title: Short sleep duration is associated with teacher-reported inattention and cognitive problems in healthy school-aged children.
abstract: OBJECTIVE
  Pediatric, clinical, and research data suggest that insufficient sleep causes tiredness and daytime difficulties in terms of attention-focusing, learning, and impulse modulation in children with attention deficit hyperactivity disorder (ADHD) or in those with ADHD and primary sleep disorders. The aim of the present study was to examine whether sleep duration was associated with ADHD-like symptoms in healthy, well-developing school-aged children.
  
  
  METHODS
  Thirty-five healthy children (20 boys, 15 girls), aged 7-11 years participated in the present study. Each child wore an actigraphic device on their nondominant wrist for two nights prior to use of polysomnography to assess their typical sleep periods. On the third night, sleep was recorded via ambulatory assessment of sleep architecture in the child's natural sleep environment employing portable polysomnography equipment. Teachers were asked to report symptoms of inattention and hyperactivity/impulsivity on the revised Conners Teacher Rating Scale.
  
  
  RESULTS
  Shorter sleep duration was associated with higher levels of teacher-reported ADHD-like symptoms in the domains of cognitive problems and inattention. No significant association between sleep duration and hyperactivity symptoms was evident.
  
  
  CONCLUSIONS
  Short sleep duration was found to be related to teacher-derived reports of ADHD-like symptoms of inattention and cognitive functioning in healthy children.
authors.affiliation: Department of Psychiatry, McGill University, Montreal, QC, Canada ; Attention, Behavior and Sleep Lab, Douglas Mental Health University Institute, Montreal, QC, Canada.
authors.forename: Reut
authors.initials: R
authors.lastname: Gruber
authors.forename: Sonia
authors.initials: S
authors.lastname: Michaelsen
authors.forename: Lana
authors.initials: L
authors.lastname: Bergmame
authors.forename: Sonia
authors.initials: S
authors.lastname: Frenette
authors.forename: Oliviero
authors.initials: O
authors.lastname: Bruni
authors.forename: Laura
authors.initials: L
authors.lastname: Fontil
authors.forename: Julie
authors.initials: J
authors.lastname: Carrier
keywords: ADHD-like symptoms; healthy school-aged children; hyperactivity; impulsivity; inattention; sleep duration