Parents whose children use apps such as Facebook, Instagram and Snapchat are being warned their brains may be being "reprogrammed".
A new study suggests social media use is making some teenagers almost constantly check their phones after becoming hooked on "likes". The more young people check social media, the more sensitive they become to "social feedback" in the form of likes and comments, psychologists have said.
Social feedback includes social rewards and punishments such as thumbs up and down, tagging, reporting content or star ratings.
