Background: PraderWilli syndrome (PWS) is a genetic disorder caused by the absence of expression of maternally imprinted genes on the long arm of chromosome 15 (15q 11-13). There are two main genetic sub-types: (1) deletion, caused by the absence of paternally derived genetic material; and (2) uniparental disomy (UPD), where two copies of…

Verbal and spatial working memory were examined in high-functioning children, adolescents, and adults with autism compared to age and cognitive-matched controls. No deficit was found in verbal working memory in the individuals with autism using an "N"-back letter task and standardized measures. The distinction between the "N"-back task and others…

Recent findings raised evidence that in early-onset left temporal lobe epilepsy, women show greater functional plasticity for verbal memory than men. In particular, women with lesion- or epilepsy-driven atypical language dominance show an advantage over men. The question asked in this study was whether there is evidence of sex- and language…

The author reports on recent Soviet studies of developmentaly delayed (DD) children, which compare clinical characteristics of DD, mentally retarded, and normal children relative to such aspects as attention, memory, intellectual functioning, and verbal facility. Noted is the similarity of DD children to American learning disabled children.…

The authors report data from a longitudinal study that addresses the relations between working memory capacity and reading comprehension skills in children aged 8, 9, and 11 years. At each time point, the authors assessed children's reading ability, vocabulary and verbal skills, performance on 2 working memory assessments (sentence-span and digit…

This study used neuroimaging and behavioral techniques to examine the claim that processing capacity limitations underlie specific language impairment (SLI). Functional magnetic resonance imaging (fMRI) was used to investigate verbal working memory in adolescents with SLI and normal language (NL) controls. The experimental task involved a modified…

Parenting a gifted child may not be what Mom and Dad expected when they read parenting books and first saw that innocent infant face. A gifted child is a joy and a challenge--rarely predictable, sometimes frustrating and annoying, but never boring. This article discusses the characteristics and vulnerabilities of the gifted. The author offers some…

The Cognitive Levels Test, for use with ages 5-21, is designed as a quick cognitive assessment instrument with 4 subdomains: verbal reasoning, abstract reasoning, quantitative reasoning, and memory. This paper describes the test's administration, summation of data, standardization, reliability, and validity. (JDD)

The Stanford Binet Intelligence Scale measures four areas of cognitive abilities (verbal reasoning, abstract/visual reasoning, quantitative reasoning, and short-term memory), providing a continuous scale for appraising cognitive development from age two to adult. This paper describes the test's administration, standardization, reliability, and…

This book examines the science and politics of cognitive sex differences, reflecting theories and research in the area over the past several years. Eight chapters discuss: (1) "Introduction and Overview" (e.g., theoretical approaches, values and science, and terminology); (2) "Searching for Sex Differences in Cognitive…