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Why Teenagers Think Differently
- Arya Devanath
- Apr 22, 2025
- 4 min read
Updated: May 4, 2025
Written by Arya Devanath, Edited by Aliyah Bautista
They’re impulsive, emotional, and sometimes impossible to resist—even the teenager with this adolescent brain doesn’t know what’s coming next—but what if the teenage brain isn't broken, just under construction?
Meanwhile, an outsider may watch you slam that door in anger, have crazy mood swings, and make decisions you even said were horrendous to commit , but neuroscience claims that teenagers are actually undergoing a formidable transformation. Beneath the frequent eye rolls and the late-night screen time , is a brain processing and relaying information at lightning speed—the rapid rewiring determines crucial everyday processes about how this teenager will compose themselves in their lives moving further.
The Undeveloped Mastermind
A teenager’s brain undergoes growth and refinement during adolescence, with different regions maturing at different rates. You might have heard of the prefrontal cortex (PFC) and its tendency to only be fully developed by the age of 25. The PFC is responsible for executive function, governing cognition having to do with reasoning, rational decision making, inhibition, shifting. Unfortunately, for a brain region so complex and essential in our academic-rich society, it is one of the last regions in our brain to fully mature.
On the other hand, the limbic system—brain structures important for emotions and reward-seeking behaviors—involves structures like the amygdala (important for emotional processing and instinctual reactions) that mature earlier, leading to teens relying heavily on these regions. This is why they feel emotions more intensely, making reactions more dramatic, and why teens often process information with greater emotional intensity and less rational control compared to adults, as the neural connections between the prefrontal cortex and the amygdala are not fully formed.
Thrill-Seeker Mode: Cravings for excitement
Have you ever noticed how some people favor a certain dessert more or less compared to you? This is because of the chemical messenger in our brains called dopamine, primarily seen in the Substantia Nigra (Snr), Ventral Tegmental Area (VTA), Nucleus Accumbens (NA), etc. These regions come into play when teens encounter pleasurable stimuli, environmental cues trigger bursts of dopamine signaling, reinforcing learning and reward-seeking behaviors.
The prediction you have of how this specific dessert tastes before you taste it, is a fundamental key factor that fuels how you’re going to favor it in the future. For example, if the taste of that new cookie flavor is higher than anticipated, dopamine signaling would increase, prompting you to look forward to eating it again in the future. If the taste turns out to be lower than anticipated, dopamine signaling will decrease, prompting you to not spend your money on something you don’t enjoy.
It so happens that in teenagers, dopamine signaling is relatively higher than in adults. The density of dopamine receptors peak in areas responsible for reward and decision-making, such as the striatum and prefrontal cortex. This increase enhances the “wanting” instinct and fosters exploratory behaviors. This is why teens are prone to trying new, risky things to result in pleasurable sensations (also why teens are more easily convinced to buy drugs) and why we tend to spend our parents' money on that same cookie we liked last week.
The Influence Your Parents Are Afraid of
There’s always that one friend that your parents say not to hang out with, but you don’t listen. Our friends actually have an impact on our dopamine signaling in the adolescent brain, affecting behavior and decision making. There’s nothing wrong with wanting to seek approval and it isn’t your fault—we’re wired to seek peer approval and social connection which happens to activate the same dopamine-rich brain regions such as the VTA and NA. Studies have shown that when your friend is around, you’re more focused on the potential reward, therefore fueling your tendency to take risky behaviors. Your desire to be accepted might outweigh your rational decision making skills, causing you to do something that you wouldn’t normally do, like smoking a cigarette in front of the person you like.
And of course, the cruel world of social media further amplifies the influence of social cues. The likes, comments, and notifications are designed to trigger dopamine releases, constantly to bring you back, checking for more. Research shows that teenagers that send most of their time on social media developed higher sensitivity for social feedback because of changes within their striatum and PFC. This could manifest in positive changes, such as greater social awareness, and negative changes, such as constant comparison leading to lower self esteem. Your parents are also always behind your back about screen time because excessive amounts alter dopamine signaling and impairs your ability to focus on long-term goals.
So maybe next time, before fighting back to what they have to say—consider these negative effects and perhaps, find something healthier to make you feel happy.
References
Bwbieltz. (2023, December 14). Study shows habitual checking of social media may
impact young adolescents’ brain development. The University of North Carolina
at Chapel Hill.
Content - Health Encyclopedia - University of Rochester Medical Center. (n.d.). https://www.urmc.rochester.edu/Encyclopedia/content?ContentTypeID=1&Conten
Chein, J., Albert, D., O’Brien, L., Uckert, K., & Steinberg, L. (2010). Peers increase
adolescent risk taking by enhancing activity in the brain’s reward circuitry. Developmental Science, 14(2). https://doi.org/10.1111/j.1467-7687.2010.01035.x
Ernst, M., & Luciana, M. (2015). Neuroimaging of the dopamine/reward system in
adolescent drug use. CNS Spectrums, 20(4), 427–441.
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