Empirical studies addressing admission to and graduation from a doctoral program focusing on educational leadership are noticeably absent within the professional literature, and this study seeks to fill partially this void through testing specific hypotheses. Archival data were used to conduct a three group discriminant analyses where the…

Among the different types of experimental design are two general categories: true experimental designs and quasi- experimental designs. True experimental designs include more than one purposively created group, common measured outcomes, and random assignment. Quasi-experimental designs are commonly used when random assignment is not practical or…

R. V. Hopkins (1982) has criticized the use of means as the unit of analysis in situations where intact groups, such as classes, rather than individuals have been randomly assigned to various treatment conditions. Instead, Hopkins advocated the use of certain analysis of variance (ANOVA) models that, as far as test for treatment effects are…

Since the telephone interview is often used as a method in survey research, a study was conducted to determine whether use of random digit dialing and sampling by surnames resulted in selection of two different samples from the same ethnic population. A random digit dialing technique was used to conduct interviews with 1,076 Texas residents over…

This study was designed to determine factors that affect the employment status of the wife-mother and prove that these factors would be similar in both "typical" and "disadvantaged" samples. Three "universal variables" were: the husband's attitudes, youngest child's educational status, and frequency of family sharing the housework…

A set procedure developed in this study is useful in determining sample size, based on specification of linear contrasts involving certain formula treatments. (Author/DEP)

Two population raw data matrices were constructed by computer simulation techniques. Each consisted of 10,000 subjects and 12 variables, and each was constructed according to an underlying factorial model consisting of four major common factors, eight minor common factors, and 12 unique factors. The computer simulation techniques were employed to…

Stability of Type I error rates and power are investigated for three forms of the Box test and two forms of the jackknife test with equal and unequal sample sizes under conditions of normality and nonnormality. The Box test is shown to be robust to violations of the assumption of normality when sampling is from leptokurtic populations. The…

This study examines the magnitude of the difference between estimates from the 1990-91 Schools and Staffing Survey (SASS) using a Common Core of Data (CCD) definition of a school and a Quality Education Data (QED) definition of a school. The 1990-91 SASS sample design allows for the development of school and administrator estimates using either…

In Latin America and the industrialized nations of North America and Europe, the traditionally small impact of women on politics is gradually changing. Five avenues for women to achieve positions of leadership and political impact are: (1) government positions, (2) political parties, (3) women's organizations, (4) other organizations, and (5) the…

Study investigated (1) whether there is consensus among test writers in identification of important segments of a prose passage, and (2) the characteristics of the prose segments chosen as important. (Authors/MB)

Three nonparametric alternatives to the parametric Bartlett test are presented for handling the K-sample equality of variance problem. The two-sample Siegel-Tukey test, Mood test, and Klotz test are extended to the multisample situation by Puri's methods. These K-sample scale tests are illustrated and compared. (Author/GDC)

Evaluations involving nonrandom assignment to treatment or control groups are vulnerable to an accidental or intentional confounding of a selection effect with the treatment effect. Two techniques, discriminant analysis and base expectancy analysis, permit separate estimation of the selection and treatment effects in the final results. (Author/CTM)

An original study with a 96 percent questionnaire return rate and four replications with high return rates were compared in terms of populations sampled, implementation, and results. Future use of this procedure, which includes advance mailing, telephone contact, telephone explanations, and followups, is discussed. (SLD)