Arguing that relevance judgments are fundamental to the design and evaluation of all information retrieval systems, and that a consensus on the definition of the central concept of relevance has not been reached, this paper begins by critically reviewing four approaches to the problem of defining relevance: (1) the system-oriented approach…

In 1976, the Association of American Medical Colleges developed a map-like model to describe the global picture of the U.S. medical school similarities with respect to two loosely defined concepts: an institutional emphasis on research and an emphasis on clinical and graduate medical training. This study is an attempt to replicate the results of…

This paper examines the current state of voir dire procedures (the process in which prospective jurors are questioned about possible prejudgment or bias) used to detect racial attitudes in court cases involving black defendants and compares voir dire questions allowed and disallowed by the court. Data based upon an assessment of racial attitudes…

One of the major assumptions of latent trait theory is that the items in a test measure a single dimension. This report describes an investigation of procedures for forming a set of items that meet this assumption. Factor analysis, nonmetric multidimensional scaling, cluster analysis and latent trait analysis were applied to simulated and real…

This paper discusses a longitudinal, exploratory study of developmental dimensions related to object permanence theory and explains how multidimensional scaling techniques can be used to identify developmental dimensions. Eighty infants, randomly assigned to one of four experimental groups and one of four counterbalanced orders of stimuli, were…

The question of whether test factor structure is indicative of the test item hierarchy was examined. Data from 1,000 subjects on two sets of five bivalued Law School Admission Test items, which were analyzed with latent trait methods of Bock and Lieberman and of Christoffersson in Psychometrika, were analyzed with an ordering-theoretic method to…

Investigated are the multidimensional differences in freshman perceptions and experience of the academic and nonacademic aspects of college associated with varying amounts of informal contact with faculty. Discriminant analysis indicated that factor dimensions, termed Interest Value and Practical Appeal, best distinguished between groups of…

This study was undertaken to illustrate the application of a multidimensional individual-differences approach to credibility judgments as an alternative to factor analysis. Judgments of aspirants to the presidency of the United States were specifically studied. Ten stimulus-persons, varying in sex, political affiliation, and (apparent) ideology,…

This study investigated (1) relationships between reading comprehension, IQ, and equivalence range (ER) and (2) categorizing styles through multidimensional scaling and varimax rotation analysis. One hundred and six male and 97 female sixth-graders comprised three reading groups according to Metropolitan Achievement Test, Reading subtest, and Otis…

Indicates that membership in pausing and skimming clusters appears to relate to text comprehension, grade level, and rated academic ability, but that these relationships are not all simple or direct. Finds that the cluster-analytic approach provides a useful empirical adjunct to current theoretical perspectives on text analysis and reading…

Two quasiexperimental designs--nonequivalent dependent variable and reversed treatment designs--illustrate pattern matching logic as a basis for evaluation, examining college health services. Three pattern matches are significant: (1) program pattern match indicates implementation; (2) measurement match assesses test validity; and (3) effect…

Multidimensional scaling (MDS) was used to derive the dimensions underlying student ratings of instruction. A weighted MDS revealed that departmental affiliation, course structure, and intensity of teaching were particularly salient to the raters. The findings are discussed in light of the current literature on student ratings of instruction.…

Reports results of a comparison of correlational and multidimensional scaling techniques as tools for analyzing the perceptions of three groups of mathematics teachers (at high school, vocational school, and university levels) of the relative importance of curricular objectives. Discusses the relationship of the two analyses and the implications…

Analyses of students' responses to Students' Evaluation of Education Quality (collected 4,471 courses) focused on two interrelated issues: the multidimensionality of student ratings and their susceptibility to bias. (Author/PN)

Empirical results from two studies--a simulation study and an experimental one--indicated that, in achievement data of the problem-solving type where a specific subject matter area is being tested, the greater the variety of the algorithms used, the higher the dimensionality of the test data. (Author/PN)