National Geographic : 2011 Oct
CRACKING JOKES IS PART OF the daily repartee between Deborah Kipp and her daughter, Anastassia. The 18-year-old considers her mom a role model, always there and never bossy. Neuroscientist B. J. Casey, known for her work on the adolescent brain, notes: "The last thing you want to tell your teenager is what to be interested in, because then they'll go as far from it as possible." And there's nothing wrong if the teenager questions the parent's beliefs. That's normal and healthy: It helps a teen develop a sense of identity.