We all do it. No sooner do we post something on social media than we quickly count the likes we’ve racked up on our latest selfie. As much as we don’t like to admit it, those likes, especially as they increase, make us feel good. So why is this? We spoke to some experts to find out. Blame it on the dopamine There's something very satisfying about seeing a like on one of our posts, but is it actually addictive? “In doing research for my book, I learned scientists have not yet committed to declaring that social media is absolutely...