This paper shows that redundancy maximization with J. K. Johansson's extension can be accomplished via a simple iterative algorithm based on H. Wold's Partial Least Squares. The model and the iterative algorithm for the least squares approach to redundancy maximization are presented. (TJH)

Using the Life Situation Survey, the perceived quality of life of 100 adults with spinal cord injury was compared with that of 120 adults with mental retardation. Comparison of descriptive statistics and a multiple regression analysis revealed possible differences in the impact of the two disabilities on specific life domains. (JPS)

Compares approaches to modeling ordinal outcome variables, including assumptions, interpretations, and limitations. Explores how the multiple regression approach with ordinal level data can compromise the understanding of the effects of the independent variables and of the ordinal level response. Provides applications with data from a multisite…

Objective: To estimate the impact of arthritis using a general health index and National Health Interview Survey (NHIS) data. Methods: Morbidity data came from NHIS Public Use data, from the years 19861988 and 1994. The data are 423 400 cases, representing 975 421 153 person-years. Quality of Well-being Scale (QWB) morbidity scores were imputed…

Background: An important element of many anti-bullying programmes is encouraging victims to tell someone about their predicament. Research has already reported prevalence of telling, who/when children tell and efficacy of telling. However, seeking help can be viewed as a coping behaviour, and coping processes such as appraisal and emotion may be…

A demonstration, which shows that the graphing calculation can greatly supplement the computer and often eliminates the need for computers and science, is given. The graphic calculator is a handheld computer, more powerful than most sophisticated computer of 25 years ago.

Context: Prior study suggests that contextual characteristics of medical schools (eg, state demographics, public vs private, NIH research effort) predict output of rural physicians without also considering the effects of the medical schools? own policies and programs. Purpose: This study examines medical school commitment to rural policies and…

The purpose of the study was to determine if the constructs of teaching presence and the sense of community function as predictors of perceived student learning in an online course. Each participating online student completed an online survey comprised of an informed consent, an item regarding their perception of learning (Richmond et al., 1987),…

[Slides] presented at the American Educational Research Association (AERA) in 2009. This study investigated the presence of a general rise in high school grades without a corresponding rise in SAT scores, as well as different grading criteria between schools, as shown by differential relationships between AP course grades and exam scores. These…

For almost two decades proponents of educational reform have advocated the use of standards-based education in maths and science classrooms for improving teacher practices, increasing student learning, and raising the quality of maths and science instruction. This study empirically examined the impact of specific standards-based teacher…

This paper presents an illustration of how the regression-discontinuity design can be used to obtain an unbiased estimate of the causal effect of participating in a university remedial English program on first-year grade point average. First-year grade point averages were collected for 197 first-time, full-time university students, along with the…

This paper focuses on the influence of high school science class size on students' achievement in introductory college science courses and on the variation of teacher practice across class size. Surveys collected information about high school science class experiences from 2754 biology, 3521 chemistry, and 1903 physics students across 36 public…

Participants of stuttering treatment programs provide an opportunity to evaluate persons who stutter as they demonstrate varying levels of fluency. Identifying physiologic correlates of altered fluency levels may lead to insights about mechanisms of speech disfluency. This study examined respiratory, orofacial kinematic and acoustic measures in 35…

The Dawn Project is a system of care responsible for creating and implementing an interagency collaborative approach to service provision. Systems of care are spectrums of services organized to meet the needs facing youth with serious emotional and behavioral difficulties. This study examined the relationship between school involvement in the Dawn…

Research on student achievement within the University of Chicago School Mathematics Project (UCSMP) and Core-Plus Mathematics Project (CPMP) at the secondary level is beginning to accumulate, however, much less is known about how prepared these students are for post-secondary education. Therefore this study involving students within one tracked…