A glossary of terms relevant to disability, accessibility and technology

A cognitive impairment in comprehension or in using language, spoken or written, that manifests itself in a person’s ability to listen, think, speak, read, write, spell, or to do mathematical calculations (e.g., dyslexia, dysnomia, dysgraphia). The term does not include persons who have learning difficulties that are primarily the result of mental retardation, emotional disability, or environmental, cultural or economic disadvantage.