The nature of percentile ranks scores is explored using concrete heuristic examples. It is explained why arithmetic operations require measurement on equal-interval scales, and that percentile ranks are not measured on equal-interval scales and therefore may not be added or averaged. The consequences of inappropriately adding percentile ranks are…

Methods are proposed for the construction of weakly parallel tests, that is, tests with the same test information function. A mathematical programing model for constructing tests with a prespecified test information function and a heuristic for assigning items to tests such that their information functions are equal play an important role in the…

In an effort to more clearly define the engineering method, this document attempts to draw distinctions between engineering and science. Part I, "Some Thoughts on Engineering," discusses strategies that engineers employ to solve problems, and the characteristics of the types of engineering problems. Part II, "The Principal Rule of the Engineering…

A number of studies have reported that there is a strong tendency to ignore base-rate information in favor of individuating information, except when the former can readily be incorporated into a causal schema. In this study, students in eight undergraduate classes were given problems in which the base-rate information was either causal or…

This study investigated several aspects of a teaching experiment which focused on five seventh grade students' performance on nonroutine number theory problem-solving with a close look at the role of heuristics, concrete models, and the relationships between these variables. In the experiment, students were given a series of lessons on number…

While each English department will establish its own set of assumptions appropriate for its objectives and programs, the new rhetoric can bring some coherence to the teaching of writing and literature by providing students with reliable strategies for reading literature as well as writing. In teaching literature teachers need to demonstrate the…

The integration of content area writing instruction into the history curriculum has been a slow process. A history course at Ohio University (Athens) offers students experience in writing the type of materials written by practicing historians: book reviews, journal articles, and articles for encyclopedias and biographical dictionaries. Such short…

A small ethnographic study determining the writing strategy preferences of advanced English as a second language students (N=48) found that students' most common preferences were hierarchical treeing or planning. Open-ended exploratory techniques were also popular. The least common preference was for systematic heuristics. (Author/CB)

Addresses the absence of a diagnostic instrument to help determine if a student is experiencing problems with invention. Provides two diagnostic models, one based on L. Odell's intellectual strategies, the other on the author's extrapolation of criteria from tacit informal diagnostic estimations. Includes evaluation of the instruments by 40…

Presents thinking-aloud protocols from secondary pupils solving arithmetic story and geometrical problems and analyzes their protocols by using interpretation models founded on a general problem-solving model. A word problem solving simulation is also used to further explicate processes pupils use to solve mathematical tasks. (Author/MBR)

Reviews educational applications of artificial intelligence and presents empirically-based design variables for developing a computer-based instruction management system. Taken from a programmatic research effort based on the Minnesota Adaptive Instructional System, variables include amount and sequence of instruction, display time, advisement,…

A stochastic multidimensional unfolding (MDU) procedure is presented to represent individual differences in phased or sequential decision processes spatially. A Monte Carlo analysis demonstrates estimation proficiency and the appropriateness of the proposed model selection heuristic, and an application to capture awareness, consideration, and…

Argues against the merely descriptive presentation frequently used in teaching biochemistry and in favor of a constructivist approach called heuristic-teleonomic, which unites the process of discovery with adaptation to functional ends. Discusses difficulties inherent to the nature of biochemistry, including the conflict between acquiring…

Discusses two computer problem solving programs: rule-based expert systems and decision analysis expert systems. Explores the application of expert systems to automated chemical analyses. Presents six factors to consider before using expert systems. (MVL)

Compares a program written both in BASIC and LOGO on its inferential and decision making ability. Explains steps in each program and how deductions and decisions are made. (MVL)