Rapid naming deficits in children and adolescents with reading disabilities and attention deficit hyperactivity disorder

Seventy-one children in three groups treading disabilities, ADI ID without reading disabilities, and normal controls) were compared on their ability t o rapidly name colors, letters, numbers, and objects (RAN Tasks) and altern ating letters/numbers and letters/numbers/colors (RAS tasks). Children with reading disabilities were found to be slower on letter- and number-naming tasks and made more errors on all tasks than controls or children with ADHD . There was an age effect fur the RAN/RAS tasks, with younger children with reading disabilities performing more poorly on all tasks, while the older children with reading disabilities showed poorer performance only on the le tter- and number-naming tasks. (C) 2000 Academic Press.