Engineering students were given a mental rotation test at the beginning and end of their first-year engineering course and again several years later to assess the relationship between spatial visualization skill and retention in engineering. No relationship was found between task scores and retention; however, a course in design and graphics…

Compares directors' use of Public Library Data Service statistics and Federal-State Cooperative System for Public Library Data statistics to show how directors make use of statistics and to highlight the statistical information that directors find particularly useful. The survey addressed: last time of use; ways of use; frequency of use of…

Proposes that an important role for connectionist research in language acquisition is analyzing what linguistic information is present in the child's input. Recent connectionist and statistical work analyzing the properties of real language corpora suggest a priori objections against the utility of distributional information are misguided. This…

Describes an exercise for college and high school students that relates descriptive statistics to the regional climatic classification. The exercise introduces students to simple calculations of central tendency and dispersion, the construction and interpretation of scatterplots, and the definition of climatic regions. Forces students to engage…

Presents guidelines for statistics for Web-based information resources developed by the International Coalition of Library Consortia (ICOLC). Outlines use elements that must be provided: number of queries, menu selections, sessions, turn-aways, and items examined. Discusses privacy; user, institutional, and consortial confidentiality;…

Although both low socioeconomic status and cigarette smoking increase health problems and mortality, their possible combined or interactive influence is less clear. On one hand, the health of low status groups may be harmed least by unhealthy behavior such as smoking because, given the substantial health risks produced by limited resources, they…

Introduction: Having a mentor during residency is often linked to greater success in professional development. The present study compares changes in the percentage of residents with mentors in 1999 and in 2004, while considering current residents' perceptions of their mentors, with particular attention focused on what role race and gender might…

The study describes the factors that render possible and restrain students' learning when they try to develop new knowledge through collaboration in a net-based learning environment. The pedagogical platform takes as its starting point a framework of socio-cultural theories of learning and is based on dialogues and collaborative situations in…

Orton-Gillingham (OG) and Orton-Gillingham-based reading instructional programs are commonly implemented reading programs in the United States. Twelve studies that employed quasi-experimental or experimental designs are reviewed. These studies included elementary students, adolescents, and college students. Of the 12 studies, 5 reported that the…

Assessing use of language learning strategies has become commonplace around the world. One strategy assessment tool is the questionnaire, which usually asks students to report on their typical, general use of language learning strategies. Because of this general focus, most questionnaires do not require respondents to complete an actual language…

This study compared the test scores and time required by high school students who are blind, sighted, or have low vision to complete tests administered in written and oral formats. The quantitative results showed that the blind students performed better on multiple-choice tests in braille and needed more time while taking tests in braille. The…

The Helping One Student to Succeed (HOSTS) Language Arts volunteer tutoring program was evaluated by comparing pre- and post-intervention scores on standardized measures of reading using a 5-month test-retest interval. Students (n = 129) from six elementary schools in Michigan that utilize the HOSTS program served as the experimental group, and…

Over the course of development, the ability to switch between different tasks on the basis of feedback cues increases profoundly, but the role of performance monitoring remains unclear. Heart rate indexes can provide critical information about how individuals monitor feedback cues indicating that performance should be adjusted. In this study,…

Researchers sometimes need a statistical test of the hypothesis that two values of Cronbach's alpha reliability coefficient are equal. The situation may involve scores from two different measures administered to independent random samples or from the same measure administered to random samples from two different populations. Feldt derived a test…

Cudeck and Browne (1983) proposed using cross-validation as a model selection technique in structural equation modeling. The purpose of this study is to examine the performance of eight cross-validation indices under conditions not yet examined in the relevant literature, such as nonnormality and cross-validation design. The performance of each…