How Does Social Media Affect Teen Brains? (Let Us Count the Ways)
The newly-released CDC statistics are alarming. Almost 1 in 3 high school girls say they have seriously considered suicide in the past year. One in 5 teens identifying as LGBTQ+ report attempting suicide in that time. Between 2009 and 2019, teen depression rates doubled – before the pandemic. An outstanding NPR article by Cory Turner asks the big question: Why now?
Mitch Prinstein, Ph.D., the chief science officer at the American Psychological Association, has thoughts about the role of social media in the teen mental health crisis, which he shared with the Senate Judiciary Committee in February.
“Our brains, our bodies, and our society have been evolving together to shape human development for millennia. … Within the last 20 years, the advent of portable technology and social media platforms [has been] changing what took 60,000 years to evolve,” Prinstein said. “We are just beginning to understand how this may impact youth development.”
NPR’s Turner has distilled Prinstein’s 22-page testimony down to ten key takeaways.
- Social interaction is key to child growth and development.
Human beings are social creatures. We learn through social interaction, and our interactions with peers have powerful and far-reaching effects. Prinstein noted that “numerous studies have revealed that children’s interactions with peers have enduring effects on their occupational status, salary, relationship success, emotional development, mental health, and even on physical health and mortality over 40 years later.” Surprisingly, “these effects are stronger than the effects of children’s IQ, socioeconomic status and educational attainment.”
So social interaction is essential. But is the kind of interaction social media platforms offer healthy?
- Social media platforms often promote the wrong kind of social interaction.
So what’s the right kind? According to Prinstein, we need and crave interactions and relationship-building “characterized by support, emotional intimacy, disclosure, positive regard, reliable alliance (e.g., ‘having each other’s backs’) and trust.”
Unfortunately, these kind of interaction are hard to come by on social media. Social media platforms tend to quantify engagement, emphasizing the numbers of “likes” and “followers” rather than the human beings behind them. Teens frequently post things, whether they are true or not, simply to attract attention.
These exchanges, Prinstein cautions, “create the exact opposite qualities needed for successful and adaptive relationships (i.e., [they are] disingenuous, anonymous, depersonalized). In other words, social media offers the ’empty calories of social interaction,’ that appear to help satiate our biological and psychological needs but do not contain any of the healthy ingredients necessary to reap benefits.”
Not only do they fail to satisfy our craving for genuine relationship, but these online interactions are decidedly unsatisfying and unhelpful. Studies have shown that “social media can actually make some teens feel lonelier.”
- Social media is not all bad.
Not all social media is negative. When young people form and maintain genuine friendships online, they can be healthy. For many marginalized teens, in particular, Prinstein noted, “digital platforms provide an important space for self-discovery and expression” and can help them forge meaningful relationships that may protect them from the effects of stress.
- Adolescence is a “developmentally vulnerable period” when teens crave social rewards but lack the ability to restrain themselves.
During puberty, Prinstein explained, the areas of the brain “associated with our craving for ‘social rewards,’ such as visibility, attention and positive feedback from peers” tend to develop well before the bits of the brain “involved in our ability to inhibit our behavior, and resist temptations.” The reward metrics many social media platforms use – such as “likes” and new “followers” – can trigger and feed that urge.
- “Likes” make bad behavior look good.
Are teens susceptible to following bad behavior they see on social media? Yes, and no.
The prefrontal cortex is the part of the brain that helps us make smart, safe decisions. “Research examining adolescents’ brains while on a simulated social media site…revealed that when exposed to illegal, dangerous imagery, activation of the prefrontal cortex was observed suggesting healthy inhibition towards maladaptive behaviors,” Prinstein told the Senate committee.
BUT…
When teens viewed these same illegal or dangerous behaviors on social media alongside icons noting that the negative content had been “liked” by others, the prefrontal cortex stopped working as well, Prinstein said, “suggesting that the ‘likes’ may reduce youths’ inhibition (i.e., perhaps increasing their proclivity) toward dangerous and illegal behavior.”
As the article pointedly summarized, “In other words, bad behavior feels bad — until other people start liking it.”
- Social media can even make “psychologically disordered behavior” look good.
Prinstein called out websites and online accounts that actively promote disordered-eating and nonsuicidal self-harm behaviors, like self-cutting.
“Research indicates that this content has proliferated on social media sites, not only depicting these behaviors, but teaching young people how to engage in [them], how to conceal these behaviors from adults, actively encouraging users to engage in these behaviors, and socially sanctioning those who express a desire for less risky behavior.”
- Extreme social media use looks a lot like addiction.
A host of research has shown that excessive social media use can resemble the classic symptoms of other addictions, because “regions of the brain activated by social-media-use overlap considerably with the regions involved in addictions to illegal and dangerous substances,” Prinstein explained. Teen brains have not yet developed the self-control tools they will have as adults.
[How Is TikTok Like Crack Cocaine? For more on social media and addiction, read CNN’s interview with Dr. Anna Lembke, professor of psychiatry at Stanford University School of Medicine, summarized here.]
- The threat of online bullying is real.
Prinstein testified that “victimization, harassment, and discrimination against racial, ethnic, gender and sexual minorities is frequent online and often targeted at young people. LGBTQ+ youth experience a heightened level of bullying, threats and self-harm on social media.”
Cyberbullying has serious physical effects, he said, as “brain scans of adults and youths reveal that online harassment activates the same regions of the brain that respond to physical pain and trigger a cascade of reactions that replicate physical assault and create physical and mental health damage.”
According to the Centers for Disease Control and Prevention, “youth who report any involvement with bullying behavior are more likely to report high levels of suicide-related behavior than youth who do not report any involvement with bullying behavior.”
This February, a 14-year-old New Jersey girl took her own life after being attacked by fellow students at school and a video of that assault was posted to social media.
- It’s hard not to compare yourself to what you see in social media.
Even adults are susceptible to comparison on social media – how we look, where we vacation, how our kids are doing – and for teens, these comparisons can take on outsize significance.
As Prinstein testified to the Senate committee, “Psychological science demonstrates that exposure to this online content is associated with lower self-image and distorted body perceptions among young people. This exposure creates strong risk factors for eating disorders, unhealthy weight-management behaviors, and depression.”
- Sleep is more important than those “likes.”
Studies show that over half of all adolescents use screens right before bedtime, which can interfere with proper sleep. Sleep deprivation not only leads to poorer mental health, lower grades, and higher stress, but Prinstein noted, “inconsistent sleep schedules are associated with changes in structural brain development in adolescent years. In other words, youths’ preoccupation with technology and social media may deleteriously affect the size of their brains.”
Read the full article here.
Or read Protecting Our Children Online, the testimony of Mitch Prinstein, Ph.D., chief science officer at the American Psychological Association, to the Senate Judiciary Committee on February 14, 2023.
Turner, Cory. “10 things to know about how social media affects teens’ brains.” NPR.org, 16 Feb 2023, https://www.npr.org/2023/02/16/1157180971/10-things-to-know-about-how-social-media-affects-teens-brains.
Photo by Sanket Mishra on Unsplash