Uses trenoids, which are toothpicks colored with ink markers to represent a single taxa of organisms to illustrate ecological concepts in a student-centered learning environment. (YDS)

A taxonomy of computer-based speech training systems is presented, based on the physical source of feedback, standards of evaluation, level and type of detail on which feedback is based, and the form and instructional context of feedback. Reasons for selecting a particular approach are discussed in relation to existing systems. (Author/JDD)

Reviews approaches for categorizing outcome criterion measures in the human services. Suggests a multidimensional paradigm based on conceptualizations advocated in the literature. Discusses paradigm's implications for rehabilitation practice. (Author/ABL)

Holton critiques Kirkpatrick's four-level evaluation model and presents a new model that accounts for primary intervening variables. Kirkpatrick argues that the criticism fails to account for his model's practical utility. Holton elaborates on the distinction between a model and a taxonomy. (SK)

A framework is presented to document the process of category development. This two-dimensional model designed to facilitate the documentation of procedures used to generate categories specifies components associated with the development of categories and addresses the temporal aspects of category development. A study of preservice teachers…

Emotional characteristics of gifted children are examined. Frameworks developed by G. Betts and M. Neihart and by A. Roeper, which classify children by features of their characteristic emotional response, are described. Gifted children's unusual levels of sensitivity and intensity are noted and illustrated with a case example. (JDD)

This article describes the strengths and weaknesses of different models of classification (primarily monothetic and polythetic) and then focuses on cluster analysis as a method of pursuing a polythetic model. Design features that need to be incorporated in a cluster analytic study are discussed in relation to theory formulation, internal validity,…

Based upon a review of literature on classroom play and observations of two girls' free play in a nursery school classroom, posits a new model for describing classroom play. Play can be understood in terms of a progression of a range of simulations that involve the influences of materials, social relations, real-world experience, and decisions…

Presents a mechanism for organizing and manipulating groups of nodes and links in large World Wide Web sites. Topics include the Web as a hypertext system, information-retrieval problems, a model for organizing Web sites based on perspectives, a prototype system, versioning, configuration management, parallel activities, and future plans.…

Examines basic issues of data mining using the theory of rough sets, a recent proposal for generalizing classical set theory. Demonstrates that a generalized rough set model can be used for generating rules from incomplete databases. Discusses the importance of rule extraction from incomplete databases in data mining. (AEF)

A classification system for risk communication can serve two major purposes: it provides a practical guide to techniques and establishes a framework for further development. By using traditional models of communication elements and management operations, this taxonomy has the advantage of being more readily adapted to the needs of environmental…

People categorize items and concepts according to a prototypical image they build in their mind of what it is that represents the particular item or concept in question. The article argues that the notion of prototypicality has important implications for a discussion of genre. (35 references) (Author/CK)

Explored the assumptions implicit in models reflecting three different approaches to missing survey response data using opinion data collected from Swiss citizens at four time points over nearly 2 years. Results suggest that the latently ignorable model has the least restrictive structural assumptions. Discusses the idea of "durable…

Two experiments tested a model of young children's induction that specified contributions of linguistic labels and perceptual similarity to children's induction. Results support model predictions and point to a developmental shift, from treating linguistic labels as an attribute contributing to similarity to treating them as markers of a common…

Three developmental connectionist models simulate a purported shift from "featural" to "correlational" processing in infant categorization (models: Gureckis & Love, 2004/this issue; Shultz & Cohen, 2004/this issue; Westermann & Mareschal, 2004/this issue; empirical data: Cohen & Arthur, 2003; Younger, 1985; Younger & Cohen, 1986). In this article,…