For most mums, hearing the news that a child’s behaviour is related to lack of sleep will come as no surprise.
Researchers in Finland have found that some youngsters who do not get enough sleep may not seem tired but instead behave badly.
The study of 280 seven and eight-year-olds revealed that the most hyperactive had enjoyed less than eight hours of sleep the night before.
Experts believe that ensuring children get a proper night’s kip would not only improve behaviour in healthy little ones but also help to calm those with attention deficit hyperactivity disorder (ADHD).
Dr Juulia Paavonen, who led the study, said: “We were able to show that short sleep duration and sleeping difficulties are related to behavioural symptoms of ADHD.
She added: “The findings suggest that maintaining adequate sleep schedules among children is likely to be important in preventing behavioural symptoms.”
Earlier this week, the Foundation for the Study of Infant Deaths (FSID) warned parents not to share a bed with their babies as it could increase the risk of death.