The control of human limb movement has been the focus of research for more than a century. A major issue to emerge from this work is the manner in which the central nervous system regulates electromyographic (EMG) activity to produce movements that differ in distance, velocity, and movement time. However, the different methods of analysis often…

Introduction: The current panorama of Higher Education reveals a need to improve teaching and learning processes taking place there. The rise of the information society transforms how we organize learning and transmit knowledge. On this account, teaching-learning processes must be enhanced, the role of teachers and students must be evaluated, and…

The aim of this study was to expand the assessment of two explanatory models of drinking behavior--perceptions of risk and social norms--and determine their relationship to dimensions of alcohol involvement in a multivariate evaluation. The Alcohol and Drug Survey was administered to a sample (N = 235) of college students from a university in the…

Classical methods for detecting outliers deal with continuous variables. These methods are not readily applicable to categorical data, such as incorrect/correct scores (0/1) and ordered rating scale scores (e.g., 0,..., 4) typical of multi-item tests and questionnaires. This study proposes two definitions of outlier scores suited for categorical…

The purpose of this study was to examine observable moment-by-moment steps in emotional processing as they occurred within productive sessions of experiential therapy. Global distress was identified as an unprocessed emotion with high arousal and low meaningfulness. The investigation consisted of 2 studies as part of a task analysis that examined…

Despite the demonstrated efficacy of cognitive-behavior therapy (CBT) for social anxiety disorder (SAD), many individuals do not respond to treatment or demonstrate residual symptoms and impairment posttreatment. Preliminary evidence indicates that acceptance-based approaches (e.g., acceptance and commitment therapy; ACT) can be helpful for a…

Using data collected from 10,511 kindergarten children and their parents from the Early Childhood Longitudinal Study-Kindergarten Cohort, this study examines child well-being across cohabiting 2-biological-parent families; cohabiting stepfamilies; married stepfamilies; and married 2-biological-parent families. Findings indicate no differences in…

Three important methods areas of multivariate analysis that are not always thought of in terms of latent variable constructs, but for which latent variable modeling can be used to great advantage, are discussed. These methods are: (1) random coefficients describing individual differences in growth; (2) unobserved variables corresponding to missing…

This paper focuses on three aspects related to the conceptualization and application of canonical correlation analysis as a dominant statistical model: (1) partial canonical correlation analysis and its application in statistical testing; (2) the relation between canonical correlation analysis and discriminant analysis; and (3) the relation…

The present paper suggests that multivariate techniques are very important in social science research, and that canonical correlation analysis may be particularly useful. The logic of canonical analysis is explained and discussed. The necessity of using replicability/generalizability analyses is argued. It is suggested that cross-validation…

A comparative survey of 46 Alaska school superintendents and 520 in the nation at large reveals that nearly all the superintendents in both groups consider their relationship with the school board to be important and spend a considerable amount of time on that relationship. A positive correlation emerges between the importance superintendents…

Recently, there has been an increasing level of interest in reporting subscores. This paper examines the issue of reporting subscores at an aggregate level, especially at the level of institutions that the examinees belong to. A series of statistical analyses is suggested to determine when subscores at the institutional level have any added value…

A study examined public perceptions of unethical employee acts as a function of variations in a corporation's cultural image, with emphasis upon the effect of congruent and incongruent organizational messages upon the perception of the degree of unethicality. Subjects, 200 adults approached at public locations, were asked to: (1) read one of three…

Three alternative solutions available for analysis of variance (ANOVA) using two-way and three-way completely randomized factorial designs with disproportional cell sizes across all two-way and three-way summary tables with no empty cells are discussed. These solutions are categorized as unique, sequential, and experimental. The procedures used,…

In the process of developing a conditionally-dependent item response theory (IRT) model, the problem arose of modeling an underlying multivariate normal (MVN) response process with general correlation among the items. Without the assumption of conditional independence, for which the underlying MVN cdf takes on comparatively simple forms and can be…