Randomized response (RR) is a well-known method for measuring sensitive behavior. Yet this method is not often applied because: (i) of its lower efficiency and the resulting need for larger sample sizes which make applications of RR costly; (ii) despite its privacy-protection mechanism the RR design may not be followed by every respondent; and…

A modern clustering technique was applied to age-10 and age-13 sociometric data with the purpose of identifying longitudinally stable peer status clusters. The study included 445 girls from a Swedish longitudinal study. The identified temporally stable clusters of rejected, popular, and average girls were essentially larger than corresponding…

Objective: Develop, implement, and evaluate an intervention (a guided experiential assignment) to improve nutrition students' attitudes toward working with older adults. Design: A quasi-experimental design with an additional qualitative component (mixed methods). Setting: A North Central land-grant university. Participants: 100 college students…

Dichotomous item response theory (IRT) models can be viewed as families of stochastically ordered distributions of responses to test items. This paper explores several properties of such distributions. The focus is on the conditions under which stochastic order in families of conditional distributions is transferred to their inverse distributions,…

Since canonical correlation analysis subsumes multiple regression as a special case, and since commonality analysis (a variance partitioning procedure) has proven useful in interpreting multiple regression results, the interpretation of canonical correlation results might also be enhanced by the use of commonality analysis. In this paper, a…

Love is among the most fundamental aspects of the experience of being human. Achieving successful love relationships has been associated by counselors--both counseling theories and researchers--with good mental and good physical health. Yet our knowledge of the nature of love remains primitive, because until recently it was not considered…

Most of the multivariate statistical techniques rely on the assumption of multivariate normality. The effects of non-normality on multivariate tests are assumed to be negligible when variance-covariance matrices and sample sizes are equal. Therefore, in practice, investigators do not usually attempt to remove non-normality. In this simulation…

The relationships among the use of self-regulated learning strategies and two important cognitive motivational factors, expectancy of success and task value, were studied using hierarchical regression analysis. Since there are differences in self-regulated strategy use according to level of test anxiety, test anxiety was used as a control…

The need for using invariance procedures to establish the external validity or generalizability of statistical results has been well documented. Invariance analysis is a tool that can be used to establish confidence in the replicability of research findings. Several approaches to invariance analysis are available that are broadly applicable across…

This Monte Carlo study examines whether, given various numbers of variables, treatments, and sample sizes, in a one-way multivariate analysis of variance, Type I error rates of the test approximations provided by the BMDP program, the Statistical Analysis System (SAS), and the Statistical Package for the Social Sciences (SPSS) for Roy's largest…

This study investigates the accuracy of the Woodruff-Causey technique for estimating sampling errors for complex statistics. The technique may be applied when data are collected by using multistage clustered samples. The technique was chosen for study because of its relevance to the correct use of multivariate analyses in educational survey…

The effects on reading speed and comprehension of window proportions and page turning in electronic text were investigated in this study. Subjects--61 undergraduate students at the University of Wisconsin--Whitewater--were administered a standardized reading text displayed as photocopied dot matrix print in simulation of electronic text. There…

Advantages of the use of multivariate commonality analysis are discussed and a small data set is used to illustrate the analysis and as a model to enable readers to conduct such an analysis. A noteworthy advantage of commonality analysis is that commonality honors the relationships among variables by determining the degree to which predictors in a…

This study was undertaken to provide a comparison of primary/elementary teachers' perceptions in Australia and the United States of the skills, competencies, and behavioral attributes that principals should possess to administer an effective school. Utilizing the Audit of Principal Effectiveness, 140 primary teachers in Australia and 347…

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…