A study in the March 1 issue of SLEEP found that the ability of children with attention deficit hyperactivity disorder to remain vigilant and attentive deteriorated significantly after losing less than one hour of nightly sleep for a week. The daytime performance of children with ADHD deteriorated to the clinical range of inattention after mean nightly sleep loss of about 55 minutes for six nights. The results suggest that even moderate sleep loss could have a negative effect on the academic performance of children with ADHD, UPI reports. Read the AASM press release.