This paper examines task design that affords deep changes in mathematical thinking in the context of peer interaction. We describe a study in which 60 low-level high-school students solved a proportional reasoning task, the "blocks" task as individuals and/or in dyadic interaction. We show that we could tailor the design of the task in order to…

Differential item functioning (DIF) continues to receive attention both in applied and methodological studies. Because DIF can be an indicator of irrelevant variance that can influence test scores, continuing to evaluate and improve the accuracy of detection methods is an essential step in gathering score validity evidence. Methods for detecting…

This study tested the hypothesis that positive career orientation can prevent adolescents from engaging in or escalating problem behaviour. A 1-year, longitudinal study was conducted on a sample of 234 junior-high and high-school students, who were 14.8 years old on the average in the beginning of the study. Using structural equation modeling, a…

The purpose of this study was to measure librarian image as perceived by children. The project focused on the hypotheses that the traditional negative image of librarians is prevalent among school-age children and also, that this image is more prevalent among boys than among girls. The study involved surveying two suburban fourth grade populations…

The meta-analytic techniques of G. V. Glass (1976) and J. E. Hunter and F. L. Schmidt (1977) were compared through their application to three meta-analytic studies from education literature. The following hypotheses were explored: (1) the overall mean effect size would be larger in a Hunter-Schmidt meta-analysis (HSMA) than in a Glass…

For 15 years an ongoing research project at the University of Pittsburgh has focused on the effects of variations in visual complexity and color on the storage and retrieval of visual information by learners. Research has shown that visual materials facilitate instruction, but has not fully delineated the interactions of visual complexity and…

Investigated four hypotheses formulated by Jensen with regard to his theory of the relationship between cognitive abilities and socioeconomic status. Preschool children identified in the upper SES level performed with more accuracy on both levels of tasks as defined by Jensen. (Author/SDH)

This study tested the hypothesis that children bring specifiable expectations to their use of interactive computer programs, and that these expectations will determine, to a large extent, which features of a given program will be motivating to a child. It is also argued that the different genres of interactivity relied upon by software designers…

Numerous designs using analysis of variance (ANOVA) to test ordinal hypotheses were assessed using a Monte Carlo simulation. Each statistic was computed on each of over 10,000 random samples drawn from a variety of population conditions. The number of groups, population variance, and patterns of population means were varied. In the non-null…

This study hypothesized that subjects who display proportional responses on the Pouring Water Task have developed the ability to comprehend logical arguments of the form referred to as "reasoning to a contradiction," while subjects who display additive responses on the same task have not. To test this hypothesis, 100 additive and…

Theories employed to explain regularities in social behavior often contain explicit or implicit reference to the presence of nonlinear and/or nonadditive (i.e., multiplicative) relationships among germane variables. While such nonadditive features are theoretically important, the inclusion of quadratic or multiplicative terms in structural…

This study describes preliminary work on the development of a scale to assess attitude toward public drinking involvement. A sample of 46 students at a west-coast university participated in the study. Respondents completed a questionnaire containing a measure of Attitude Toward Public Drinking Involvement Scale (ATPDIS) and various validity…

Because of the limitations of previous related studies, this analysis was undertaken to examine in greater depth the relationship between television viewing, reading performance, and related reading activities. A synthesis of eight statewide assessments and an analysis of the 1984 National Assessment of Educational Progress were designed to…

This report investigated the relationship between learning to program LOGO and the development of problem solving skills. Subjects were 133 students in grades 4-8 who had at least 30 hours of experience with both graphics and lists programming in Logo. Students were randomly assigned to one of three contextual groupings, which received graphics,…

This study examines the nature of the highly variable black-white difference across diverse tests and indicates the major systematic source of this between-population variation, namely, Spearman's g. Eleven large-scale studies (discussed in the appendix), each one comprising anywhere from 6 to 13 diverse tests, show a significant and substantial…