Raging Debate: Smartphones & Teenage Mental Health

Digital technology has caused the biggest changes to teenage life in many decades. Typical American teenagers spend about half of their waking hours on their smartphones. They are on the phones when they are alone at home and when they are hanging out with friends.

When I compare my own teenage years in the 1980s with those of my parents in the 1950s and ’60s, I realize how much more rapidly habits have changed in the past 15 years than in the previous 50 years. My teenage experiences and those of my parents weren’t all that different. We talked on the telephone, drove cars, watched movies, we...