This report describes the application of a shell expert system from the medical diagnostic system, Neomycin, to Caster, a diagnostic system for malfunctions in industrial sandcasting. This system was developed to test the hypothesis that starting with a well-developed classification procedure and a relational language for stating the…

Five distribution-free alternatives to parametric analysis of covariance (ANCOVA) are presented and demonstrated using a specific data example. The procedures considered are those suggested by Quade (1967); Puri and Sen (1969); McSweeney and Porter (1971); Burnett and Barr (1978); and Shirley (1981). The results of simulation studies investigating…

Histories of media research commonly assume that models of mass media effects have progressed from direct or hypodermic effect models to indirect or multi-step models. Recently, however, B. Reeves and E. Wartella have objected to this assumption. To evaluate their alternative hypotheses, 163 studies from over 88 sources, representing nearly a…

Arguing that sufficient theory exists about the interplay between human information processing, computer systems, and the demands of various tasks to construct useful theories of human-computer interaction, this study presents a structural model of human-computer interaction and reports the results of various statistical analyses of this model.…

The "contextual hypothesis" of French and Brown (1977) concerning children's acquisition of temporal terms was tested. French and Brown claimed that it would be impossible for children to learn the meaning of temporal terms except by hearing them used in contexts where they referred to already known sequences, and further proposed that the terms…

This study tested Levine's hypothesis testing model of discrimination learning with a procedure for determining which hypothesis is sampled without introducing blank trials. (DP)

A telephone survey of 206 adults was conducted to test hypotheses concerning past information seeking, source preference, and media consumption. Subjects who had obtained information from "expert" institutional sources were found to have greater drug knowledge and interpersonal communication experience. Higher Print consumers had greater knowledge…

Members of a Teachers Center used research literature to generate ideas for a classroom activity, then did the activity in order to test it. The activity described here involved hypothesizing rules defining sequences of three numbers. (SD)

This article discusses various approaches to linguistics, the basic distinction being that between the scientific descriptive and the introspective speculative approach. The latter is excluded as not part of true fundamental linguistics. A discussion follows on the concept of linguistic theory and description as pertaining to the functionalist…

Recent case studies of social effects of rapid community growth associated with energy development in the western states have relied primarily on qualitative data with limited use of agency records, population surveys, and other secondary sources. While providing the first essential step in the orderly development of a scientific approach to…

Based on the theory that a story's coherence depends directly on the causal cohesiveness of the story's individual events, this paper describes (1) a process by which readers use causal reasoning to connect events, (2) what memory representations result from this reasoning, and (3) the implications of test data on causal reasoning. Following a…

The schema theory of comprehension as it relates to understanding while reading is reviewed in this report. Several techniques for the study of on-line measurement of comprehension are described that are based on a series of ten stories, each with two versions. The report notes that when subjects were asked to generate interpretations of stories…

The objective of this paper is to examine the relationship between the unreliability of difference scores and the power of tests of significance in an attempt to determine the validity of the paradox for the measurement of change presented by Overall and Woodward: that the power of tests of significance is maximum when the reliability of the…

Path analysis is presented as a technique that can be used to test on a priori model based on a theoretical conceptualization involving a network of selected variables. This being an introductory source, no previous knowledge of path analysis is assumed, although some understanding of the fundamentals of multiple regression analysis might be…

A solution is proposed for analysis of variance procedures with missing cells, such as may occur when a control group is not assigned to any of the rows or columns of the various experimental groups. Mathematical models for two-way design are presented which define several variables; as well as row effect, column effect, and row and column…