Jean Twenge, Professor of Psychology at the San Diego State University, writes:
In just the five years between 2010 and 2015, the number of U.S. teens who felt useless and joyless–classic symptoms of depression–surged 33 percent in large national surveys. Teen suicide attempts increased 23 percent. Even more troubling, the number of 13-to-18-year-olds who committed suicide jumped 31 percent.
In a new paper published in Clinical Psychological Science, my colleagues and I found that the increases in depression, suicide attempts and suicide appeared among teens from every background–more privileged and less privileged, across all races and ethnicities and in every region of the country. All told, our analysis found that the generation of teens I call “iGen” (those born after 1995) is much more likely to experience mental health issues than their millennial predecessors.
Teens now spend much less time interacting with their friends in person. Feeling socially isolated is also one of the major risk factors for suicide. We found that teens who spent more time than average online and less time than average with friends in person were the most likely to be depressed. Since 2012, that’s what has occurred en masse: Teens have spent less time on activities known to benefit mental health (in-person social interaction) and more time on activities that may harm it (time online).
Teens are also sleeping less, and teens who spend more time on their phones are more likely to not be getting enough sleep. Not sleeping enough is a major risk factor for depression, so if smartphones are causing less sleep, that alone could explain why depression and suicide increased so suddenly.
But some vulnerable teens who would otherwise not have had mental health issues may have slipped into depression due to too much screen time, not enough face-to-face social interaction, inadequate sleep or a combination of all three.
It might be argued that it’s too soon to recommend less screen time, given that the research isn’t completely definitive. However, the downside to limiting screen time – say, to two hours a day or less – is minimal. In contrast, the downside to doing nothing – given the possible consequences of depression and suicide – seems, to me, quite high.
It’s not too early to think about limiting screen time; let’s hope it’s not too late.