In adolescence, brain development is characterized by dramatic changes to the brains structure, neuron connectivity (i.e., wiring), and physiology. These changes in the brain affect everything from emerging sexuality to emotionality and judgment.
Not all parts of the adolescent brain mature at the same time, which may put an adolescent at a disadvantage in certain situations. For example, the limbic areas of the brain mature earlier than the frontal lobes. The limbic areas regulate emotions and are associated with an adolescents lowered sensitivity to risk. The frontal lobes are responsible for self-regulation, judgment, reasoning, problem-solving, and impulse control. Differences in maturation among parts of the brain can result in impulsive decisions or actions and a disregard for consequences.