Some people reach full maturity sooner than others. The human brain reaches full maturity in early to mid 20s. The part of the brain that is associated with impulse control/understanding of personal external impact is one of the last parts to mature ( as I understand it - long time since I read up on this
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I realise there are young lads and lasses living very adult lives, and some of them may be fully adult at a very young age, but that doesn't mean a 22/23 year old isn't a young lad *smiles*
*goes on a google hunt*
Ah, here's something that talks about it:
Quote:
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According to recent findings, the human brain does not reach full maturity until at least the mid-20s. (See J. Giedd in References.) The specific changes that follow young adulthood are not yet well studied, but it is known that they involve increased myelination and continued adding and pruning of neurons. As a number of researchers have put it, "the rental car companies have it right." The brain isn't fully mature at 16, when we are allowed to drive, or at 18, when we are allowed to vote, or at 21, when we are allowed to drink, but closer to 25, when we are allowed to rent a car.
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http://hrweb.mit.edu/worklife/youngadult/brain.html
[eta] This is pretty interesting too:
Quote:
The prefrontal cortex, the part of the frontal lobes lying just behind the forehead, is often referred to as the “CEO of the brain.” This brain region is responsible for cognitive analysis and abstract thought, and the moderation of “correct” behavior in social situations. The prefrontal cortex takes in information from all of the senses and orchestrates thoughts and actions to achieve specific goals.1,2
The prefrontal cortex is one of the last regions of the brain to reach maturation. This delay may help to explain why some adolescents act the way they do. The so-called “executive functions” of the human prefrontal cortex include:
Focusing attention
Organizing thoughts and problem solving
Foreseeing and weighing possible consequences of behavior
Considering the future and making predictions
Forming strategies and planning
Ability to balance short-term rewards with long term goals
Shifting/adjusting behavior when situations change
Impulse control and delaying gratification
Modulation of intense emotions
Inhibiting inappropriate behavior and initiating appropriate behavior
Simultaneously considering multiple streams of information when faced with complex and challenging information
This brain region gives an individual the capacity to exercise “good judgment” when presented with difficult life situations. Brain research indicating that brain development is not complete until near the age of 25, refers specifically to the development of the prefrontal cortex.3
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http://www.hhs.gov/opa/familylife/te...rontal_cortex/
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