Explores optimal foraging theory, derived from evolutionary ecology, for its potential to clarify and operationalize studies of scholarly communication. Metaphorical parallels between subsistence foragers and scholarly information seekers are drawn. Hypotheses to test the models are recommended. The place of ethnographic and bibliometric…

Statistical methods for program evaluation with nonexperimental data are reviewed with emphasis on circumstances in which nonexperimental data are valid. Three solutions are proposed for problems of selection bias, and implications for evaluation design and data collection and analysis are discussed. (SLD)

Presents a theoretical formulation that integrates, within the framework of expectation states theory, theories of the emergence of power-and-prestige orders in status-heterogeneous and homogeneous task-oriented groups. Discusses a model based on this theoretic formulation. Offers a model for predicting participation rates in open interaction…

Clarifies the idea of prediction in science teaching by distinguishing between the two extremes of guessing and making logical deductions. Discusses the use of predictions in testing teachers' and students' explanations. (MDH)

Dismissing research that is not theory driven, hypothesis testing, or generalization producing does injustice to the variety of contributions that qualitative research can make. Studies conducted through qualitative approaches are reviewed to summarize the desirable outcomes that can result. No research model has a monopoly on quality. (SLD)

Describes a study conducted at the Dutch Open University to determine students' actual use of embedded support devices (ESD). Topics addressed include a theoretical background; research hypotheses; the use of student interviews; quantitative and qualitative aspects of ESD use; student characteristics; study success (i.e., final examination…

Describes a study of undergraduates that examined the effects on retention of the screen location of information displayed in computer-assisted instruction (CAI) for Spanish. Three treatment groups are described: (1) text was relevant to graphical information; (2) text was at the upper middle section of the screen; and (3) text was random. (32…

Discusses five common myths about statistical significance testing (SST), the possible erroneous and harmful contributions of SST to educational research, and suggested alternatives to SST for mathematics education research. (Contains 61 references.) (MKR)

Presents two statistical topics and examples of their use in natural resource monitoring. The first topic deals with use of correlated observations in calculations of variance estimates for a regional mean, required sample size determination, and confidence intervals. The second topic concerns the use of Bayesian techniques in hypothesis testing.…

Describes software which was developed to help collaborating pupils test hypotheses. Discusses use of the software by 9-14 year-old pupils in Scotland, comparing their activity with that of similarly aged pupils who worked with otherwise equivalent software which lacked any prompts. (Author/AEF)

Describes a multiple case study that was used to evaluate hypotheses on the critical success factors for online course resources in a Singapore tertiary setting. Discusses educational media; human factors pertaining to instructors; technical competency of students and instructors; mindsets about learning; collaboration; and information technology…

Reviews several teaching methodologies in terms of negative affect. Findings indicate that in those situations where students have little incentive to do well or admit that they wish to do poorly, increased negative affect can motivate them to function at a level of operational tension and achieve optimum learning and performance. (36 references)…

Investigates the effects of tutor gender in interaction patterns in postgraduate university seminars and focuses on the discourse patterns of two of these classes. The female tutor used more minimal responses and called on students more often by name and gaze than the male tutor; she occupied less floor-space than the male tutor, and her speaking…

Presents a case study comparing a native-speaker undergraduate's performance on an examination and a coursework essay. Relational analysis facilitated text-linguistic comparison of two texts. The study contrasts an adequate handling of material in memory in examination conditions with the uncertain handling of difficult source materials. (40…

Supports the theory of level ordering by demonstrating, on the basis of productive morphology and phonology, that Turkish has four lexical levels. The first is the principle of Level Economy, which accounts for systematic exceptionality. The second is Level Prespecification, which exempts a root entirely from early lexical levels. Both of these…