One of the major theoretical and practical developments in testing is latent trait analysis and item response theory. This report provides a guide for practitioners in understanding, evaluating, and using these developments to meet their testing needs. (Author)

The derivation of a general retrieval effectiveness measure is investigated. Inconsistencies in the definition of relative importance are resolved, and it is shown that the influence of the assigned weight on the effectiveness measure can produce counterintuitive results. An alternative effectiveness measure provided by the Marczewski-Steinhaus…

Presents a model for the geometric analysis of the relationship between information queries and information systems retrieval, and demonstrates the utility of this analysis by its application to six conventional information retrieval similarity measures and a seventh spreading activation measure. (Author/CLB)

Replies to Guttentag's commentary on Brainerd and others' research on forgetting. Discusses measurement of forgetting, differentiation of storage from retrieval factors, and ramifications of findings for strategic or process theories of memory development. Considers the role of research on forgetting in child development research. (BC)

Needs assessment almost always focuses on the assessment of change, change from the real to the ideal, present to future, actual to expected, and so on. As a result, most definitions of need can be represented by a mathematical-style change formula. However, most presentations of the concept of change do not completely represent the complexity of…

Proposes a new definition of the nuclear zone of a Bradford or Leimkuhler curve. The mathematical rationale is outlined, and examples of the application of this technique to citation analysis are given. (15 references) (CLB)

Analyzes the evolution of Chinese national examinations with the "catastrophe" model. Goals, content, form, and process of exams were influenced by social and political forces. Competence over 4,000 years of Chinese history was defined as military prowess, Confucian-style scholarship, Western-style military expertise, proletarian…

Summarizes earlier research in the theory of information flow and its application to practical situations and to the relationship between information and the user's knowledge state. A model for creating information profiles is presented which mathematically represents changes in decision making effectiveness as a function of specific documents.…

Explains traditional notions of efficient behavior; applies them to libraries and information centers; discusses how we measure efficiency; describes data envelopment analysis, a mathematical model designed for use with nonprofit organizations to measure efficiency through a weighting scheme; and discusses its use in school media centers.…

Regarding shortcomings in guaranteed tax base (GTB) school aid formulas, especially difficulties in measuring district fiscal capacity, the authors cite Michigan data to argue that inequities resulting from measurements using property wealth can be mitigated by property tax relief, intrastate cost differentials, and a unique aspect of Michigan's…

Barcikowski has provided tables for use in situations where means are to be used as the unit of analysis. This article argues that the conditions specified for use of these tables are not practical. It explicates a methodology for carrying out analyses based on group means. (Author/JAZ)

Discusses the use of district inhabitants' income, rather than property values, to measure school district wealth when allocating state aid. Examines data collection and other methodological problems, derives three formulas combining income and property measures for aid allocation, and tests each formula's effects using data from New York State.…

Discussion of the growth of the Internet focuses on the rate of growth based on three measurements of changes in reachable Internet services: (1) the rate at which sites initiate network connectivity; (2) the rate at which sites become directly connected; and (3) the rate at which sites distance themselves, usually for security reasons. (Contains…

This paper argues that no single measurement strategy serves all purposes and that applying methods and techniques which allow a variety of data elements to be retrieved and juxtaposed may be an investment in the future. Item response theory, Rasch model, and latent trait theory are all approaches to a single conceptual topic. An abbreviated look…