The author presents a dichotomous key to 29 tree cones, fruits, and nuts of eastern United States. Students can use the key to identify at least 10 species in a 1-hour laboratory assignment. This key uses reproductive structures that are significantly different from others. These structures are durable enough to be used in the laboratory for many…

Presents 7 experiments with 118 undergraduates tracking multiple randomly moving visual elements under various conditions. Observers spontaneously grouped the target elements and directed attention toward this coherent nonrigid virtual object. Results support object-based theories of attention and show that perceptual grouping, a purely…

Item response theory (IRT) differential item functioning (DIF) methods used to determine the accuracy of item classification as biased or unbiased were studied. Results from simulations show that the iterative linking and ability scale purification method can be more effective than iterative linking alone primarily by reducing false negatives.…

Analysis of 61 successful grant applications for the federal Establishment of Departments of Family Medicine grants program identified three dimensions for classifying supported developmental activities: (1) the functional area of the activity; (2) the objectives of the activity; and (3) the strategies to be used to attain the objectives.…

Mathematical programing formulas are introduced as new approaches to solve the classification problem in discriminant analysis. The research literature is reviewed, and an illustration using a real-world classification problem is provided. Issues relevant to potential uses of these formulations are discussed. (TJH)

The cultural interplay in Africa between indigenous, Islamic, and Western legacies has given rise to four language types described as Afro-ethnic, Afro-Islamic, Afro-Western, and Western. Their definitions, tendencies, and characteristics in writing, geographic spread, demographic distribution, and functional value are discussed. (10 references)…

This paper argues that split-intransitive phenomena are better explained in semantic terms. A semantic analysis is carried out in Role and Reference Grammar, which assumes the theory of verb classification proposed in Dowty 1979. (49 references) (JL)

The learning disabilities (LD) of some gifted students are categorized as subtle gifted LD, hidden gifted LD, and recognized LD and then discussed. Use of instructional strategies that are effective with gifted students and with students who have learning disabilities is recommended. (DB)

A study attempted to clarify and extend the Biglan model, which uses faculty and departmental characteristics to classify intellectual disciplines, by applying it to previously unclassified disciplines. The model is found to be valid and useful for studying academic diversity in the higher education system based on current faculty data. (MSE)

Experiments with groups of 30 children (aged 3 through 6) and 32 children (aged 5 through 8) showed that (1) children use linguistic form-class information with familiar discrete objects, (2) children do not use linguistic form-class information with familiar food, and (3) children use only object category information with unfamiliar items.…

Ways for using computer-generated concordances in language teaching are suggested, specifically, a typology of exercise types. Kinds of information to be derived from a concordance (e.g., keyword-in-context type) are considered, followed by a discussion of the rationale and technical problems encountered. (10 references) (LB)

Three experiments examined the modes of processing that children and adults use in learning family-resemblance categories. Children and adults exhibited primarily analytic, rather than holistic, modes of learning. (PCB)

It is increasingly important to design local biomedical databases with attention to naming and classification standards. In some cases, common nomenclature will not be suitable, having been designed for another purpose, but much will be useful. Development of standard nomenclature is a social responsibility in the electronic biomedical community.…

Investigated cognitive ability, academic achievement, and social-behavioral competencies of 80 students referred for academic problems, and relationship of these data to learning disability classification decisions. Forty subjects were classified as learning disabled, and 40 were not identified as handicapped. Variables found to correlate most…

Reviews evidence concerning Interagency Committee on Learning Disabilities's proposal to include social skills deficits as specific learning disability (LD). Proposes three hypotheses: causal, concomitant, and correlational. Found most support for correlational hypothesis, but proposes fourth, functional relationship hypothesis as most…