Visual impairment in persons with intellectual disability

Neuropsychological assessment of persons with physical disability, visual impairment or blindness, and hearing impairment or deafness.

Conducting assessment with individuals with physical disability, visual impairment or blindness, and hearing impairment or deafness poses significant challenges for the neuropsychologist. Although standards for psychological testing have been devised to address assessment of persons with disabilities, little research has been conducted to validate neuropsychological test accommodation and modif...

Diagnostic exome sequencing in persons with severe intellectual disability.

BACKGROUND The causes of intellectual disability remain largely unknown because of extensive clinical and genetic heterogeneity. METHODS We evaluated patients with intellectual disability to exclude known causes of the disorder. We then sequenced the coding regions of more than 21,000 genes obtained from 100 patients with an IQ below 50 and their unaffected parents. A data-analysis procedure ...

Does visual impairment lead to additional disability in adults with intellectual disabilities?

BACKGROUND This study addresses the question to what extent visual impairment leads to additional disability in adults with intellectual disabilities (ID). METHOD In a multi-centre cross-sectional study of 269 adults with mild to profound ID, social and behavioural functioning was assessed with observant-based questionnaires, prior to expert assessment of visual function. With linear regressi...

Consistent mapping and automatic visual search: comparing persons with and without intellectual disability.

BACKGROUND Merrill et al. (1996) reported that persons with intellectual disability (ID) were slower at learning a visual search task to automaticity relative to persons of the same age without ID. For persons without ID, automaticity develops most rapidly under conditions in which a response is always the same for a particular stimulus. This study was designed to investigate whether persons wi...

Pica among Persons with Intellectual Disability: Prevalence, Correlates, and Interventions