Research shows that, over the past two decades, rates of mental illness have been increasing in adolescents in many countries. While some scientists point to soaring use of smartphones and social media as a key driver for this trend, others say the evidence does not show a large effect of these technologies on teenagers’ psychological health.

Parents are more worried than teens about teen mental health. Both groups – especially parents – partly blame social media. But teens also see benefits.

A recent Pew Research Center study also found 48% of teens agree social media has a largely negative impact on teens.