What is a summary of the developmental changes that take place in early adulthood?
In cognitive development, experiences from early life are the foundation for judgement and decision making. Yet the frontal lobe continues to develop until the early 20s. Afterward, the young adult adjusts to utilizing and maximizing the newly developed cognitive powers.
frontal lobe ... judgment, planning, speaking, and moving muscles are localized. Brain growth in this area only reaches final development in the early 20s.