Are Teenage Brains Really Different from Adult Brains?
Although your brain is full size by the time you are a teenager, your prefrontal cortex isn’t fully developed until your mid-twenties. The prefrontal cortex is responsible for higher brain functions, such as reasoning and good judgment.
Additionally, there is a specific region of the brain, called the amygdala,which is responsible for the person’s immediate reactions, including fear and aggressive behavior, and this region develops early. This explains some of the risky behavior of older teens, as their actions and decisions are guided more by the emotional and reactive amygdala and less by the thoughtful, logical prefrontal cortex.
Other changes in the brain during the teenage years include a big increase in the connections between the brain cells and in the effectiveness of the brain pathways. Also, the teen years is when nerve cells in the brain are developingmyelin, an insulating layer that helps the cells communicate better. All these changes are essential for the development of coordinated thought, action, and behavior.
These brain differences don’t mean that teenagers can’t make good decisions or tell the difference between right and wrong. It also doesn’t mean that they shouldn’t be held responsible for their actions. However, an awareness of these differences can help parents and teachers understand, anticipate, and manage the behavior of teens.
Adult Brain versus Teenage Brain
On the outside, the brain looks similar throughout one’s life. But some parts of the brain develop faster than others, especially in the early years. The parts that seek new thrills and exciting events develop faster than those parts that think through situations and avoid danger. Older teenagers are almost twice as likely to take risks than anyone else. As we grow older, and different parts of our brains develop, we tend to make safer choices rather than take risks.
Fact or Fiction??
Your brain gets smaller as you get older. This is true! As a person ages, hisbrain loses weight and shrinks a bit; however, only a few ounces are lost by age eighty, and most of that is water.