Acclaimed psychologist Jonathan Haidt reveals how the decline of free-play in childhood and the rise of smartphone use among adolescents is changing our world.

From 2010, as teens traded in their flip phones for smartphones packed with social media apps, unsupervised time online soared while face-to-face conversations with friends and family plummeted, and so did mental health. This profound shift took place against a backdrop of diminishing childhood freedom and over-supervision in the real world, depriving children of the experiences they most need to become strong and self-governing adults.

The Anxious Generation delves into the latest research to show how this shift from free-play to smartphones disrupts development – from sleep deprivation to addiction – and lays the foundations of isolation and fear that define society today.