Multivariate normality is required for some statistical tests. This paper explores the implications of violating the assumption of multivariate normality and illustrates a graphical procedure for evaluating multivariate normality. The logic for using the multivariate bootstrap is presented. The multivariate bootstrap can be used when distribution…

The robustness with respect to Type I error and the power of a proposed test statistic in testing the conjoint hypotheses of mean and variability equality were examined in this simulation study. The conjoint test utilizes the maximum p-value from separate tests of equality of means and equality of variability as its p-value to control the Type I…

This document, in both English and French versions, is the Biology 30 Grade 12 Diploma Examination from Alberta Education. It is a 2.5 hour closed-book examination consisting of 48 multiple-choice and 8 numerical-response questions of equal value that are worth 70% of the examination, and 2 written-response questions of equal value worth 30% of…

This paper discusses the fact that reliability is about scores and not tests and how reliability limits effect sizes. The paper also explores the classical reliability coefficients of stability, equivalence, and internal consistency. Stability is concerned with how stable test scores will be over time, while equivalence addresses the relationship…

The first step of effective intervention with delinquent youth is to identify youth who are engaged in using alcohol and other drugs. This document reviews the American Correctional Association and the Institute for Behavior and Health, Inc. ACA/IBH and The American Probation and Parole Association (APPA) projects that investigated innovative and…

Contrasts or comparisons can be used to investigate specific differences between means. Contrasts, as explained by B. Thompson (1985, 1994) are coding vectors that mathematically express hypotheses. The most basic categories of contrasts are planned and unplanned. The purpose of this paper is to explain the relative advantages of using planned…

This document, intended as a resource manual, provides guidelines on drug testing. These topics are covered: (1) National Institute on Drug Abuse guidelines applicability; (2) introduction to legal issues, drug testing in juvenile probation and parole, and juvenile law; (3) mission of a juvenile parole agency; (4) purpose of testing; (5) drug…

The Yudofsky scale is considered to be one of the best scales for measuring aggressive behavior developed to date. One of the chief shortcomings of the scale, however, is appropriate methods for scoring it in ways that make the resulting scores well-suited for data analyses. The basic scoring problem with the Yudofsky scale is that the scale is…

This paper presents the results from the Dubin Inquiry Report (1990) into drug abuse for athletic purposes. The inquiry involved testimonies from 48 steroid users, and from coaches, sport administrators, medical doctors, sport scientists, and International Olympic Committee representatives. Recommendations from the Dubin Report include: (1)…

To evaluate test speededness and to derive implications for test program activity, this document presents an annotated bibliography on studies of test speededness. The 64 citations range from 1902 to 1976, and include the seminal articles by Cronbach and Warrington (1951) and Gulliksen (1959); articles which summarize the previous literature on…

Issues regarding confidence and tolerance intervals are discussed within the context of educational measurement. Conceptual distinctions are drawn between these two types of intervals; and examples, under various error and true score models, are used to compare such intervals. It is shown that there tend to be only small differences in tolerance…

Author argued that teachers rather than outside examiners should be responsible for assessing the abilities and achievements of their students. (Editor/RK)

Considered in this paper are a mathematical discussion and an algorithm, and a computer program for Fisher's test. (Author)

Experiments were designed to estimate separately time required to encode the premises of a three-term series problem and time required to generate an answer. It appears that marked and unmarked adjectives are stored in the same form and premises are integrated into a unified representation. (CHK)

This study attempted to apply the statistical technique of multiple discriminant analysis to the prediction of homicidal behavior by use of the Rorschach. (Author/RK)