This study of 640 twins with reading disability and 436 controls (mean age 12) examined external validity of the distinction between specific reading retardation and reading backwardness, in 3 domains: genetic etiology, sex ratio and clinical correlates, and neuropsychological profiles. There was no evidence of differential genetic etiology of the…

Normative data for the Wechsler Memory Scale-Revised were derived empirically using a sample of 50 volunteers between 25 and 34 years of age, who matched U.S. Census data on demographic characteristics. Differences between these empirical norms and published norms that were estimated statistically appear clinically significant. (SLD)

Two key concepts in diagnosing learning disabilities ("severe discrepancy" and "process dysfunction") are reviewed, and their relationship to the habilitation of learning is discussed. Guidelines are given for calculating a severe discrepancy, and the evaluation of processing skills is discussed. Strength models of remediation…

The general intelligence factor (g) was investigated using 170 university students across three batteries of ability measures: (1) a short-term memory battery; (2) the Multidimensional Aptitude Battery; and (3) a reaction time battery. Results support the notion of g and suggest short-term memory as an essential aspect of intelligence. (SLD)

Critiques Walker's article in this issue. Argues that Walker's data do not meet technical standards regarding individual placement tests for normative comparisons, interjudge reliability, or predictive validity, and therefore do not justify the use of the Gesell test to place children in developmental kindergarten or transitional first grade. (GLR)

Describes six types of instructional technology used in the nuclear industry: Study Pacs, computerized test banks, computer-based training, interactive videodisc, artificial intelligence, and full-scope simulation. Each description presents the need, training device, outcomes, and limitations or constraints on use. (SK)

Discusses the application of artificial intelligence to online information retrieval systems and describes several systems: (1) CANSEARCH, from MEDLINE; (2) Intelligent Interface for Information Retrieval (I3R); (3) Gausch's Query Reformulation; (4) Environmental Pollution Expert (EP-X); (5) PLEXUS (gardening); and (6) SCISOR (corporate…

Using a "review of reviews" methodology, this literature synthesis on stimulant use with children with attention deficit disorder compared three reviews from each of three review types (traditional, meta-analytic, general audience). A consensus was found to exist about the expected benefits and the acknowledged limitations of stimulant medication.…

Examined the relationship between depression rates, IQ, knowledge of the finality of death, exposure to suicidal behavior and knowledge of suicide methods. Found that the effect of these factors differed between suicidal and nonsuicidal psychiatrically hospitalized children and developmentally delayed adolescents. Also found that the factors had…

Describes research at Leicester Polytechnic Institute (UK) which examined possible applications of decision support system tools in libraries; in particular, this research explored the role of decision support systems in relation to the development of resources allocation modelling. (five references) (MAB)

In search of a better understanding of the learning difficulties in basic electricity, learning results, interest, achievement motivation, IQ, and cognitive development were investigated in students from both urban and rural schools. An analysis reveals that, for urban classes, learning is related primarily to interest and motivation and, for…

Explores the contributions of social scientists to the popular image of African Americans as natural athletes and subhuman beings. A review of social science literature of the late nineteenth and early twentieth centuries finds the present image perpetuated by sportscasters firmly rooted in this literature. (SLD)

Analyzes effect sizes in tails of distribution of scores in Feingold's study of joint effects of gender differences in mean and variability on 28 cognitive-ability scales. Effect sizes are smaller than Feingold assumed. Evaluates joint effect of gender differences by number of males and females in extreme score ranges. (SLD)

About 21% of all U.S. public school students attend schools equipped with multimedia computers, videodisc players, and other software designed to combine text, graphics, and sound in interactive applications. Multimedia software products can nurture the seven multiple intelligences identified by Howard Gardner, if properly implemented.…

This study examined the development of reading and phonological processing abilities of 209 first graders assessed at the beginning and end of the school year. The discriminant analysis, based on reading and intelligence data, correctly identified later group membership (students with and without reading disabilities and "garden variety" poor…