Examined the degree of variation in the accuracy of classifying student performance proficiency-level scores with changes in the number of proficiency levels and the measurement accuracy. Simulation results show the limitations of interpretability of single indexes that are intended to represent classification accuracy. Suggests ways to estimate…

Discusses hierarchical text classification for electronic information retrieval and the measures used to evaluate performance. Proposes new performance measures that consist of category similarity measures and distance-based measures that consider the contributions of misclassified documents, and explains a blocking measure that identifies…

Presents a background on theory in knowledge organization, which has moved from an epistemic stance of pragmatism and rationalism (based on observation of the construction of retrieval tools), to empiricism (based on the results of empirical research). Discusses historicism, external validity, classification, user-interface design, and…

Describes the methods, processes, and procedures used to develop the Classification of Instructional Programs 2000 (CIP:2000), the National Center for Education Statistics taxonomy of instructional programs, and provides information on the CIP's structure, contents, and organization. (SLD)

This study's purpose was to test whether evaluative judgments concerning a job's motivating potential result from a piecemeal or a categorization process. Results showed that categorization clues heavily influenced respondents' judgments. Organizational change efforts may be particularly effective when specifically aimed at introducing prototypic…

Proposes a typology of verbal-like sequences of thought that spontaneously pass through people's minds, based on the epistemic status (thought, memory, enactment, meta-observation, and control) of the expressions composing such sequences. (SR)

Individual differences in children's performance on a classification task are modeled by a two component binomial mixture distribution. The model accounts for data well, with variance accounted for ranging from 87 to 95 percent. (RJC)

Two studies examined whether individual faces are perceived categorically. A linear continuum of "morphed" faces was generated between individual exemplars of familiar faces. Subjects, undergraduate students, discriminated most accurately when face-pairs straddled apparent category boundaries; thus individual faces are perceived…

Proposes a new rule system and notation that supports the characterization of a document based on its structure or architecture (primarily linear, paper-copy media). Examples of the application of the notation are provided. (Author/JKP)

Using various types of businesses--furniture makers, car parts suppliers, paper mills, and food and steel industries--the various ways work is classified are illustrated. The ways classification is used for organizational learning and change are demonstrated. (SK)

The fit of five models (Roe's, Meir's and Knapp and Knapp's circular order; Gati's hierarchical; and Lunneborg and Lunneborg's four-factor) with Roe's eight vocational interest fields was analyzed using a randomization test of hypothesized order relations and factor analysis. Results showed that Meir's and Gati's models best represented Roe's…

Applied taxometric analyses to construct of psychopathy (as measured by Psychopathy Checklist) and to several variables reflecting antisocial childhood, adult criminality, and criminal recidivism. Findings from 653 serious offenders assessed or treated in maximum-security institution supported existence of taxon underlying psychopathy. Childhood…

Notes that numerous dysfunctions have roots in interpersonal problems rather than in individual, intrapsychic distress. Discusses movement toward developing diagnostic system that depicts/classifies relational disorders, and efforts of proponents to include relational disorders in future versions of Diagnostic and Statistical Manual of Mental…

Eight experiments, each with 10 observers in each condition, show that the visual search for Mueller-Lyer stimuli is based on complete configurations rather than component segments with preemption by low-level groups. Results support the view that rapid visual search can only access higher level, more ecologically relevant structures. (SLD)

Some of the most commonly used item response theory models for ordered polychotomous data are described using the taxonomy of D. Thissen and L. Steinberg (1986) as a framework. An empirical study found the graded response model and an extension of the partial credit model very similar in a practical application. (SLD)