Adolescence lasts into 30s.

[Fiatless]

Sometimes I wonder why some adults still behave like adolescents. They suffer from mood swings, peer pressure, rebellious behavior, and so on. A new study from the University of Cambridge showed that the brain stays in the adolescent phase until our early thirties.

The study came up with a new five-brain phases, which are;

Childhood - from birth to age nine
Adolescence - from nine to 32
Adulthood - from 32 to 66
Early ageing - from 66 to 83
Late ageing - from 83 onwards

Before now, it was believed that adolescence was confined to the teenage years, but this new research suggests that it continued into the early 30s. Maybe this might be why some adults act like adolescents.

https://www.bbc.com/news/articles/cgl6klez226o

[Findingnemo]

As per the WHO, a person ages from 10 to 19 is an adolescent. It can last to 30? Possibly but I am the opposite, I started to feel like a old soul even since my early 20s. I got the feeling of what is the entertainment with hanging out for nothing unless we have something get in as return.

Maybe need another research to find old soul trapped in the young body.

[BADecker]

Jesus didn't start His ministry until He was about 30.

[franky1]

your technically an adult at 18, and a juvenile is technically people that are teenage but not yet 18
adolescence is the social term for the transition from juvenile to adulthood(emotionally not numerically). which can vary between each person based on their actions, and emotions and development
legally an adult with severe mental development issues can be treated as a juvenile/child(social care, medical and criminal)
legally a juvenile with maturity can be treated as an adult(crimes and emancipation)

the legal defining age of adulthood has nothing to do with being at a fully developed level of maturity/emotionally/developmentally

even in the nightclub/party scene there is a level/stage called 'club 18-30' which is the age range of people that are usually single, less responsible and just want to have fun without any long term responsibility (basically desiring one night stands)

yes when people get passed this stage people want to settle down and have their own home/family. which shows another level of maturity
but this is not to say that the 18-30 stage is part of "adolescence" its actually a different stage to adolescence and not part of mature adult

an 18yo is not the same as a 30yo.. but a 30yo is not the same as a 55yo.. and a 55yo is not the same as a 90yo

no one suddenly becomes mature at 18 that plateau's until they die of old age

basically: adulthood is not a single stage of maturity

[Dunamisx]

Sometimes I wonder why some adults still behave like adolescents. They suffer from mood swings, peer pressure, rebellious behavior, and so on. A new study from the University of Cambridge showed that the brain stays in the adolescent phase until our early thirties.

Honestly i never thought that this could extend to early thirty for adolescent stage, anyway, this does not matter much, maturity, determination and ambition that we all follow after each other matters a lot, because sometimes everything is not by age, as you can see an older man behavior like a child and the same applicable to a child behaving like an adult, there is individual behavioral disparity on this, as everything is not by age or how far, but how well.

[Sim_card]

Sometimes I wonder why some adults still behave like adolescents. They suffer from mood swings, peer pressure, rebellious behavior, and so on. A new study from the University of Cambridge showed that the brain stays in the adolescent phase until our early thirties.

Honestly i never thought that this could extend to early thirty for adolescent stage, anyway, this does not matter much, maturity, determination and ambition that we all follow after each other matters a lot, because sometimes everything is not by age, as you can see an older man behavior like a child and the same applicable to a child behaving like an adult, there is individual behavioral disparity on this, as everything is not by age or how far, but how well.

I agree with you. Age is only a number and not wisdom. I have seen several married men of early 40s still act like teenagers. They wouldn't stop doing those things that they did when they were teenagers. They're easily influenced and carried away by the society vices. However, it all boils down to the individual.

[franky1]

I agree with you. Age is only a number and not wisdom. I have seen several married men of early 40s still act like teenagers. They wouldn't stop doing those things that they did when they were teenagers. They're easily influenced and carried away by the society vices. However, it all boils down to the individual.

i would not consider a married 40yo an adolescent if he was doing 'teenage things' such as riding a skateboard and drinking slushies.. what i would consider a 20-40  impact to maturity/adolescence is if someone was, unmarried, childless, still living with parents, dependant on parents income/resources
the whole 'failure to launch' 'failure to leave the nest' keeps someone in that immature dependant on parents adolescent state of acting like a child and avoiding the life responsibility of adulthood

there are certain milestones/expectations of life where by people gain new experiences of how to handle themselves and how they interact with others. from getting a job, getting your own home, starting a family, promoted at work to a responsible position.. these all lead to character building

learning to be independent and responsible first for yourself and then your own family comes with its own maturity milestones/realisations

[Sticky Bomb]

there are certain milestones/expectations of life where by people gain new experiences of how to handle themselves and how they interact with others. from getting a job, getting your own home, starting a family, promoted at work to a responsible position.. these all lead to character building

learning to be independent and responsible first for yourself and then your own family comes with its own maturity milestones/realisations

These are where my contributions centers on. What turns a Teenager or even a child into and adult is responsibilities and exposure, it doesn't just happen out of the blue. There are 32 year old's that are still heavily dependent on their parents for livelihood and are neither exposed nor action minded to take responsibility of themselves.

