Today's teenagers grow up more . Researchers looked at 8 million over the 40 years. Today's teens are responsible teenagers from the 70s, 80s and . Today's 18-year- are like 15-year-olds used to be. Teenagers take risks than did before.
Today's teenagers take to do their parents did, like , working, driving, and renting their room. A professor said they have a, " life strategy". One for this is many teenagers live in the and not the " world". Another reason is parents do too things for children.