Provides definitions for 31 commonly used polymer science terms. (JM)

Calls for a return to the conceptualization of Mannheim about generations and a parallel conceptualization concerning age groups. The usefulness of this approach is discussed in terms of the political sociology of age relations. Recommends precise definition and use of the terms cohort, generation, age grade, age stratum, age group, and generation…

Assessment of learning disabilities is traced. Among the critical issues examined are definitions, eligibility criteria, placement bias, and interpretation of P.L. 94-142 (The Education for All Handicapped Children Act) guidelines. Recommendations are offered for an adequate definition and determination of LD. Future directions, including…

The review cites research on adolescent depression (definitions, prevalence, diagnosis, etiology, associated clinical conditions, and treatment) and suicide (prevalence, classification, prediction and etiology, suicide prevention, and treatment). (Author/CL)

Discusses various issues/propositions designed to clarify the meaning of "educational quality." For example, it is indicated that quality and costs are not in a direct relationship, that quality may be viewed differently by different levels of educational administration, and that quality and equality are not necessarily in conflict. (JN)

Describes the variety of meanings given to the word "grammar," and focuses on differences between descriptive and prescriptive uses of the term. Considers the usefulness of grammar instruction, and argues for its inclusion in school curricula. Emphasizes the utility and applicability of grammar within all the social sciences and humanities. (KH)

This article systematically analyzes four widely used types of definitions for literacy and points out their usefulness for practitioners and implications for policy and practice. It is implied throughout that the accepted definition of literacy reflects the practitioner's philosophy of learning and influences practice. (Author/CT)

Because of the importance of community development in development strategies, both in Rhodesia and, more recently, Zimbabwe, this article looks at the concept in a historical perspective. In this perspective, three major phases can be identified: the period between 1890 and 1962; the period between 1962 and 1979; and 1980 to the present. (CT)

Rohner's analysis of the concept of culture is examined, considering in particular, his distinction between culture and social systems. His view is contrasted with that of Segall, who regards the concept of "culture" as redundant for cross-cultural psychology. It is argued that neither position is adequate, and possible resolutions are offered.…

Discusses the challenges of translating definitions of reading found in research into classroom practice. (FL)

Discusses properties of multiple attribute tree (MAT) and inverted file structures; establishes suitability of MAT data structure for bibliographic files using worst-case performance measures; provides arguments to establish MAT average case superiority; and proposes an efficient adaptation of MAT data structure to exploit special features of MAT…

Debate over the existence of mental illness may be abandoned if its two components (first, the conceptual status of psychological variables determining deviance and second, society's response to individuals exhibiting certain behaviors) are disentangled. Disagreement actually centers around professional prerogatives and the legal/ethical status of…

Describes the general principles of a nonexperimental learning theory-based courseware evaluation which calls attention to instructional sequences in the courseware to determine if the sequence is programed around learning principles. The results of using this type of evaluation for two computerized training devices are summarized. (MBR)

A study comparing the effectiveness of various parts of Merrill and Tennyson's model for teaching concepts showed that a presentation of examples and nonexamples in an expository presentation or in an inquisitory practice presentation enhances the acquisition of social studies concepts. The addition of a definition is not essential. (RM)

Explores incompatible operating systems as the basic reason why software packages will not work on different microcomputers; defines operating system; explores compatibility issues surrounding the IBM MS-DOS; and presents two future trends in hardware and software developments which indicate a return to true compatibility. (Author/MBR)