Points out that 108 studies in the first 25 volumes of AV Communication Review used univariate analysis of variance to test experimental hypotheses, and suggests that researchers include omega-squared values in their reports to permit estimation of the relationship between x and y variables, and correlation data for comparing studies. (MER)

Multiple comparison procedures (MCPs), in the context of analysis of variance, are becoming more popular than the overall F tests. An attempt is made to clarify confusion among the different MCPs by systematically comparing and contrasting the procedures in terms of their purposes, restrictions, robustness to assumptions, and other special…

The central purpose of the study was to determine if a relationship existed between public relations practices and enrollment in secondary level area vocational schools in Texas. Contributing objectives of the study were: (1) to identify the degree to which selected public relations practices were being used as reported by the directors of area…

Describes a study that examined the information-seeking behavior of undergraduate students searching print and electronic encyclopedias to determine how mental models are adapted for different types of media. Cognitive load is discussed; print and electronic systems are compared; differences among three electronic encyclopedias are described; and…

Describes a study of fifth graders that investigated whether types of revision and quality of writing vary for bilingual and monolingual students when using word processors as compared with paper and pencil. Topics discussed include keyboarding skills, bilingualism, and language art skills. (Contains 27 references.) (LRW)

This study examined the relationship between the internal-external control and text anxiety constructs, and academic achievement. The hypothesis that internals would be more successful academically than externals was not supported. (Author)

This article has been written to point out why the analysis of covariance is a useful technique even when there is no difference between the groups being compared in terms of mean scores on the concomitant variable. (Author)

The analysis of variance, Welch, and Brown and Forsyth tests for mean equality were compared using Monte Carlo methods. The tests' rates of Type I error and power were examined when populations were nonnormal, variances were heterogeneous, and group sizes were unequal. Recommendations for use are presented. (Author/JKS)

A summary and comparison of the statistical analysis and results of the first three GUME research projects investigating foreign language teaching methods are presented in this report. The methods investigated are the habit-formation or implicit theory and the cognitive-code learning or explicit theory with either source-language or…

Some aspects of simultaneous tests for means are reviewed. Specifically, the comparison of univariate or multivariate normal populations based on the values of the means or mean vectors when the variances or covariance matrices are equal is discussed. Tukey's and Dunnett's tests for multiple comparisons of means, Scheffe's method of examining…

The harmonic mean and Kramer (1956) unequal n forms of the Tukey multiple comparison statistic were investigated for Monte Carlo Type I and Type II errors under conditions of assumption violations. The two major questions concerning the sensitivity of multiple comparison statistics for different types of pairwise contrasts and the affect of…

Investigated differences in the level of young readers' reading comprehension when one group of students read an interactive CD-ROM storybook and another group of students read the same story from a printed book. Discusses results of a univariate analysis of variance that was used to compare scores on oral retellings and comprehension questions.…

An investigation to compare systematic behavioral observations made live with those made on television was conducted. The study was designed to answer three questions: (1) Is there a difference in the agreement between observers (Os) when both view an event Live and when both view the same event on Television? (2) Is there a difference in…

The terms evaluation, assessment, and appraisal are often used interchangeably in research on schools and pupils. Guidelines for their use and some of the similarities and differences in their meanings are explicated. The concept of evaluation is narrowed to refer to use of information on pupil behavior. Four separate components of…