The US-Swedish study found that children aged 10 to 14 averaged 1.4 hours a day on social media. avan Images/AlamyThe US-Swedish study found that children aged 10 to 14 averaged 1.4 hours a day on social media. avan Images/AlamySocial media use damages children’s ability to focus, say researchersStudy of 8,300 US children suggests social media may be contributing to a rise in ADHD diagnosesIncreased use of social media by children damages their concentration levels and may be contributing to an increase in cases of attention deficit hyperactivity disorder, according to a study. The peer-reviewed report monitored the development of more than 8,300 US-based children from the age of 10 to 14 and linked social media use to “increased inattention symptoms”. Reseachers at the Karolinska Institute in Sweden and the Oregon Health & Science University in the US found that children spent an average of 2.3 hours a day watching television or online videos, 1.4 hours on social media and 1.5 hours playing video games. No link was found between ADHD-related symptoms – such as being easily distracted – and playing video games or watching TV and YouTube.