The study was conducted by scientists at SRI International, an independent , non-profit research institute based in California. In the largest study of its kind to date the experts centred their study on developmental outcomes of children aged four, looking at around 8,000 children who completed a developmental assessment.
The findings showed that those who had a regular bedtime were the better at languages, reading and maths and they also found that those who went to bed even earlier stood a higher chance of picking things up at a faster pace. In contrast to this, pre-school children who had less than the recommended 11 hours sleep had a higher risk of falling behind.
Experts have recommended that parents set an appropriate bedtime for their children so they are receiving a sufficient amount of sleep each night.