Teenage Brain Development
Risk-Taking and Decision-Making
The "Glitch" in the System
The Night Owl
The "H" Word
100

This part of the brain, responsible for decision-making and impulse control, is not fully developed until the mid-20s.

The prefrontal cortex

100

Teens take more risks not because they underestimate dangers but because they value this more than adults do.

Reward

100

This "R-word" describes the brain's ability to bounce back from difficult situations, a skill that is heavily developed during the adolescent years.

Resilience

100

This hormone makes you feel sleepy, but in teens, it is released about two hours later than in adults.

Melatonin

100

These chemical messengers are responsible for the sudden growth spurts and skin changes during puberty.

Hormones

200

This brain chemical, which increases during adolescence, is responsible for the heightened reward-seeking behavior in teens. 

Dopamine

200

Studies show that teens take more risks when they are in the presence of these individuals.

Their peers / friends

200

Because the emotional brain matures before the logical brain, teenagers are statistically more likely to engage in these types of activities, which provide an instant thrill.

Risky / Impulsive behaviours

200

Scientists say teenagers actually need this many hours of sleep each night for peak brain function.

8 to 10 hours

200

This word describes the period of life when a child’s body matures into an adult's.

Puberty

300

This almond-shaped part of the brain is the "emotional alarm" and is hyper-active in teens, causing mood swings.

The Amygdala

300

Evolutionarily, teens take risks so they can learn to become this—meaning they can take care of themselves.

Independent

300

While a little bit of this helps you perform in a sports meet, chronic levels of it can actually shrink the memory-forming part of a teenager's brain (the Hippocampus).

Stress

300

This "internal clock" shifts during puberty, making teens want to stay up late and wake up late.

The Circadian Rhythm

300

Often called the "stress hormone," levels of this can skyrocket in teens during exams or social conflict.

Cortisol

400

This process strengthens the most-used neural connections while eliminating weaker ones, making the brain more efficient.

Synaptic pruning

400

This is the ability to understand and share the feelings of another, which develops significantly in the Sec 2 years.

Empathy

400

This is the scientific term for why teens feel emotions—both good and bad—much more intensely than adults or younger children.

Hyper-excitability (or Emotional Intensity)

400

Lack of sleep in teens is most likely to affect this specific skill needed for exams (and lessons).

Concentration (or Memory)

400

This is the pathway hormones use to travel slowly through the body. This means the effects are slower but longer-lasting. 

Bloodstream

500

The part of the brain involved in memory and learning, which develops stronger connections with the frontal areas during adolescence, is called this.

The hippocampus

500

This ability to resist an impulse, like looking at a flashing light in a lab test, is still developing in teens.

Response Inhibition

500

This term describes the brain's ability to change and adapt. While it's great for learning, it also makes the teen brain more vulnerable to forming bad habits or addictions.

Neuroplasticity

500

This two-word term describes the exhaustion students feel on Monday mornings caused by the massive shift in sleep schedules between school nights and the weekend.

Social Jetlag

500

This hormone, often called the "bonding chemical," increases significantly during puberty and makes teenagers highly sensitive to social acceptance, peer approval, and loneliness.

Oxytocin