In this study, three structural characteristics--stem format, inclusive versus specific distracters, and stem orientation--were selected for experimental manipulation, while the number of alternatives, the number of correct answers, and the order of items were experimentally controlled. (Author)

Brennan's B statistic is a generalized upper-lower discrimination index which was first published in 1972: Peirce earlier introduced a statistic on the relation between a predictor and an outcome which has the same structure as Brennan's B. (Author/CP)

G analysis is a data analytic method based on the G index of agreement. A generalized technique for the rotation of factors in G analysis in which marker variables are brought into alignment with their adjoining reference axis is presented. (Author/JKS)

Profile analyses within multivariate statistical applications use "levels" and the "parallelism" hypotheses to test group differences. Procedures for the use of these hypotheses within a multistage discriminant analysis are illustrated using an artificial data set, with emphasis on the geometrical representation of group…

A subset of a real data set was used to illustrate an ad hoc analysis with missing data on multiple response variables. This strategy was initiated with a complete-case analysis to determine some variables that may be deleted with no loss in effects of interest. (SLD)

This article describes the theoretical distribution of optima arising from two-category univariable optimal discriminant analysis (UniODA) of continuous random data for a one-tailed (directional) hypothesis. Directional UniODA is illustrated through an investigation of the relationship between depression and brain monoamine turnover. (SLD)

Although comments of D.J. Nordlund and R. Nagel are welcomed, their arguments are not sufficient to accept the recommendation of using total variance estimates to standardize canonical discriminant function coefficients. If standardized coefficients are used to help interpret a discriminant analysis, pooled within-group variance estimates should…

Investigates the use of discriminant analysis to classify the relationship status of 96 battered women using their responses to the FACES II Cohesion and Adaptability Inventory. Results suggest that certain items on the instrument might be valuable in classifying women as being either currently in or currently out of an abusive relationship.…

Objective: To test the hypothesis that a combination of magnetic resonance imaging (MRI) brain measures obtained during early childhood distinguish children with autism spectrum disorders (ASD) from typically developing children and is associated with functional outcome. Method: Quantitative MRI technology was used to measure gray and white matter…

A battery of reading-related and reading measures was used to select samples of good (N = 30) and poor readers (N = 19) in Grade 1. Parents of these children completed a questionnaire about current and preschool home literacy practices and socio-economic status (SES). The 2 groups were compared with t tests and in a discriminant analysis. The t…

Discriminant function analysis assessed the predictive relevance of nine characteristics measured in sixth grade for differentiating among social identities claimed 4 years later by 616 participants in the Michigan Study of Life Transitions. For females, the first discriminant function, associated with academic motivation, self-esteem, and…

Until recently, no self-report instruments have examined psychological skills use in both practice and competition. In light of the significant role of practice in sport performance outcomes, a need exists to measure these skills in both domains. This study was designed to investigate differences in performance strategies of US Olympians in both…