The aim of this study was to assess the influence of sex, age, level and etiology of intellectual disability on visual-motor integration in children with intellectual disability. The sample consisted of 90 children with intellectual disability between 7 and 15 years of age. Visual-motor integration was measured using the Acadia test of…

Everyday experience suggests that drivers are less susceptible to motion sickness than passengers. In the context of inertial motion (i.e., physical displacement), this effect has been confirmed in laboratory research using whole body motion devices. We asked whether a similar effect would occur in the context of simulated vehicles in a visual…

Aim: The cognitive deficits present in the Duchenne muscular dystrophy (DMD) are not yet well characterized. Attention, considered to be the brain mechanism responsible for the selection of sensory stimuli, could be disturbed in DMD, contributing, at least partially, to the observed global cognitive deficit. The aim of this study was to…

We previously reported a meta-analysis of explicit memory studies in populations with intellectual disability (ID). The current study discusses the educational implications of this meta-analysis. The main factors at the core of these implications can be divided into two categories: those related to task characteristics (e.g., depth of processing,…

Behavioral phenotypes of individuals with Williams syndrome and individuals with Down syndrome have been contrasted in relation to short-term memory. People with Down syndrome are stronger visuospatially and those with Williams syndrome are stronger verbally. We examined short-term memory, then explored whether dual-task processing further…

Cognition-related brain responses to meaningful and meaningless figures were registered in 5-year-old kindergarten children who either had been subtyped as being at-risk of developing an L- or P-type dyslexia (LAL versus LAP) or who were not at-risk. While identifying, naming, or categorizing pictures, event-related potentials (ERP) were…

In the article the author refutes J. Fletcher and P. Satz's analysis of the etiology of reading disability on logical, theoretical, and empirical grounds. (Author/PHR)

In the rejoinder the authors describe the methodological and interpretive factors in the Vellutino et al, experiments which limited the degree to which the studies refuted perceptual deficit hypotheses of reading disability. Note: for more of the interchange see EC 114 687-688. (Author/PHR)

Examines the assumption that the parvocellular system is suppressed by the magnocellular system during saccadic eye movements and that this visual deficit is associated with dyslexia. Evidence from six studies indicates the magnocellular system is suppressed during saccadic eye movements, disproving the magnocellular deficit theory of dyslexia.…

A study investigated whether 32 adolescents with reading disabilities (RD) were slower at processing visual information compared to children of comparable age and reading level, or whether their deficit was specific to the written word. Adolescents with RD demonstrated difficulties in processing rapidly presented verbal and nonverbal visual…

A study compared 11 Italian children (ages 7-11) with nonverbal learning disabilities (NVLD) to 49 controls on four tasks requiring visuospatial working memory and visual imagery. Results found the children with NVLD showed deficits in the use of visuospatial working memory and visual imagery. (Author/CR)

The paper evaluates the empirical and theoretical basis upon which several recent studies reject the hypothesis of a visual-perceptual deficit in reading disabilities. (Author)

Study of the visual development of 38 infants, children, and youths who were neurologically impaired following perinatal hypoxia found that all children showed impairments of 1 or more visual functions, though visual development continued and visual improvements were demonstrated up to age 16. (Author/JDD)

A study involving 93 children (ages 10-12), 295 with poor reading skills, found many children with dyslexia and some garden-variety poor readers showed significant left neglect on the Clock Drawing Test. In poor readers with dyslexia, spatial construction deficits were observed like those of parents with acquired right-hemisphere lesions.…

In order to better understand the neuropsychological underpinnings of the relative strength in word identification in individuals with Down syndrome, the performance of children and adolescents with Down syndrome (N=29) was compared to the performance of a nonverbal-IQ matched group of children and adolescents with developmental disabilities of…