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Teens are growing up more slowly than they did two decades ago, and today's 18-year-olds act like the 15-year-olds of the 1990s, per a new study. Researchers found that U.S. teens are engaging in adult activities — drinking, driving, dating and working for pay — later than they used to, delaying the transition from adolescence into adulthood.

The big picture: Avoid falling into the trap of seeing these trends as all good or all bad. "It's a tradeoff," lead researcher and author of a new book, iGen, Jean Twenge tells Axios. Today's teens may be less prepared for adulthood, but they're safer, with rates of car accidents and teen pregnancies falling dramatically.

Expand chart
Data: The Decline in Adult Activities Among U.S. Adolescents, 1976–2016, Twenge et al.; Chart: Lazaro Gamio / Axios

The takeaways:

  • 66% of 12th graders surveyed in 2014 had tried alcohol, compared to 81% in 1994
  • 73% of them had drivers' licenses, down from 85% 20 years prior
  • 58% went on dates, compared to 83% of 12th graders in 1994
  • 56% worked for pay, down from 72% in 1994

The prevalence of risky behaviors has also declined, says Jeffrey Arnett, a professor of psychology whose work is cited in the study. Rates of binge-drinking, teen pregnancy and teen crime are lower than ever.

Yes, but: The transition into adulthood has slowed down so much that Arnett says people age 18 to 29 are living through a new life stage between adolescence and adulthood: "emerging adulthood." The consequences of this are that teens are less prepared for college and the workplace, Twenge says. "What really strikes me is that 'adulting' is now a verb," she says. "What's the alternative? Are you gonna go back to being a child?"

Be smart: Some of these behavioral changes can be attributed to technology, specifically the rise of the smartphone, Twenge recently wrote in the Atlantic. Teens are spending less time out getting into trouble and more time at home on their phones. But delaying adulthood also has to do with the fact that people live longer than they used to and more people expect to go to college instead of directly entering the workforce.

Twenge's Atlantic piece also claimed that heavy smartphone use has an adverse effect on teen mental health. But to say smartphones are destroying a generation is alarmist, tech writer and researcher Alexandra Samuel wrote in JSTOR in response. Data shows that "high school students who use social media a lot aren't any more depressed than those who use it a little," she wrote.

But Twenge is right to say technology is quickly widening generational gaps, Samuel tells Axios. "The pace of change is so rapid now that we raise our children in a world completely different from the one we grew up in," she says.

What's next: As technology advances, these trends could accelerate, Twenge says. "Soon 18-year-olds could look like the 13-year-olds" of the past.

Go deeper

Updated 1 hour ago - Science

Volcanic eruption in Tonga caused "significant" damage

This satellite image of the eruption on Jan. 15 taken by Himawari-8, a Japanese weather satellite operated by Japan Meteorological Agency and released by National Institute of Information and Communications Technology (NICT). Photo: NICT via AP

Significant damage has been reported in Tonga following an undersea volcanic eruption on Saturday, which covered the Pacific nation in ash and cut off communication lines.

Driving the news: The eruption triggered tsunami warnings across Tonga's islands and in other regions, including the West Coast of the U.S. and New Zealand.

Updated 3 hours ago - Politics & Policy

Trump dogs "dull" DeSantis ahead of potential 2024 matchup

Photo illustration: Sarah Grillo/Axios. Photo: Paul Hennessy/SOPA Images/LightRocket via Getty Images

Donald Trump is trashing Ron DeSantis in private as an ingrate with a "dull personality" and no realistic chance of beating him in a potential 2024 showdown, according to sources who've recently talked to the former president about the Florida governor.

Why it matters: The two are among the most popular Republicans in the country, and as the former president eyes another run in 2024, he's irked by DeSantis' popularity and refusal to rule out running against him.

Updated 3 hours ago - Politics & Policy

Omicron dashboard

Illustration: Brendan Lynch/Axios

  1. Health: Concerns grow over CDC's isolation guidelines — Experts warn of more COVID-19 variants after Omicron — WHO recommends 2 new treatments — What "mild" really means when it comes to Omicron.
  2. Vaccines: America's vaccination drive runs out of gas— Puerto Rico expands booster shot requirements— Supreme Court blocks Biden's vaccine mandate for large employers.
  3. Politics: Vivek Murthy calls SCOTUS vaccine mandate block "a setback for public health" — Focus group says Biden weak on COVID response, strong on democracy.
  4. Economy: America's labor shortage is bigger than the pandemic— — CDC COVID guidance for cruise ships to be optional starting Saturday — The cost of testing.
  5. States: America struggles to keep schools open — Youngkin ends mandates for masks in schools and COVID vaccinations for state workers.
  6. World: Beijing reports first local Omicron case weeks before Winter Olympics — Teachers in France stage mass walkout over COVID protocols.
  7. Variant tracker