Individual differences in measures of prereading skills and in questionnaire measures of 4-5-year-old twins' print environments in Australia, Scandinavia, and the United States were explored with a behavioral-genetic design. Modest phenotypic correlations were found between environmental measures and the twins' print knowledge, general verbal…

The purpose of this study was to examine the utility of the Differential Ability Scales (DAS) in distinguishing preschoolers with specific language impairment (SLI) and specific subtypes of language delays. Three hundred forty-eight language-impaired preschoolers' response patterns across DAS General Conceptual Ability (GCA), Ability cluster, and…

The classic ("status attainment") model of educational and occupational attainment suffers from three related shortcomings when used as a tool for comparative or policy-oriented research on social mobility: (1) ambiguity of model parameters as measures of opportunity for achievement vs. ascription; (2) vulnerability to incomplete specification of…

Language used in situations in which speakers cannot rely on shared social, physical, or historical contexts has been referred to as "decontextualized." Many researchers believe that the use of decontextualized language is at the core of literacy--that reading and writing are consummate acts of decontextualization. Somewhat intermediate…

A study examined the differences between 17 children with language disorders and 20 children with normal language development (ages 8-13) in the way they developed shared knowledge with an adult using an interactive communication task. The structure interaction map task involved the child describing a route through a simple schematic map to an…

The Detroit Tests of Learning Aptitude, 3rd Edition (DLTA-3) is a battery of 11 subtests that measure different but interrelated mental abilities. These are clinically assessed by the battery, which further attempts to delineate the factors that contribute to Spearman's factor for general intelligence. The DLTA-3 has age norms expressed for test…

This report sets out results for Australia arising from its participation in the Second International Science Study (SISS). The focus is on Year 12 students, including those studying science and those not currently studying science. Most of the results for the science students are presented separately for those specializing in biology, chemistry,…

Gifted underachievers (n=108) were compared to gifted high achievers (n=96). All children had Wechsler Intelligence Scale for Children - Revised (WISC-R) IQ scores of 130 or greater, but underachievers were performing at or below the 50th percentile in at least one major area of achievement, whereas high achievers were at the 96th percentile or…

Reading encompasses a wide range of verbal processes, among them such simple verbal processes as word decoding, letter recognition, name retrieval, and semantic access. The question is whether simple verbal processing differences are adequate to account for general reading ability differences. Across different verbal domains and different ages,…

Recent literature on individual differences in verbal ability indicates that people demonstrating high verbal comprehension are quicker and more accurate in identifying lexical items, as well as more rapid in parsing sentences. They are not, however, more sensitive to the general gist of a passage, and thus do not respond to priming from context…

Shavelson's hierarchical facet model of self-concept was used with a sample of 158 college students, using a revision of Fleming's Self-Rating Scales (SRS). It was hypothesized that six factors would be identified in exploratory analysis corresponding to six SRS scales: self-regard, social self-esteem, physical appearance, physical abilities,…

One population at risk of academic failure comprises students who are of average ability, but who score significantly higher in nonverbal aptitude than verbal aptitude. Careful identification and instructional intervention can help these students to perform better. The findings of two studies are presented. The first study was conducted in 1964…

Two experiments investigated the role of children's assessments of their performance on their decisions to seek help and their preferences for different types of assistance. Blocked into low and high verbal skill groups, participants in study 1 were 84 middle-class third- and fifth-grade elementary school students. Subjects performed a multi-trial…

Research on hemispheric specialization indicates that the two hemispheres of the brain are specialized to perform different functions. A visual style of thinking is associated with the right hemisphere, while a verbal style is associated with the left hemisphere. The possibility of a relationship between psychological androgyny and sex role…

For use by teachers in helping students become better writers, this booklet describes and illustrates cognitive mapping, a prewriting technique that helps students combine their verbal and visual skills in order to produce ideas and to plan stories, plays, reports, or essays. The first section of the booklet discusses the interrelations between…