Most parents and teachers have noticed the severe increase in depression and anxiety among young children and teenagers over the last decade. Many have speculated that smartphones and social media cause these mental health and behavior problems. It turns out that they were right. Social psychologist Jonathan Haidt has extensively researched the effects of social media on kids and has written about them in his New York Times bestselling book, "The Anxious Generation: How the Great Rewiring of Childhood is Causing an Epidemic of Mental Illness."
