“The Teen Brain: It’s Just Not Grown Up Yet” by Richard Knox

Neurologist Francis Jensen says the frontal lobes of the human brain are not fully connected until the mid 20’s-

“It’s the part of the brain that says: ‘Is this a good idea? What is the consequence of this action?’ ” Jensen says. “It’s not that they don’t have a frontal lobe. And they can use it. But they’re going to access it more slowly.”

Inside the Teenage Brain– PBS/Frontline

“The Aging Brain Is Less Quick, But More Shrewd” by Michelle Trudeau