“From countless studies of MRI scans of healthy adolescents and twentysomethings, we now know that the frontal lobe does not finish wiring up until sometime between the ages of twenty and thirty. What this means is that, in our twenties, the quick, hot, impulsive, pleasure-seeking, emotional brain is ready to go, while the slow, cool, rational, forward-thinking frontal lobe is still a work in progress.”
