think about themselves. that's a lot of what they're addicted to. they're addicted to each other but also really addicted to the image of themselves as it's reflected in the eyes of their peers. it's about figuring out who they are. i think this platform -- these platforms really speed that process up in a way that's truly new. >> there's another phenomenon that people have written about since the 1960s, the imaginary audience. adolescents walk around think everyone is scrutinizing their life. this is the audience come to life. >> what's the message for parents watching this? what can a parent do? >> two things are important for parents. we need to talk with our children about their online lives and what social media platforms they're using. if we see them frantically tied to their phones say, is something going on? is there some sort of problem? we need to get them talking to us about what's going on online. that should start really early as soon as they get on these platforms.