Teens are dramatic, irrational and scream for seemingly no reason. They do stupid things. And they have a deep need for both greater independence and tender loving care. You could say this about teens. And here’s why, after infancy, the brain’s most dramatic growth spurt occurs in adolescence, and that growth means things get a little muddled in a teen mind. Teen brains are also wired to seek reward, act out, and otherwise exhibit immaturity that will change when they become adults.