The cognitive underpinnings of arithmetic calculation in children are noted to involve working memory; however, cognitive processes related to arithmetic calculation and working memory suggest that this relationship is more complex than stated previously. The purpose of this investigation was to examine the relative contributions of processing…

Auditory and visual memory span were examined with 13 Down Syndrome and 15 other trainable mentally retarded young adults. Although all subjects demonstrated relatively poor auditory memory span, Down Syndrome subjects were especially poor at long-term memory access for visual stimulus identification and short-term storage and processing of…

Nine adults with Prader-Willi syndrome (PWS) and nine age- and IQ-matched adults with PWS completed standardized tests of long-term and short-term memory, visual and auditory processing, and reading and mathematics achievement. Contrary to previous findings, long-term memory in PWS subjects was strong relative to IQ and there was no evidence that…

"Sine-wave speech" sentences contain only four frequency-modulated sine waves, lacking many acoustic cues present in natural speech. Adults with (n=19) and without (n=14) dyslexia were asked to reproduce orally sine-wave utterances in successive trials. Results suggest comprehension of sine-wave sentences is impaired in some adults with…

Forty-eight children, either with or without a sensorineural hearing loss and either young (6 and 7 years old) or older (9 and 10 years old) reproduced sequences of acoustic stimuli that varied in number, temporal spacing, and type. Results suggested that the poorer performance of the hearing-impaired children was due to auditory processing…

The short-term verbal memory performance of 19 children and young adults with Down syndrome (DS) was contrasted with that of two control groups. Results confirm the expected verbal short-term memory deficit in DS subjects and suggest that this deficit is specific to memory for verbal information and is not primarily caused by auditory or…

Because visual short-term memory deficits are common in children with reading problems, a series of experiments were reviewed which examined the role of phonological processes in short-term memory. Results suggest that both developmental and individual differences in verbal memory span are related to efficient phonological processes. (Author/DB)

Forty-four university students, of whom 11 had learning disabilities (LD), were tested on tasks requiring multisyllabic pseudoword repetition, oral reading, memory for digits, and vocabulary. In both LD and non-LD groups, significant correlations were found between pseudoword repetition accuracy and reading, suggesting that poor readers also have…

Children (N=110, ages 8 to 10) with either normal or poor reading ability were tested on (1) ability to recall sequences of nonspeech tones presented at various rates, and (2) ability to make phonetic decisions using brief and transitional properties of the speech signal. Results did not support the hypothesis that temporal-processing deficits…

Differences in storage and rehearsal components of the phonological loop and visuo-spatial sketchpad were investigated in individuals with (n=19) and without (n=21) intellectual disability matched on memory span. Those with intellectual disability had specific difficulty in the rehearsal component of the phonological loop. Groups did not differ in…

Twenty students and 45 adults with visual impairments or blindness were administered a test of tactile concentration and short-term memory involving the reproduction of the order of finger stimulation using the Finger Knocking Box. Reliability and validity scores indicated encouraging results with use of the instrument. (JDD)

Describes study of children in grades one, three, and five that examined their active processing and short term memory (STM) of color, contour, and interior pattern of shapes found in computer digitized pictures. Age-related differences are examined, and the role of processing visual information in the learning process is discussed. (12…

Children (ages 9 and 14) with mild mental retardation and matched controls without mental retardation were given a test of their ability to perceive relations among different stimuli and transfer learned behavior from familiar to less familiar environments. Results showed that subjects with retardation relied only on prototype information, whereas…

Factor analysis performed on the Wechsler Intelligence Scale for Children-Revised (WISC-R) for 252 subjects (ages 6-16), who were mentally handicapped, slow learners, or learning disabled, identified 3 factors: verbal-conceptual, perceptual-spatial, and distractibility-short-term memory. Findings suggest that the factor example can be used to…

This exploratory study of the effects of the new visual communications media imagery (e.g., video games, digital television, and computer graphics) on the visual perception process is designed to provide a theoretical framework for research, introduce appropriate research instruments for such study, and experiment with the application of biometric…