Background: Previous research with earlier versions of the WISC and WAIS has demonstrated that when administered to people who have intellectual disabilities, the WAIS produced higher IQ scores than the WISC. The aim of this study was to examine whether these differences still exist. A comparison of the Wechsler Adult Intelligence Scale-Third…

This paper describes the mechanism of conceptual development by characterizing it as a cartooning process, which is a neurological mechanism which records a perceptual kind of sketch of the world in our brains. Its unique character, its biological basis, and its consequences for education are discussed. (Author/KC)

Comparison of the mental status of 30 subjects with Down's Syndrome mosaicism and 30 matched subjects with trisomy 21 Down's Syndrome found that the mean intelligent quotient of the mosaic Down's Syndrome group was significantly higher and that this group showed better verbal abilities and more normal visual-perceptual skills. (Author/DB)

Responses of 241 convicts on 18 primary mental abilities were factored to explore the idea that there are organizations among visual and auditory functions that operate independently from the relation-perceiving and correlate-educing functions of fluid and crystallized intelligence. The suggested reliable common-factor functions are discussed.…

It was found, among other things, that rural Ss performed significantly below their mental ages more frequently than urban Ss; and that between the chronological ages of 10 to 14 years, while urban Ss appeared to perform as expected from mental ages, a significant number of rural Ss performed below expectations. (Author/DLS)

Using a sample of 77 10th grade boys, the researchers studied the relationships between the mental abilities measured by the Differential Aptitude Tests and cerebral dominance (CD: the extent to which one hemisphere of the brain dominates the other for control of behavior). The surprise finding was that CD was negatively related to spatial…

Two groups of disabled readers, ages 8 and 11, were tested. Perceptual abilities related more strongly for younger students, while intelligence related more strongly for older students. Questions are raised about the validity of using expectancy formulae with younger disabled readers and the "learning disabilities" approach with older disabled…

Reported are the results of a series of studies conducted to identify the possible correlates of perceptual curiosity in retarded and normal IQ Ss (13-21 years old), and to determine the modifiability of perceptual curiosity in mentally retarded Ss through training and the possible transfer effects of such training. In a section on general…

Twenty-four gifted children with learning disabilities and a control group of nondisabled gifted children were administered the Wechsler Intelligence Scale for Children-Revised. The 8- to 12-year-old subjects were found to be more reliant on verbal conceptualization and reasoning than controls and demonstrated deficiencies in short-term auditory…

Investigated suppression of activation and retrieval paths to information stored in long-term memory. Subjects were 94 children in grades 1, 3, and 5. Found that the ability to intentionally inhibit the maintenance and recall of irrelevant information improves over the elementary years, and children are less able than adults to withhold production…

Data from the Japanese standardization of the Wechsler Preschool and Primary Scale for Intelligence were used to analyze the structure of abilities of Japanese children in terms of the Burt-Vernon hierarchical model of intelligence. It was suggested that the pattern of cognitive strengths and weaknesses that emerged would help clarify a number of…

Witkin's Embedded Figures Test (EFT) was used to measure the changes with age in field dependence and problem-solving ability. Qualitative data concerning problem-solving strategies and quantitative data were collected. EFT was administered to 12 females in each of the following decades: 20s, 30s, 40s, 50s, 60s, 70s. All subjects were moderately…

Draw-a-Person (DAP) samples from 108 adolescents and adults with mental retardation were scored using Naglieri's cognitive and emotional disturbance scoring systems. Visual-motor skills emerged as the best predictor of DAP cognitive scores, more predictive than intelligence. Findings suggest caution in using DAP as an index of intelligence or as a…

To assess the effects of age differences, type of task, intelligence (IQ), and reading achievement on referential communication performance, third and fifth grade children were asked to communicate messages for three types of tasks: word pairs, picture descriptions, and school-locations directions. The latter was specifically designed to assess…