Professional practice is built on sound knowledge specific to each discipline. This knowledge is developed and validated through a process of scientific investigation or research. However, lack of knowledge about the research process acts as a barrier to applying evidence-based practice within the school setting. Understanding the components that…

Global economic transformations have never been as dramatic as in the twentieth century. Most countries have experienced radical changes in the standards of income per capita, technology, fertility, mortality, income inequality and the extent of democracy in the course of the past century. It is the goal of many disciplines--economics, history,…

This literature review discusses the need for rehabilitation organizations to become culturally competent and for rehabilitation research to reach and be utilized by minority populations. Sections address the incidence of disability in minority populations, the socially constructed nature of race, culture, and disability, cultural power and the…

Describes three classes of measurement techniques: (1) interviewing methods; (2) record retrieval procedures; and (3) observation methods. Discusses primary reasons for measurement error. Concludes that, although measurement error can be defined and controlled for, there are other design factors that also must be considered. (CFR)

School vouchers, particularly since the landmark U.S. Supreme Court ruling on the Cleveland program, are one of the most contentious issues in American education. Seemingly contradictory results across available studies have caused confusion among diverse audiences. The authors suggest that these divergent findings are, in part, due to three…

Too few researchers understand what statistical significance testing does and does not do, and consequently their results are misinterpreted. This Digest explains the concept of statistical significance testing and discusses the meaning of probabilities, the concept of statistical significance, arguments against significance testing,…

The efficiency and appropriateness of the cassette tape as a data collection medium was considered in this survey. A 19-item questionnaire was mailed to 117 agricultural teacher educators who had served at foreign locations. Most of the questions solicited qualitative data about their experiences, problems, and accomplishments. Respondents were…

Philosophical analysis was used to interpret a large-scale attitudinal survey that dealt with, among other factors, teachers' attitudes toward computers in the classroom. This analysis of the study considers the role of philosophical analysis in the context of empirical inquiry. To measure the impact of computers in the classroom on teachers in an…

Contends that the high quality of the probability sampling used by the International Association for the Evaluation of Educational Achievement (IEA) is due, in large part, to procedures developed by IEA's first statistical consultant, Gilbert Peaker. Concludes that the Peaker process is a first-class sample design. (CFR)

H.H. Spitz argues that interesting results from the preschool intervention of the Abecedarian Project continue to be disregarded. C.T. Ramey reiterates his earlier objections to Spitz's conclusions, and H.H. Spitz rejoins with specific objections to Ramey. (SLD)

Mountains of data over 10 years show that the educational sky is not falling. This article deplores critics' disregard of the Sandia Report, American policymakers' test-craziness and education/economic productivity obsessions, the overrated "Texas Miracle," National Education Goals, and weighty student backpacks. (MLH)

The Migrant Student Record Transfer System (MSRTS) is a nationwide computer-based communications network originally designed to transfer the health and educational records of migrant workers' children. This report assesses MSRTS data from September 1984 through June 1986 to determine the potential utility of such data for national studies of the…

This commentary on a previous article that demonstrates three ways of analyzing qualitative interview data (content, cultural models, and narrative analyses), discusses the need for greater articulation of the complexities of interpretation and a greater emphasis on verification procedures in early intervention qualitative research. (CR)

This report examines federal, state, and local databases containing information on migrant workers and their children, identifies their common characteristics, and assesses their potential utility to inform educational policy analysis. General criteria used to evaluate each database's strengths and weaknesses include standardization, reliability,…

Asserts that traditional approaches to multivariate analysis, including standard linear regression techniques, ignore the special character of count data. Explicates three suitable alternatives to standard regression techniques, a simple Poisson regression, a modified Poisson regression, and a negative binomial model. (MJP)