| colleenag |
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| Jokers Pro |
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| Reged: 12/28/13 |
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| Loc: New Hampshire |
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 Here is the science regarding brain development: I think it helps define why Drew seems immature...
09/27/26 10:13 AM
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he Brain Region That Finishes Developing in the Mid‑20s
The prefrontal cortex is the part of the brain that is not fully formed until around age 25
scienceinsights.org
scienceinsights.org
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Location and Role
The prefrontal cortex (PFC) sits at the very front of the brain, just behind your forehead, within the frontal lobe
Cleveland Clinic
Cleveland Clinic
. It is often called the brain’s “executive suite” because it governs executive functions such as:
Planning and problem‑solving
Impulse control and self‑regulation
Decision‑making and risk assessment
Emotional regulation
Working memory and goal‑directed behavior
scienceinsights.org
scienceinsights.org
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Why It Takes Until the Mid‑20s
While the brain’s overall size is mostly reached by early adolescence, the PFC continues to refine its neural connections well into the mid‑20s
scienceinsights.org
scienceinsights.org
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. This is due to two key processes:
Synaptic pruning – removing unused connections to make neural circuits more efficient.
Myelination – coating nerve fibers in a fatty sheath to speed up signal transmission
scienceinsights.org
scienceinsights.org
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These processes allow the PFC to mature in complexity and function, enabling more mature, controlled, and strategic thinking.
Why It Matters
Because the PFC is the last major brain region to fully mature, adolescents and young adults often experience:
Greater impulsivity
More risk‑taking
Less ability to weigh long‑term consequences
biologyinsights.com
biologyinsights.com
As the PFC finishes developing in the mid‑20s, these “braking” systems strengthen, balancing the earlier‑maturing emotional and reward‑driven brain regions
biologyinsights.com
biologyinsights.com
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In short: The prefrontal cortex is the brain area that is not fully formed until about age 25, and its maturation is critical for responsible decision‑making, self‑control, and complex planning
scienceinsights.org
scienceinsights.org
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https://www.bing.com/search?pglt=41&q=what+part+of+the+brain+is+not+fully+formed+until+mid+20%27s%3F&cvid=a9ad82e9f50f42cca82356ef4d6a69f3&gs_lcrp=EgRlZGdlKgYIABBFGDkyBggAEEUYOTIICAEQ6QcY_FUyBwgCEOsHGEDSAQkxNjIyMmowajeoAgCwAgA&FORM=ANNAB1&PC=LCTS
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