1. 10 things we all need to know about teenagers
Researchers define adolescence as the ages between but maturity and full development is not realized until years of age.
Sometimes teens and parents do NOT want to accept the reality because teens sure do LOOK mature!

2. 1. A critical period of development
The years between 11 and 19, adolescence is considered a critical time of development – and not just in outward appearances.
"The human brain continues to change throughout life, but there are huge leaps in development during adolescence." (Johns Hopkins University, 2009)
Just as a teen may go through awkward growth spurts, new cognitive skills and competencies may come in spurts all through teenage years. (Rowman and Littlefield, 2009.)
This period of development has
POWERFUL
impact on the rest of their life.  

3. 2. Blossoming Brain 1999 in Nature Neuroscience
Scientists used to think only infants have an overabundance of neuronal connections, which are "pruned" into a more efficient arrangement over the first three years of life. NEW brain imaging studies have discovered that a second burst of neuronal sprouting happens right before puberty, peaking at about age 11 for girls and 12 for boys.
The adolescent's life experiences – from reading Facebook pages to learning to drive – shape this new grey matter that eventually becomes ‘hardwired’ as their adult brain. There is no going back to ‘fix’ this.
The brain goes through a "use it or lose it" which means the neurons used most during adolescence get strengthened. Those that do not wither and do not reach healthy adult potentials.
The greatest structural reorganization of the brain continues until the age of 25! Especially decision making area.
1999 in Nature Neuroscience

4. 3. New THINKING skills
As brain matter increases, the teen brain becomes more interconnected and gains processing power. Adolescents start to have the computational and decision making skills of an adult –if given time, access to accurate information and opportunities to practice.  In the heat of the moment, teen decision-making can be overly influenced by emotions, because their brains rely more on the emotional seat of the brain than the more rational prefrontal cortex. The duality of adolescent competence can be very confusing for all involved. Sometimes teens do things, like punch a wall or drive too fast, when, if asked, they clearly know better.

5. 4. Tantrums!!??
Adolescent brains are focused on acquiring skills sets connected to
social behavior and abstract thought.
They must experiment – and sometimes they use their parents/teachers as guinea pigs. May view conflict as a type of self-expression and may have trouble focusing on an abstract idea or understanding another's point of view.
Helps all involved to realize, they are dealing with a huge amount of social, emotional and cognitive flux and have underdeveloped abilities to cope.
They need their parents – those people with the more stable adult brain – to help them by staying calm, listening and being good role models.

6. 5. Intense emotions
Puberty is the beginning of major changes in the part of the brain that are critical to the formation of memories and emotions.
The amygdala is most powerful segment of brain at this stage and connects sensory information to emotional responses. Its development often creates newly intense experiences of rage, fear, aggression, excitement and sexual attraction.
As years pass, the prefrontal cortex gains greater control which is associated with planning, impulse control and higher order thought but is not fully mature until mid-20’s.
Older teens gain some equilibrium and have an easier time interpreting others.
Until then, they often misread the intentions and feelings of others especially in facial expressions.

7. 6. Peer Pleasure
As teens become better at thinking abstractly, their social anxiety increases.
Newly developed abstract reasoning makes it possible to be overly concerned/sensitive about what others are thinking of them. In particular, peer approval has been shown to be highly rewarding to the teen brain, which may be why teens are more likely to take risks when peers are around.
Friends and peer interaction provide teens with opportunities to learn skills such as negotiating, compromise and group planning.

8. 7. Measuring risk
The “brakes of reason and caution” gain control somewhat later than the accelerator or “gas pedal” of the brain.
engaging in risky behaviors, such as trying drugs, having sex, getting into fights, stealing or driving unsafely.
impulse control and long-term perspective taking is thought to begin helping them reign in some of the behavior they were tempted by earlier.

9. 8. Adult role models are still important
One of the tasks of adolescence is separating from the family and establishing some autonomy, but that does not mean a teen no longer needs parents.
They still need structure and are looking to their parents to provide that structure. Adults that treat a 16 or 17 year old as an adult is behaving unfairly and setting them up for failure.  
Teens need adults to be good listeners, good role models, especially when dealing with stress and other life difficulties.

10. 9. Need more SLEEP…
They need 9 to 10 hours a night, although most fall short.
Circadian rhythms
Teens rack up sleep debt and become increasingly cognitively impaired as the week continues and need weekends to ‘catch-up.’
Sleep-deprivation exacerbates moodiness and cloudy decision-making and can make learning more difficult.

11. Teen brains begin asking:
10. A false sense of self-value “I am the center of the universe” syndrome
“I am far more mature than everyone else or than others think I am. So I am fully capable of acting and behaving like an adult!”
Teen brains begin asking:
What kind of person do I want to be and what do I want to be in the world?

12. Teenage brain