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Sleep Med. 2011 Aug;12(7):652-8. doi: 10.1016/j.sleep.2010.11.012. Epub 2011 May 26.

Aggressive behavior, bullying, snoring, and sleepiness in schoolchildren.

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  • 1Sleep Disorders Center, Department of Neurology, University of Michigan, Ann Arbor, MI 48109-0845, USA.



To assess whether urban schoolchildren with aggressive behavior are more likely than peers to have symptoms suggestive of sleep-disordered breathing.


Cross-sectional survey of sleep and behavior in schoolchildren. Validated screening assessments for conduct problems (Connor's rating scale), bullying behavior, and sleep-disordered breathing (pediatric sleep questionnaire) were completed by parents. Teachers completed Connor's teacher rating scale.


Among 341 subjects (51% female), 110 (32%) were rated by a parent or teacher as having a conduct problem (T-score ⩾65) and 78 (23%) had symptoms suggestive of sleep-disordered breathing. Children with conduct problems, bullying, or discipline referrals, in comparison to non-aggressive peers, more often had symptoms suggestive of sleep-disordered breathing (each p<0.05). Children with vs. without conduct problems were more likely to snore habitually (p<0.5). However, a sleepiness subscale alone, and not a snoring subscale, predicted conduct problems after accounting for age, gender, a measure of socioeconomic status, and stimulant use.


Urban schoolchildren with aggressive behaviors may have symptoms of sleep-disordered breathing with disproportionate frequency. Sleepiness may impair emotional regulation necessary to control aggression.

Copyright © 2011 Elsevier B.V. All rights reserved.

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