Many adults and teens are spending longer and longer hours engaged with digital media, and researchers are only beginning to grasp the impact on mental health and well-being.

Doreen Dodgen-Magee, a psychologist and the author of “Deviced! Balancing Life and Technology in a Digital World,” discusses how screens are profoundly altering who we are and how we behave. She points to concerns about increased feelings of loneliness, anxiety, and a reduced ability to tolerate boredom and to concentrate, but Dodgen-Magee says there are methods to help us all use technology in healthier ways.