An introduction to profiles is presented with examples provided to permit an overall appraisal of the potential of profiles, of the principles upon which they might be based, and of the problems that will have to be overcome if their potential is to be realized in practice. The larger scale examples of profiles discussed are the Scottish Pupil…

Social facilitation can be defined as the effect of an audience or coactors on performance. Research on social facilitation effects has produced some contradictory and confusing findings. Some studies have found that the presence of others enhances performance; other studies have found that the presence of an audience or coactors impairs…

Numerous forms and meanings of validity have been developed to provide researchers with the opportunity to assess the many potential sources of ambiguity that exist in any research finding. A Validity Network Schema (VNS) developed by Brinberg & McGrath (1982) is extended and elaborated in order to describe the components of the research…

Because cognition is inherently inaccessible to observers, researchers interested in cognitive approaches to argumentation frequently rely on self-reports for data. Opponents to self-reports argue that such data have very limited value. They claim that when subjects are put in a position where they have to tell more than they can know, they…

Educational researchers have claimed that the quantitative and qualitative approaches to educational inquiry are, indeed, compatible. However, it would be unfortunate to discontinue this debate. The quantitative-qualitative debate began with the interpretive approach to social inquiry. Dilthey argued that since cultural/moral sciences differ from…

Some of the requirements and consequences of rigorous and valid educational evaluation research are explored in terms of problems in achieving two types of external validity, population and ecological. The former refers to the generalizability of inferences to subjects not included in a study, while the latter is concerned with the…

This article outlines a data collection model designed by Riffel and associates. This model provides information which may assist district and school level personnel in facilitating the desegregation process. (Author/AM)

This study develops a three-stage model of the question-answering process and investigates several potential sources of extraneous variability. Discussion includes implications of findings concerning what it means to "use" library materials and services, adverbs used as response category labels, and subject's responses as predictors of…

The need to attend to both methodological and social concerns is demonstrated in two examples: one where the unchecked effects of the social consequences of a methodologically rigorous research design invalidated the evaluation and a second where explicit trade-offs between methodological rigor and social costs enabled the evaluation to proceed.…

A study of school district uses of evaluation and test data is used to illustrate the variety of ambiguities that can appear in qualitative data. Rules of evidence to distinguish valid and potentially nonvalid testimony are proposed. Uses of testimony in evaluation are discussed. (BS)

Discusses research into the external validity of simulation games used in education, i.e., the degree to which the games correspond to the real-life situations they are designed to simulate. An exploratory study examines the validity of a business game and potential problems of validity research are examined. (JJD)

A plea is made for increased field studies in education. Some of the problems are outlined: time and working hours, conflicting research paradigms, interpersonal relations in institutional settings, and financial and moral support. Examples are drawn from studies in South Australia. Solutions to the problem of reciprocal…

Provides information regarding the production and properties of the Dictionary of Occupational Titles (DOT) data to facilitate the assessment of their appropriateness for research. Reports on assessments of validity and reliability, a factor analysis of characteristics, and possible sex bias. Cautions about using the DOT to study changes in…

Methods of assessing effect size and the flows that limit their usefulness are discussed. The various statistical procedures for estimating variance accounted for are based on different statistical models producing sharply differing results. The methods reflect too greatly the particular study characteristics and hence have limited…

The major theme is that better and more productive studies could emerge if media research would move out of its traditional either-internal- or-external validity conflict. (Author/MV)