The purpose of the current study is to explore the effects of community service work and community involvement on perceptions of self-entitlement--expectations of others to do things for oneself--among undergraduate students. Over the course of a 16-week semester, 26 randomly selected subjects (20 community college psychology students and six…

We report findings from an initial empirical test of a hope-based, group therapy protocol. In this context, hope is defined as a cognitive process through which individuals pursue their goals [Snyder, C. R.: 1994, Free Press, New York]. As such, the eight-session group treatment emphasized building goal-pursuit skills. Findings from a randomized,…

Background and Purpose: Examine the association between change in functional status and quality of life for individuals with orthopaedic impairments approximately 90 days after discharge from in-patient medical rehabilitation. Methods: A retrospective study from 2001 to 2002 using information from the IT HealthTrack database. The study included…

Researchers have used many statistical models to determine whether an institution's faculty pay structure is equitable, with varying degrees of success. Little attention, however, has been given to court interpretations of statistical significance or to what variables courts have acknowledged should be used in an equity model. This article…

Academic selectivity plays a dominant role in the public's understanding of what constitutes institutional excellence or quality in undergraduate education. In this study, we analyzed two independent data sets to estimate the net effect of three measures of college selectivity on dimensions of documented good practices in undergraduate education.…

This study guide presents lessons on hand calculating various statistics: Central Tendency and Dispersion; Tips on Data Presentation; Two-Tailed and One-Tailed Tests of Significance; Error Types; Standard Scores; Non-Parametric Tests such as Chi-square, Spearman Rho, Sign Test, Wilcoxon Matched Pairs, Mann-Whitney U, Kruskal-Wallis, and Rank Sums;…

A detailed investigation of the statistical procedure of W. Stout (the computer program DIMTEST) for testing the hypothesis that an essentially unidimensional latent trait model fits observed binary response data from a psychological test is presented. One finding is that DIMTEST may fail to perform as desired in the presence of guessing when…

The use of stepwise regression has been criticized for both interpretive misunderstandings and statistical aberrations. A major statistical problem with stepwise regression and other procedures that involve multiple significance tests is the inflation of the Type I error rate. General approaches to control the family-wise error rate such as the…

Relations among students' cognitive structures, instruction, and course achievement were studied for 102 undergraduates in three courses. An aim of the study was to integrate expert-novice research with investigations of cognitive-structure change. Experienced instructors identified concepts central to the different courses. Students were asked to…

This paper discusses distribution theory and power computations for four common "tests of combined significance." These tests are calculated using one-sided sample probabilities or p values from independent studies (or hypothesis tests), and provide an overall significance level for the series of results. Noncentral asymptotic sampling…

Part of an overall evaluation study of the WANDAH Project at Logan High School (Utah), this study compared the time on task of students in a computer-based English class in two conditions, the handwriting condition (any situation in which they were not involved with computers) and the computer condition. Observational techniques were used to code…

This paper is concerned with the identification and testing of salient variables which show potential for explaining client use of evaluation information. A single-page interview instrument was devised which aggregated the factors and factor categories collected following an extensive review of the literature. Data were collected from a…

An essential first step in the investigation of employment discrimination is establishing that the selection procedure has had an adverse impact. The 80% rule and statistical significance (as determined with a chi-square test), two methods of assessing adverse impact, were compared considering the variables: number of applicants (N), proportion of…

The current state of usage of regression models in analysis of variance (ANOVA) designs is empirically examined, and examples of several statistical errors made in usage are presented. The assumptions of the general linear model are that all predictors are known without error of measurement and are fixed with no replication or sample variation; in…

Campbell and Fiske (1959) developed four criteria of construct validity when measures of more than one trait are obtained with more than one method. In this study these criteria are compared with two other procedures--an analysis of variance (ANOVA) model and confirmatory factor analysis--for analyzing multitrait-multimethod (MTMM) data. The…