With the advent of the computer and user-friendly statistical software packages, factor analysis has become accessible to most researchers. However, conventional factor analysis, or R-technique, is only useful for research concerning types or groups of variables. Educational and psychological researchers are often interested in types of people,…

These FORTRAN programs and MATHEMATICA routines were developed in the course of a research project titled "Achievement and Assessment in School Science: Modeling and Mapping Ability and Performance." Their use is described in other publications from that project, including "Latent Traits or Latent States? The Role of Discrete Models…

A high-breakdown estimator is a robust statistic that can withstand a large amount of contaminated data. In linear regression, high-breakdown estimators can detect outliers and distinguish between good and bad leverage points. This paper summarizes the case for high-breakdown regression and emphasizes the least quartile difference estimator (LQD)…

This paper outlines the procedures used to implement and test the CARL version C100 circulation system at the University of Colorado's Boulder Campus. Intended to serve as a guide to other libraries implementing new circulation software, the paper describes a broad approach to testing such software, describes procedures that speed and organize the…

Researchers are developing automated instructional design systems which guide subject matter experts (SMEs) through the complexities of courseware development. Enabling SMEs to perform many of the authoring activities associated with courseware development has two distinct advantages: (1) costs are contained; and (2) SMEs can make optional use of…

This document contains three position papers concerned with copyright, cataloging, and software standards for educational software. In the first paper, "Cataloguing Educational Software: Is There a Problem?" R. N. Tucker advocates the cataloguing of educational software in the same way and in the same place as other materials in a…

A microprocessor constitutes the heart and soul of a personal computer. Indeed, the quality of a personal computer is determined largely by the type of microprocessor that is included within its circuitry. Since the microcomputer revolution began in the late 1970s, these special chips have gone through a series of improvements and modifications.…

This paper describes a computer model that simulates the way children develop the reasoning skills of transitive inference and the construction of ordered sets. The computer model begins from general operations, such as setting and removing goals, storing and retrieving information, comparing elements to find matches, reading premises, and giving…

This guide is designed to introduce teachers and students to the use of the HyperTalk programming language in order to extend the power of HyperCard and to suggest ways to use HyperCard in conjunction with HyperTalk in an educational setting. It is noted that previous familiarity with the Macintosh interface, Home stack, and HyperCard at the…

The method of parametric interpretation used in the computer program "Yorktalk," software that creates synthetic parameter files from phonological representations of speech, is explained. First, the design of the program is described, and the concept of "exponency" in prosodic analysis is explained as it is applied in the…

This book in intended for use by individuals who are comfortable with exploring new software and who want to learn LinkWay (one of a new generation of hypermedia programs) scripting. The book contains several chapters which are divided into three themes. The first part of the book is a review and starts with Chapter 0 providing a brief overview of…

This manual is intended as a guide and source of ideas for using single switches in adaptive software programming for people with disabilities who cannot use a traditional keyboard. The manual and associated program disk are comprised of over 100 programs, routines and files illustrating various uses of single switch and adaptive input devices.…

Implementation of a computer-based model for morphological analysis and synthesis of language, entitled P-KIMMO, is discussed. The model was implemented in Quintus Prolog on a Sun Workstation and exported to a Macintosh computer. This model has two levels of morphophonological representation, lexical and surface levels, associated by…

This description of the development of an index to periodicals published by New York State agencies begins by discussing the criteria used in determining which titles to index, which years to cover, and what subject headings to use. Recruitment of indexers and the development of indexing guidelines by the Government Documents Roundtable of the New…

This paper describes a personal computer spreadsheet set up to carry out hierarchical log-linear analyses, a type of analysis useful for institutional research into multidimensional frequency tables formed from categorical variables such as faculty rank, student class level, gender, or retention status. The spreadsheet provides a concrete vehicle…