Neuropsychological performance of 43 girls, aged 6 to 17 years, with ADHD and 36 controls without ADHD was assessed at the Massachusetts General Hospital, Boston. Girls with ADHD were significantly more impaired on tests of attention, intellectual performance, and achievement, and had higher rates of learning disability than controls. In contrast, impairments in performance on measures of executive function, learning, and memory were not significant. 
COMMENT. Neuropsychological deficits involving executive function are less remarkable in girls than in boys with ADHD, but impairments of intellectual function, attention, and arithmetic and reading are common to both sexes. Psychiatric comorbidity is not a factor in the occurrence of cognitive dysfunction in children with ADHD.