It wasn't enough to just to unveil the Alfa Romeo Giulia Quadrifoglio with the bit of disorganization that can come with debuts in Italy. They also trotted out famed tenor Andrea Bocelli, who sang Nessun Dorma from Giacomo Puccini's Turandot.
A growing body of science says, no. That critical parts of the brain involved in decision-making are not fully developed until years later at age 25 or so. In a moment, we'll hear about how child advocates are hoping to use this research to change the laws about their foster care.
Between the ages of 10 and 25, the brain undergoes changes that have important implications for behavior (see Cognitive development below). The brain reaches 90% of its adult size by the time a person is six years of age. Thus, the brain does not grow in size much during adolescence.