‘Have you heard of this BDSM trend?’ What I learned recording thousands of hours of teens on their phones

When documentary-maker Lauren Greenfield immersed herself in the online and offline lives of 25 teenagers, she unearthed a world of sexually explicit images, rape culture, bullying and suicidal ideation. Adolescence, she says, has become like the wild west

Reactions to Lauren Greenfield's documentary series Social Studies tend to fall into two categories. Young people think it is validating; adults think it's a horror show. After all, the screen of a teenager's smartphone is a shiny black hole to which access is rarely granted. Our kids are right there," as Greenfield puts it, and yet we don't really know what's going on in their lives."

Her five-part series, which tracks the online and offline lives of a group of teenagers and young adults - the first generation of social media natives - is being tipped for an Emmy. Under the noses of their parents, she captures teenagers climbing out of bedroom windows to spend the night with boyfriends, posting sexually explicit images, tracking their longest-ever fast (91 hours) and living out their experiences of rape, cyberbullying, whitewashing, the tyranny of Caucasian beauty standards and suicidal ideation. She makes adolescence look like the wild west.