The effects of college environments on student achievement as measured by the three Graduate Record Examinations Area Tests were studied when the initial ability of students was controlled. (CK)

A method of two-stage clustering of literature based on citation frequency is applied to 5,065 articles from 57 journals in environmental and civil engineering. Results of related methods of citation analysis (hierarchical graph, clustering of journals, multidimensional scaling) applied to same set of articles are compared. Ten references are…

This study examined whether a synthesis of clinical and statistical data taken from psychoeducational reports completed on 42 boys referred to a child psychiatric outpatient department for school-learning problems would yield discrete clinical categories or clusters of children. Cluster membership and educational placement recommendations were…

Proposes a means for determining the similarity between search request formulations in online information retrieval systems, and discusses the use of similarity measures for clustering search formulations and document files in such systems. Experimental results using the proposed methods are presented in three tables. A reference list is provided.…

Young adults' rehearsal was serially and categorically organized. Older adults' rehearsal was nonstrategic. Results show that direct strategy measures provide more information about processes underlying age differences in memory than do outcome measures alone. (Author)

Discussion of hypermedia systems focuses on a comparison of two types of adaptive algorithm (genetic algorithm and neural network) in clustering hypermedia documents. These clusters allow the user to index into the nodes to find needed information more quickly, since clustering is "personalized" based on the user's paths rather than…

Addresses advantages and disadvantages of routinely assigning textbook questions. Offers four approaches for making these assignments more meaningful, less frustrating and more enjoyable for students, including use of clustered questions, peer teaching, cooperative work groups, and assignment mentors. Provides guidelines for effective use of…

Proposes random-effects regression model for analysis of clustered data. Suggests model assumes some dependency of within-cluster data. Model adjusts effects for resulting dependency from data clustering. Describes maximum marginal likelihood solution. Discusses available statistical software. Demonstrates model via investigation involving…

Discussion of clustering of documents and queries in information retrieval systems focuses on the use of a genetic algorithm to adapt subject descriptions so that documents become more effective in matching relevant queries. Various types of clustering are explained, and simulation experiments used to test the genetic algorithm are described. (27…

This article presents the results of a survey of elementary teachers (n=22) who used cluster grouping of gifted students within regular classrooms. Findings indicated general acceptance of clustering and that gifted students benefited from this provision. (DB)

Three age groups of 24 people each completed verbal word list tasks and spatial learning tasks 5 times each. Significant age differences were found for total recall and type of task. Younger subjects showed increased levels of clustering--organizing information according to semantic or spatial clusters. Age was not related to temporal order of…