This has something to do with upbringing too, if parents are so protective of their children and don't give them chance to take up some responsibilities from young, they don't develop the mentality of independence and emotional maturity. I have a cousin that is 33, but upbringing has made him remain a child still and he's getting the brunt of it. He is even older than me but addresses me with so much respect

On the other hand, A boy that I met at a local church was always misbehaving, begging people for money and data and everyone saw him as childish and didn't want to associate much with him. I loved his energy and wished to give him some exposure and experience. We found a job for him at a diagnostics center close to the church where he would start earning if he worked hard and he was placed on probation as a receptionist(he was supposed to learn the processes, computer literacy e.t.c). The boy was determined to make money for himself, he quickly familiarized himself with the processes within a month, got converted to a staff and started earning from there.

As I'm typing this barely 4 months later, the boy now acts like an adult and coordinates most of the activities in any group he finds himself in the church. The simple exposure and responsibility handed over to him is reconfiguring his brain from a directionless child to a responsible adult, and he is only 17. His contributions to discussions now have improved  and he now appears very neat and smart. To wrap it up, people are beginning to respect him

[passwordnow]

I think it's simply that because those who are from the age of 30 are enjoying their childhood because there's no requirement for that. If they act as adolescents, there's no law that stops them from doing so. This is why it is applied about being adult and yet, child at heart. We're on that period and I guess once a person goes to that age, we don't want to feel old by doing those things we've been doing when we're teens.

[Odusko]

This reminds me about a popular zee world phrase, that says, age is just a number, relating that to this thread, adolescence and adulthood may have age specification like Friday n 10-19 years of age depending, but what make a person separate from those two age levels is the actions and the mental development of such a person, you see someone in their early 20s behaving mature whereas you see an adult in their 30s acting like kid's, this make a lot of connections as for what, how they are developed and brought up.

[goldkingcoiner]

Sometimes I wonder why some adults still behave like adolescents. They suffer from mood swings, peer pressure, rebellious behavior, and so on. A new study from the University of Cambridge showed that the brain stays in the adolescent phase until our early thirties.

The study came up with a new five-brain phases, which are;

Childhood - from birth to age nine
Adolescence - from nine to 32
Adulthood - from 32 to 66
Early ageing - from 66 to 83
Late ageing - from 83 onwards

Before now, it was believed that adolescence was confined to the teenage years, but this new research suggests that it continued into the early 30s. Maybe this might be why some adults act like adolescents.

https://www.bbc.com/news/articles/cgl6klez226o

Some people never grow up.

But it is not their fault. We all have to go through traumas in life.
Some people just never recover or get the help they need to overcome those traumatic experiences.

[Agbamoni]

Adolescence can vary from person to person. I am the opposite because I started showing maturity at the age of 15, before 2020, I take full responsibility for not just myself but my family and many other persons around me. I'm surprised how I was able to make certain decisions at some point because, come to think of it, it takes a strong and mature mind to have done something I did when I was growing up.

Life can also be a reason why young people get through adolescence at a faster rate.

[Hewlet]

Before now, it was believed that adolescence was confined to the teenage years, but this new research suggests that it continued into the early 30s. Maybe this might be why some adults act like adolescents.

As long as biologically, you're matured and well developed, what's left is maturity and that's a function of gene and the kind environment you grow up in which either helps you mature quickly or delayed the process of becoming a married adult.

There are some that as low as 20 years, they've already developed an high level of Maturity and emotional strength that's above what others can't get to even at the age of 25. That's why we have some 23 years old guys looking and behaving more matured than those that are above 30. Gene, environment and how smart the child is jointly contribute to how becomes an adult faster than another.

[BADecker]

People mature at different ages and stages in life. The adolescence age is simply a judgmntal thing that seems to be the average across the society.

Personally, I think that one finally matures the moment before he dies.

[Samlucky O]

Sometimes I wonder why some adults still behave like adolescents. They suffer from mood swings, peer pressure, rebellious behavior, and so on. A new study from the University of Cambridge showed that the brain stays in the adolescent phase until our early thirties.

