Type I error rates for Yao's, James' first-order and second-order, and Johansen's tests of equality of mean vectors for two independent samples were estimated for various conditions defined by the degree of heteroscedasticity and nonnormality. Each procedure can be seriously nonrobust with exponential and log-normal distributions. (TJH)

Two case studies, a study of retention of health care personnel and a study of internal organizational communication, are presented that illustrate the application of multidimensional unfolding (MDU) and mapping to organizational concerns. This approach to multivariate analysis allows clients and stakeholders to picture the results of complex…

Uses multivariate regression techniques to analyze 1992 household survey data from rural Tanzania, focusing on how household and individual characteristics affect whether a child attends primary school, completes primary school, and attends secondary school. Fathers' education has a greater influence on boys, whereas mothers' primary education has…

Describes a study conducted at two Australian secondary schools that investigated relationships between perceptions of the classroom learning environment, approaches to learning, and self concept as a learner. Examines gender and age differences, describes measurement techniques used, and considers results of statistical analyses. (Contains 59…

The article presents a cross-national study of social work students' interest in working with the elderly, based on a sample of 679 graduating BSW students from 7 countries: Australia, Brazil, England, Germany, Hungary, Israel, and the United States. The findings among all the national cohorts show that the motivation to work with the elderly was…

The present study investigated the effects of positive and negative GABA[subscript A] modulators under three different baselines of repeated acquisition in squirrel monkeys in which the monkeys acquired a three-response sequence on three keys under a second-order fixed-ratio (FR) schedule of food reinforcement. In two of these baselines, the…

This article presents an interview with R. Darrell Bock. He served as president of the Psychometric Society from 1972-1973. He has received the National Council on Measurement in Education award for "Contributions to the Design and Analysis of Educational Assessment" in 1990, the Educational Testing Service award for "Distinguished Contributions…

This paper focuses on firm behaviour within business clusters and cluster-type environments. Using survey data to distinguish cluster members by the perceived degree of participation, the authors categorize them as leading, proactive or reactive players. They then examine the clustering behaviour of each of these categories. They find that (a)…

This study examined the differential impacts of SAT scores and high school rank, college academic level, motivational variables, and self-regulatory variables in explaining variance in the academic achievement of male and female collegians using structural equation modeling and multiple groups analyses. Significantly, in light of earlier research,…

DETECT, the acronym for Dimensionality Evaluation To Enumerate Contributing Traits, is an innovative and relatively new nonparametric dimensionality assessment procedure used to identify mutually exclusive, dimensionally homogeneous clusters of items using a genetic algorithm ( Zhang & Stout, 1999). Because the clusters of items are mutually…

In the statistical and transcriptional analyses reported in this exploratory study, original rhythms of 6-11-year-old children (N=36) were examined. The hypotheses were based on a new model of musical development, and tested empirically using non-pitch rhythmic improvisation in a MIDI-environment. Several representational types were found in…

The authors investigated the medical use, illicit use, and diversion of 4 distinct classes of abusable prescription medication (sleeping medication, sedative or anxiety medication, stimulant medication, and pain medication) in a random sample of undergraduate students. In spring 2003, 9,161 undergraduate students attending a large, public,…

In an effort to explain the spatial patterning of violence, we expanded Sutherland's (1947) concept of differential social organization to include the level of deviance exhibited by neighboring areas. To test the value of this extension, the geographic clustering of Japanese suicide and homicide rates is assessed using 1985 and 1995 data for…

Children's social networks often include close family members, extended family members, and friends, but little is known about interindividual differences in the patterning of support from these sources. In this study, we used person-oriented analyses to differentiate patterns of support for children undergoing the transition to adolescence.…

This study measured the effects of gender, age and their interaction on global self-esteem and physical self-perceptions (physical self-worth, PSW; physical condition, PC; physical strength, PS; attractive body, AB; sport competence, SC) of French adolescents. Global self-esteem (GSE) and physical self-perceptions were measured by the Physical…