The tenth anniversary edition of this national bestseller goes beyond raging hormones and peer pressure to explain why adolescents act the way they do and what parents and teachers can do about it?and it’s now thoroughly revised and updated to address the issues facing kids today: social media, online bullying, prescription drug abuse, stress, and nutrition.Why Do They Act That Way? was the first book to explain the scientific, brain-based reasons behind teens’ impulsive behavior, lack of focus, self-consciousness, territoriality, fatigue, and their quickness to anger and take risks?to name just a few common teen problems. All these behaviors are linked to physical changes and growth in the adolescent brain. Ten years ago, there was no Facebook, Instagram, or Snapchat. Now every kid has a smartphone and a Twitter account. Award-winning psychologist Dr. David Walsh has now updated his 2004 classic with the most current research into the adolescent brain, and he’s also updated his guidance for parents and teens on navigating the new challenges of the 24/7 online world. With real-life stories and reassuring guidance, Walsh provides realistic solutions for dealing with everyday and major challenges. Sample dialogues help teens and parents talk civilly and constructively with one another; behavioral contracts and Parental Survival Kits provide practical advice for dealing with issues like curfews, disrespectful language and actions, and bullying. As a parent, psychologist, coach, and trusted expert, Dr. Walsh offers the best advice to help adolescents thrive and parents survive.