Each of the four classic multivariate analysis of variance (MANOVA) tests of statistical significance may lead a researcher to different decisions as to whether a null hypothesis should be rejected: (1) Wilks' lambda; (2) Lawley-Hotelling trace criterion; (3) Roy's greatest characteristic root criterion; and (4) Pillai's trace criterion. These…

This study considers the theories of impulse buying in an examination of the effects on circulation of library books when books are displayed face front (with all or most of the book jacket showing) as opposed to spine front. Reviews of the literature on consumer behavior and on library displays support the hypothesis of this study, i.e., that…

This paper provides researchers with a method of determining sample size for a given power level in the preparation of a single group exploratory repeated measure analysis. The rationale for determining sample size which takes into consideration the powers and assumptions of both the adjusted univariate and multivariate repeated measures tests is…

Attempts to distill a growing technical literature on repeated-measures analysis of variance into a few simple principles for selecting an analytic technique. Argues that researchers ought not opt for a general analysis strategy when current computer technology makes it possible to select the optimal analysis technique for a given data set. (RH)

The mixed model analysis of variance assumes a mathematical property known as sphericity. Several preliminary tests have been proposed to detect departures from the sphericity assumption. The logic of the preliminary testing procedure is to conduct the mixed model analysis of variance if the preliminary test suggests that the sphericity assumption…

The wide availability of large amounts of inexpensive computing power has encouraged statisticians to explore many approaches to a basis for inference. This paper presents one such "computer-intensive" approach: the bootstrap of Bradley Efron. This methodology fits between the cases where it is assumed that the form of the distribution…

This paper examined the rank transformation approach to analysis of variance as a solution to the Behrens-Fisher problem. Using simulation methodology four parameters were manipulated for the two group design: (1) ratio of population variances; (2) distribution form; (3) sample size and (4) population mean difference. The results indicated that…

Describes study that investigated the communicability of the emotional connotation of various typefaces. Typographers, student instructional technologists, and naive readers (high school and college students) rated 30 typefaces using a semantic differential scale. Seven hypotheses tested are discussed and results are analyzed. (Author/LRW)

A statistical method has been developed for nested incomplete samples in a longitudinal study in which part of the sample has dropped out in such a way that the data have a nested pattern. A procedure which performed well in a Monte Carlo experiment was extended to a two-factor incomplete design with repeated measures on one factor. Methods…

This research paper based upon a thesis of the same title examines whether a statistically significant difference exists between computer literacy test scores for those students having a microcomputer in the home and those who do not. Relationships between student gender, adult education level, adult occupation, adult computer use, educational…

This study presents exploratory evidence to prove that student computer usage is correlated with academic performance using course grades as an academic performance measure. No conclusive evidence was found to indicate student performance and computing are related, but a significant relationship between course instructor and computer usage was…

Reviews study of 30 graduate students that investigated the possible contribution of pictures to the recall and retention of information presented in written prose. The two variables considered were the durability of picture effects, and the effect on recall of information that was not pictured. (LRW)

Using the Component Display Theory as an analyzing tool, this study compared the effects of expository and discovery methods of instruction on two learning outcomes, application and transfer. One hundred ninth grade students in each of four earth science classes were randomly assigned to five groups--four experimental groups designed to test four…

Describes study of 42 first and second graders which was conducted to determine whether older siblings could enhance their comprehension of television programs. The hypotheses tested are discussed, research methodology using analysis of variance is explained, videotapes of sibling interaction are analyzed, and future research needs are suggested.…

Describes study of children in grades one, three, and five that examined their active processing and short term memory (STM) of color, contour, and interior pattern of shapes found in computer digitized pictures. Age-related differences are examined, and the role of processing visual information in the learning process is discussed. (12…