Is there physical or psychological change after adolescence? What theories deal with such changes?

Absolutely, we see adults lose their hair, stature and height change, and so does our skin. Essentially as we age, are physique also changes, in turn.


The rational part of an adolescence brain isn't fully developed and won't be until age 25 or so. In fact, recent research has found that adult and teen brains work differently. Adults think with the prefrontal cortex, the brain's rational part. This is the part of the brain that responds to situations with good judgment and an awareness of long-term consequences. Teens process information with the amygdala. This is the emotional part. 

In teen’s brains, the connections between the emotional part of the brain and the decision-making center are still developing—and not always at the same rate. This is what leads to psychological changes post-adolescence. That’s why when teens have overwhelming emotional input, they can’t explain later what they were thinking. They weren’t thinking as much as they were feeling.


Many are dedicated to behavioral changes. According to the social learning theory, behavioral change is determined by environmental, personal, and behavioral elements. Each factor affects each of the others.