Magnitude of effect measures (MEMs), when adequately understood and correctly used, are important aids for researchers who do not want to rely solely on tests of statistical significance in substantive result interpretation. The MEM tells how much of the dependent variable can be controlled, predicted, or explained by the independent variables.…

By employing a concomitant variable, researchers can reduce the error, increase the precision, and maximize the power of an experimental design. Blocking and analysis of covariance (ANCOVA) are most often used to harness the power of a concomitant variable. Whether to block or covary and how many blocks to be used if a block design is chosen…

This paper discusses the integration of positivist single-subject design with interpretive, or naturalist, qualitative methods in the development of effective interventions for rural special education students. The resulting research/intervention design includes: (1) extending the normal baseline period from 3 to 10 days thus allowing the…

This paper focuses on methodological issues in designing and conducting a longitudinal study of teachers' careers, as being explored by the National Center for Education Statistics (NCES). The paper outlines the need for data in four areas (teachers' worklives, teacher quality, the context of teaching, and teachers' career paths) and identifies…

Two issues of concern in education are addressed: (1) how should educational research be carried out and (2) why do practitioners so often fail to heed the findings from educational research? The author uses the conceptualization of Stephen Pepper which distinguished four different hypotheses about the nature of the world (formism, mechanism,…

A description is given of an ongoing collaborative research effort consisting of a series of studies with 3- to 5-year-old children, designed for the purpose of: (1) identifying factors contributing to motor learning/performance during the development years, i.e., psychological, sociological, and experiential variables; (2) determining the…

A checklist of characteristics of effective mail questionnaires was developed that reflects some degree of consensus among experts in survey research and that can serve as a guide to novices designing a questionnaire. Journal and book sources of information about mail questionnaires were reviewed to yield 83 items in 7 categories that comprised…

Since about 1962, researchers have explored the effectiveness of educational software in the schools under various conditions, and many have concluded that computer assisted instruction (CAI) is effective. Many of the studies reviewed to support this conclusion, however, had design flaws. Reviews of educational software effectiveness studies have…

Developmental models currently used by child behavioral toxicologists and teratologists are inadequate to address current issues in these fields. Both child behavioral teratology and toxicology scientifically study the impact of exposure to toxic agents on behavior development: teratology focuses on prenatal exposure and postnatal behavior…

Despite years of litigation the desegregation of United States public schools remains unfinished. Even after court-ordered desegregation, a school district may remain segregated through various practices such as ability grouping and selective discipline of minority children. These second generation discrimination or resegregation practices have an…

This paper describes the development of a conceptual framework for conducting research using computer based interactive video and a generic disc as research tools. It is argued that computer based interactive video represents the beginnings of a truly computer based learning system. An altered version of the 1984 Grabowski and Whitney conceptual…

The study of teachers as decision-makers is a recent paradigm in educational research. This decision-making approach considers the teacher as an active professional engaged in various decision-making activities prior to and during instruction. This paper describes a naturalistic research design employed in a recent dissertation that investigated…

Because self-directed learning behaviors are inherently interwoven within a foundation of lifespan cognitive and contextual characteristics, researchers must examine the theory and application of self-directed learning not just as an externally-defined or self-perceived process but also as an internal process of continual development grounded in a…

This paper presents a global approach to the media comparison literature. Beginning with the pros and cons of media research, it discusses the results of both individual and meta-analysis research, compares the different methods researchers have used to determine media selection, and concludes with the most recent trends in media selection. It is…

This paper discusses the design, development, and results of a one-year pilot implementation of an emerging issues tracking system by the Southwest Educational Development Laboratory (SEDL) for state-level educational policymakers and decision makers known as SEDL-SCAN. SEDL-SCAN offers policy-makers lead time on crises by flagging emerging…