Mode swings, pear pressure and rebellious behavior has nothing to do with age. Sometimes adult behave like children while  adolescent behave like adults sometime.  In most case our character is determined by the environment we find ourselves. When you grow up in an environment that has such behavior, you are likely to behave like them because they will surely influence you. That's why you see some people behave matured and others behave childish because of the environment they grew up. An adolescent that grew up with an old person, will definitely behave more mature than those who grew up with only children without no elderly person.

The study came up with a new five-brain phases, which are;

Childhood - from birth to age nine
Adolescence - from nine to 32
Adulthood - from 32 to 66
Early ageing - from 66 to 83
Late ageing - from 83 onwards

I disagree with this explanation, I see that maturity is not determine by age, it is determined by when you have become responsible to take care of your responsibilities. Because by then you will limit from some certain behavior. And it could be around 20-25 years or even 28years and not necessarily 32 and above. Because even some people around 40 years are still behaving like adolescent.

[Accardo]

Maturity is of thousand fold, people mature differently, some do well in one side of their habit and lack on another angle. When an 18 year old is in the hands of people who wants him to play mature at early 20s the fellow would begin to adopt to things like running a business, marriage, investments etc. They may no longer be free to play with peers or undergo its pressure, as their life has been channelled for a lifelong journey by the guardians or parents. Things this ward would know and practice at that early 20s may never get known to matured people in their 30s. It's just about environment and growth.

[Fiatless]

Mode swings, pear pressure and rebellious behavior has nothing to do with age. Sometimes adult behave like children while  adolescent behave like adults sometime.  In most case our character is determined by the environment we find ourselves. When you grow up in an environment that has such behavior, you are likely to behave like them because they will surely influence you. That's why you see some people behave matured and others behave childish because of the environment they grew up. An adolescent that grew up with an old person, will definitely behave more mature than those who grew up with only children without no elderly person.

Why can't you do a little search on the behavior of adolescent. Atleast you would discover that effect of hormonal change and brain development on teenagers. At what age do you think peer influence affects people the most? The environment has more of an effect on teenagers than on adults.

I disagree with this explanation, I see that maturity is not determine by age, it is determined by when you have become responsible to take care of your responsibilities. Because by then you will limit from some certain behavior. And it could be around 20-25 years or even 28years and not necessarily 32 and above. Because even some people around 40 years are still behaving like adolescent.

What are you dissatisfied with? A researcher came up with their findings, and you said you disagree. The only way to prove them wrong is to conduct your own research or present research with contrary findings.

[9ja Amaka]

As per the WHO, a person ages from 10 to 19 is an adolescent. It can last to 30? Possibly but I am the opposite, I started to feel like a old soul even since my early 20s. I got the feeling of what is the entertainment with hanging out for nothing unless we have something get in as return.

Maybe need another research to find old soul trapped in the young body.

Yeah I get what you mean because not everyone finishes growing mentally in their teens. Some don’t fully mature until their late 20s or even 30s. Everyone’s pace is different. Your experience of being the opposite is valid, cause some people actually mature way earlier than expected.
And same here , when I was a teenager I already thought deeply and took life seriously. I wasn’t acting like a teen at all. So I totally agree with you. Some of us just naturally grow up faster and it shows on how we think and handle things.

[Findingnemo]

As per the WHO, a person ages from 10 to 19 is an adolescent. It can last to 30? Possibly but I am the opposite, I started to feel like a old soul even since my early 20s. I got the feeling of what is the entertainment with hanging out for nothing unless we have something get in as return.

Maybe need another research to find old soul trapped in the young body.

Yeah I get what you mean because not everyone finishes growing mentally in their teens. Some don’t fully mature until their late 20s or even 30s. Everyone’s pace is different. Your experience of being the opposite is valid, cause some people actually mature way earlier than expected.
And same here , when I was a teenager I already thought deeply and took life seriously. I wasn’t acting like a teen at all. So I totally agree with you. Some of us just naturally grow up faster and it shows on how we think and handle things.

I guess the circumstances where we live is what decide how our mindsets get shaped into while we are growing. Let's say if a kid os growing in a family the demostic violence is happening then the kid can't feel the normal childhood and most likely will turn into an adult when they are like 20 years old and not to repeat what they saw while growing up...

[Hispo]

That pretty much goes completely contrary to what common sense and social age boundaries have taught us during decades in our country, at least in the west.
I don't think I am an a teen, even though I am prone to mood swings and change in my behavior, I think it is mostly because of personal things which have little to do with the way my brain functions.

I would only start to consider this information as true if more universities step forward and provide similar findings to the Public. It would not make much sense to blindly trust a single university, those studies are supposed to be cross-examined and verified by several institutions worldwide.