Matrix differencing of data vectors is introduced as a method for computing test variance and is compared to traditional analysis of variance. Applications for computer assisted instruction, provided by supplemental computer software, are also described. (Author/GDC)

Discusses formative evaluation of courseware and describes a study of undergraduates that compared the effects of two methods of formative evaluation on the revision of a computer-assisted instruction (CAI) program written in HyperCard. Use of the one-to-one method and the small group method of evaluation are explained, and posttest scores are…

This paper outlines the problems associated with the estimation of variance components in generalizability analyses using analysis of variance software, and discusses the most useful software currently available for this specialist application: the MIVQUE method of the Statistical Analysis System (SAS) procedure VARCOMP. (Author)

Generalizability theory is based upon analysis of variance (ANOVA) and requires estimation of variance components for the ANOVA design under consideration in order to compute either G (Generalizability) or D (Decision) coefficients. Estimation of variance components has a number of alternative methods available using SAS, BMDP, and ad hoc…

School psychologists and education students and faculty were asked to distinguish between computer-generated and individually written psychological test comments and indicate cues used in making identifications. Even though results indicate correct identification did not differ significantly from chance, school assessment reports must provide more…

Presents a series of data sets and answers that can be used to do an inhouse evaluation of common procedures in statistical software programs that are designed for use on microcomputers. Highlights include procedures for t-test, analysis of variance, regression, correlation, and categorical data analysis. (14 references) (LRW)

High school biology students (n=261) completed 1 of 4 versions of the hypermedia courseware, "The Ecology and History of the Great Smoky Mountains National Park." Analysis failed to detect any statistically significant differences in achievement among the four groups, but did detect a significant difference among student ability levels. Supports…

Compares three different approaches of user profile acquisition in a filtering system for customizing information acquisition on the World Wide Web. Explains the SIFTER system designed at Indiana University and discusses results of an analysis of variance that showed exclusive reliance on relevance feedback led to inferior filtering performance.…

A study investigated the effects of interactive CD-ROM software on children's reading comprehension. It explored whether 31 fourth-grade children in an elementary school in a suburban school district in the Midwest comprehended narratives better when reading from the printed page or from the same text displayed by the computer. One class read each…

Examines the relationship between student participation in structured activities and academic success at school; discusses the use of computers in schools; and describes a study that investigated 220 students in 3 high schools to determine relationships between participation in structured activities and successful computer use in school. (Contains…

Describes a study of undergraduates that compared three strategies for indicating links in a hypermedia system to determine their effect on learner navigation and learner perceptions of ease of use. Highlights include three linking display types; the density of links; elaboration types; time intervals; and implications for hypermedia system…

Describes a study of high school students that investigated the impact of embedding an instructional map into hypermedia courseware on student achievement. Treatment of experimental and control groups is described, results of pretests and posttests are compared, and implications for software designers and teachers are suggested. (Contains 23…

To investigate what children learn during computer programming instruction, students attending a summer computer camp were asked to recall either single lines or chunks of computer programs from either coherent or scrambled programs. The 16 subjects, ages 12 to 17, were divided into three instructional groups: (1) beginners, who were taught to…

Reports findings of studies investigating the influence of default values (i.e., excellent, good, or poor) on the evaluative behavior of students completing computerized instruments for rating instruction. Respondents who were exposed to the excellent default rated the instructor more favorably. Order and contiguity of items did not influence…

This study was designed to determine whether differences in performance on a popular instructional gaming package would be observed under differing conditions of color presentation. It was hypothesized that performance would be enhanced under a monochromatic and/or moderately colored condition, and least successful under a multicolored condition.…