducting the survey (mail, telephone, personal interview, etc.), data analysis…

This report compares three approaches to descriptive research, focusing on the kinds of descriptions developed and on the methods used to develop the descriptions. The main emphasis in all three approaches is on verbal data. In these approaches the importance of interpretation and its intuitive nature are emphasized. The three approaches, however,…

This paper provides guidlines for formally evaluating extended-day programs. Extended-day programs are defined as those attended before and after school by children between the ages of 5 and 14. A seven step evaluation process, in which the practitioner responsible for program administration plays a key role, is outlined and discussed. (Author/RH)

Considers the doubts the author has had about the design of an award winning study, focusing especially on a researcher's obligation to help the teachers with whom the researcher is working, even at the risk of jeopardizing a study's design. Traces the way that her engagement with that question has led to her current professional commitments. (SC)

Evaluation studies on educational questions attempt to provide answers in the form of conclusions or inferences which are derived from the information collected. Valid inferences are a result of careful research design for the study, and may be causal, descriptive, value-oriented, or probabilistic. Basic steps in designing an evaluation study are…

This paper presents five designs (three one-group and two two-group) which can be effectively employed to study computer-based methods in non-laboratory settings, including actual classroom implementation, where a non-treatment control design may not be feasible. These designs are sequential analysis, value-added analysis, non-equivalent dependent…

This paper is based on the premise that relatively little is known about how to improve validity in qualitative research and less is known about how to estimate validity in studies conducted by others. The purpose of the study was to describe the conceptualization of validity in qualitative inquiry to determine how it was used by the author of a…

This brief paper was prepared as a starting point for employers considering the adoption of a new management initiative for working parents. It is not an exhaustive outline of all considerations in the decision-making process, nor does it provide solutions to all the known pitfalls. It does, however, suggest the potential scope and complexity of…

Only a limited number of single-subject studies exist in the literacy field, despite the upsurge of such studies in a wide variety of disciplines. The phrase "single-subject" refers not so much to the number of subjects, but to the way the data are analyzed: each subject's responses are examined individually; they are not averaged with…

Noting that teachers' research is found in personal journals, professional conversations, computer networking, formal research studies, and publications or presentations, this paper answers, in outline form, a series of questions on the expanding role for special needs educators. These questions are: what "teacher as researcher" means;…

This paper addresses one area of conflict in decisionmaking in computer-based instruction (CBI) research: the relationship between the researcher's definition of CBI either as a medium or as an integrated system and the design of meaningful research questions. (A medium is defined here as a device for the delivery of instruction, while an…

Perhaps no facet of long-term care (LTC) research has received as much attention as the evaluation of community-based LTC demonstrations. Recent thinking has called into question the validity and policy relevance of the findings of these studies, yet their efforts will continue to receive strong financial backing. The time has come for LTC…

Hypermedia computing now makes it possible to integrate media into interactive programs with the potential to expand the use of visualization in science, art, and other professional disciplines. After an overview of some visualization issues in hypermedia, a research project called "HyperGlyphs" at Rensselaer Polytechnic Institute in…