Neuroscientists Reveal That True Adulthood May Not Arrive Until Your 30s

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April 1, 2019

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It seems we may have a lot more time to embrace our inner “child” than we previously thought. If you’re navigating your 30s and still receiving reminders to “act your age,” take heart—science is on your side. According to leading neuroscientists, the transition to full adulthood doesn’t truly happen until we reach our 30s.

While society typically marks adulthood at the age of 18, any parent of a college student can attest that this is more of a formality than a reality. The revelation that researchers believe genuine maturity doesn’t set in until our 30s is both eye-opening and comforting. Honestly, I’m not alone in feeling surprised that I’m considered an adult when I still had to figure out my washing machine just a few years ago!

Research indicates that the human brain continues to undergo significant development well past the age of 18. It’s not as if you magically become an adult with wisdom and judgment just because you hit the legal age. Dr. Andrew Miller from Oxford University explained to BBC News, “This idea of drawing a clear line between childhood and adulthood is increasingly viewed as outdated. The transition is much more complex and unfolds over three decades.” So, if you enjoy unicorn-themed items, collect stickers, or still find humor in fart jokes, rest assured—it’s all part of your natural evolution.

This perspective is vital, as it highlights the arbitrary nature of societal definitions of what it means to be an adult. Dr. Miller notes, “Systems like education, health, and legal frameworks often create convenient classifications.” Even though turning 18 allows you to do many things legally (with the exception of drinking alcohol), it doesn’t necessarily reflect true maturity. Dr. Miller suggests that in the criminal justice system, for instance, experienced judges can distinguish between a legal-age teen and a more seasoned adult. “Society is beginning to adjust to this reality, even if we’re hesitant to acknowledge that transformation is gradual,” he adds.

The consensus is clear: there isn’t a definitive switch from childhood to adulthood. Instead, individuals progress along a continuum. This isn’t merely a philosophical musing from a single scholar; research shows that the brain’s rational areas aren’t fully developed until around age 25. It stands to reason that it takes a few more years for those adult cognitive patterns to fully take shape.

So, the next time someone suggests you need to grow up, remember that you’re developing at your own pace. Just because science indicates that adulthood officially begins in your 30s doesn’t mean you have to fully embrace it just yet. For more insights on this topic, you can explore one of our previous articles linked here.

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In summary, recent findings suggest that true adulthood may not be reached until our 30s, challenging traditional views that define maturity at 18. This nuanced view encourages a broader understanding of personal development, reminding us that growth is a gradual journey rather than a sudden shift.