The computation and determination of the statistical significance of three coefficients of interpersonal attractiveness or cohesiveness in task-oriented or social groups are described. The approach is based on ratings made by each member of a group of all other group members. Experience using the technique is reviewed. (SLD)

Adherence to the arbitrary 0.05 level of significance as a benchmark for decisions about publishing research largely accounts for the popularity of one-tailed hypothesis tests. Effect size estimates, accompanied by confidence intervals or exact two-tailed probabilities, are generally more compatible with the growing meta-analytic view of social…

This study employed observed factor index scores as well as latent ability constructs from the "Wechsler Intelligence Scale for Children-Fourth Edition" (WISC-IV; Wechsler, 2003) in estimating reading and mathematics achievement on the "Wechsler Individual Achievement Test-Second Edition" (WIAT-II; Wechsler, 2002). Participants…

The seven cohort studies of the relation between prenatal and postnatal exposure to polychlorinated biphenyls (PCBs) to cognitive, neuropsychological and behavioral development have suggested that exposure to PCBs can cause persistent changes in cognitive functioning. D.V. Cicchetti, A.S. Kaufman, and S.S. Sparrow (this issue) apply six scientific…

We examined the factor structure and psychometric properties of the Trusting Relationship Questionnaire, a brief measure of relationship quality between youth and community-based service providers involved in their care. Data on youth residing in Therapeutic Foster Care and in Group Homes (N = 296) were collected. We identified a one-factor…

This study compared the effects student learning styles with Web-based learning (WBL) and traditional instructor-based learning (ILB) on student knowledge and satisfaction. Learning methods (Web-based and instructor-based) and learning styles (Diverger, Converger, Assimilator, and Accommodator) were the independent variables. Student knowledge and…

Exposure to gerontological content has been shown to positively influence student attitudes toward elders. Our School of Nursing recently phased out one curriculum while implementing a new integrated curriculum. In the former, aging content was presented in a first-semester senior course. In the new curriculum, students were introduced to aging…

If risk taking is in some measure a signal to others by the person taking risks, the model of "costly signaling" predicts that the more the apparent cost of the risk to others exceeds the perceived cost of the risk to the risk taker, the more attractive that risk will be as a signal. One hundred and twelve visitors to youth…

The purpose of this study was to investigate the effects of using Spanish captions, English captions, or no captions with a Spanish language soundtrack on intermediate university-level Spanish as a Foreign Language students' listening/reading comprehension. A total of 213 intermediate (fourth semester) students participated as intact groups in the…

This study focuses on the relationship between teacher-student interpersonal behaviour and students' attitudes toward science. To investigate this relationship, student perception data have been gathered with 1021 secondary science students, located in 31 classes in Kashmir, India. Teacher interpersonal behaviour was conceptualised in terms of two…

This study has two purposes: (a) methodological--to design and test a new instrument able to reflect changes in attitudes toward science over time, and (b) investigative--to find out the effect of two similar curricular treatments on the attitudes of two classes. Items about the relevance of science to students' lives were developed,…

Racial socialization and ethnic identity are emerging, albeit atheoretical, constructs that have been argued to promote prosocial outcomes among ethnic minority youths. Using structural equation modeling, the author explored the influence of racial socialization and ethnic identity on school engagement in a sample of 131 African American youths.…

It was hypothesized that a student's major-field area interacts with the text content in determining performance on the Test of English as a Foreign Language (TOEFL) reading passages. Results with 32,467 graduate school applicants, all nonnative English speakers, supported the study's hypothesis, as students in two major-field groups, the…

A study determined the effect of college-level trigonometry skills on the final grades of students enrolled in Introduction to AC/DC Circuits, the first course in the vocational electronics program at Seminole Community College (Florida). The literature was reviewed to develop a conceptual framework for the project. A pretest that measured…

The Australian literature suggests that students' academic success in tertiary education is principally influenced by their university entrance score. Personal, secondary school and university characteristics have more minor impacts on tertiary outcomes. Little research has been undertaken into the relationship between students' marks and the…